Piratelogic shared a link.
I want to come over and give the Grown Ups a serious listen...
Updated Oct 19, 2023 7:22:07am
Oct 19, 2023 7:22:07am
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We're taking a break for the next 5 weeks trying to focus away from chips, 0805, 0603, SOP8, SOT23, clingon's and starbasses visiting wonderfull Thailand to meet my oldest son parents in law, travel at least 2000 mile, sample local cuisine, attend a marriage and see temples while thinking it's way too hot in here and will be back for business from 15 august onwards. Happy Holidays to you all !
We're taking a break for the next 5 weeks trying to focus away from chips, 0805, 0603, SOP8, SOT23, clingon's and starbasses visiting wonderfull Thailand to meet my oldest son parents in law, travel at least 2000 mile, sample local cuisine, attend a marriage and see temples while thinking it's way too hot in here and will be back for business from 15 august onwards. Happy Holidays to you all !
Jul 04, 2023 10:34:25am
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With the 2020 TPA3255 based BMH3D module prototype thermal problems fixed work started on the 2023 version and am happy to announce that after extensive testing including late night listening sessions the first 2023 version is here and altough still in it's prototype phase did receive some notable improvements over the 2020 design among which are the increased VDD buffercapacity and the usage of larger reconstruction filter inductors. A batch of five has been ordered which will be tested mid august after our holiday break. https://piratelogic.nl/?p=en.blog
With the 2020 TPA3255 based BMH3D module prototype thermal problems fixed work started on the 2023 version and am happy to announce that after extensive testing including late night listening sessions the first 2023 version is here and altough still in it's prototype phase did receive some notable improvements over the 2020 design among which are the increased VDD buffercapacity and the usage of larger reconstruction filter inductors.

A batch of five has been ordered which will be tested mid august after our holiday break.

https://piratelogic.nl/?p=en.blog
Jun 20, 2023 2:15:50pm
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With the last tpa3255 based BMH3D proto nearing completion work has started on a production version. Front-panel form factor is with 100 x 100 mm similar to the current 3116 based version as currently being used in the Grown/Up enclosure however it's depth is 50 mm (3116 version : 30 mm) due to the use of larger capacitors and output coils. - 20dB motional feedback loop supporting both StarBass as ClingOn accelerometers. - The 3255 is set into 2.1 mixed mode with 1x BTL bass and 2x SE mide/high channels. - RMS power output 155W @ 8ohm, 255W @ 4ohms woofer channel, 35W @ 8ohm, 77W @ 4ohm mid and high channel. - External single 51V powersupply via XT30 connector. - Fixed analog sallenkey based 2nd order LR low/mid xover at 400hz, 4th order LR mid/high xover at 4Khz. - Symmetric mini XLR input and thru, maximum sensitivity -6dBu 330mV adjustable from the back. 3 individual class D channels, 2x amplification - 2.4 watt standby power consumption, automatic power on/off. - connection to drivers via 8pole microFIT connector, optional status led via 2 pole 2.54mm JST.
With the last tpa3255 based BMH3D proto nearing completion work has started on a production version. Front-panel form factor is with 100 x 100 mm similar to the current 3116 based version as currently being used in the Grown/Up enclosure however it's depth is 50 mm (3116 version : 30 mm) due to the use of larger capacitors and output coils.

- 20dB motional feedback loop supporting both StarBass as ClingOn accelerometers.
- The 3255 is set into 2.1 mixed mode with 1x BTL bass and 2x SE mide/high channels.
- RMS power output 155W @ 8ohm, 255W @ 4ohms woofer channel, 35W @ 8ohm, 77W @ 4ohm mid and high channel.
- External single 51V powersupply via XT30 connector.
- Fixed analog sallenkey based 2nd order LR low/mid xover at 400hz, 4th order LR mid/high xover at 4Khz.
- Symmetric mini XLR input and thru, maximum sensitivity -6dBu 330mV adjustable from the back.
3 individual class D channels, 2x amplification
- 2.4 watt standby power consumption, automatic power on/off.
- connection to drivers via 8pole microFIT connector, optional status led via 2 pole 2.54mm JST.
Jun 15, 2023 12:11:05pm
Piratelogic shared a link.
To keep up to date visit our blog.
Updated Jun 02, 2023 12:08:33pm
Jun 02, 2023 12:08:33pm
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The electronics for the Grown/Up successor prototype is taking shape 😎
The electronics for the Grown/Up successor prototype is taking shape 😎
May 28, 2023 9:11:17pm
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6mm CnC'ed cooling sandwich with cutouts for trimpots and connectors
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Placement between PCB and frontplate
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tight fit
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With ventilation slots for natural convection
Tested the 2020 version of the tpa3255 based Grown/Up BMH3D amplifier module with the newly developed cooling solution. Caps, coils and heat sink remain well under 40 C with Vd 48V and rated power @ 8 ohms. Looking forward pairing it with the upcoming 12" and 15" equipped 3 way systems 😎
May 20, 2023 1:37:33pm
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https://www.ti.com/product/TPA3255
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High power in the same 80x100 mm formfactor.
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15 inch drivers
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3 way with audax pr170 mid and JBL tweet.
Did a tpa3255 version of my BMH3D Grown/Up 3 way module back in 2020 which got halted due to thermal issues, the tpa3116 cooling solution clearly didn't suffice for the 3255 hothead. Luckily I've found someone in my network with experience milling 6 mm aluminium so we're back in business

Can't wait to start building this 3 way design 😎
May 15, 2023 11:58:55am
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1 inch AD0161T4, one of Philips first dome tweeters. Hooked up a pair to get a feel for possible Xover choices, looks fine 3Khz up. Green #1, yellow #2, looks like Philips did a pretty good job at maintaining product tolerances. 1973. Wow.
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7 inch AD7063M4S, whizzer cone equipped full range. Midrange candidate between 500~3K. Might remove the whizzer to get rid of the obvious breakup and let the AD0161 take over.
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8 inch AD8066W4 woofer, pretty straight line between 80~500hz. Philips used them in 2 way systems upto 1K5.
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Original 22RH544 motional feedback enclosure, 1974. Best seller at the time. Image is here to show the bracket mounted tweeter which I will copy in my test enclosure.
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CnC drawing for the test enclosure, 4 pieces of AD8066 with a center mounted AD7063 and a bracket mounted AD0161 in front of the top left (left model) and right (right model) woofer. Powered by a Grown/Up BMH3D amplifier module.
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Qbox sits a little above 1 because of the AD7063 compartment which should work fine with 12dB servo loop gain.
Doing some research into "acoustic radiation impedance", see https://testhifi.com/2019/02/11/acoustic-radiation-impedance/ for more details, in relation to my plans for a prosound servo system. Next to the obvious choice for larger drivers I'm also looking into pairing smaller drivers in parallel using some vintage drivers I have laying around. Good old Philips, miss you 🥹
Apr 20, 2023 1:43:08pm
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The Little/One woofers are located on the sides in an impuls compensated setup to keep their operating axis perpendicular to the planar and thereby avoiding woofer vibrations from modulating the planar output
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It's a prototype so no attention was payed to cosmetics including usage of audiophile cabling :-)
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The same 3 way module was used as found in my Grown/Up series.
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The left woofer, shares it's Vbox with the right woofer.
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Rounded edges to minimize baffle diffraction, one of the planned measurments is to determine the influence of the rounded planar supports but initial listening doesn't reveal any irregularities yet.
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@[1160178016:2048:Joppe Peelen] his d'Apolito unit appears to integrate nicely with it's side firing servo woofers.
Next to building the next batch of 20 Grown/Up's I've been working on this, my first SAOB (servo assisted open baffle) prototype, sporting a magnetostatic mid/high unit build by Joppe Peelen paired with two impuls compensated little/one servo woofers.

The prototype measures H44, W22 and D20 cm, is powered by the same Piratelogic BMH3D 3 way module as being used with my Grown/Up enclosures. Xovers sit at a 2nd order @ 400hz and 4rd order @ 4Khz. First listening tests reveal a true open baffle character but without the dimensions that normally accompany a f3 of 40hz.
Apr 11, 2023 9:46:39am
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Got some mail the other day, although I love the fact that there is an ever increasing number of people starting attempts at building servo enclosures I do feel there's a need for bit of warning here: "Hi there, I've managed to gather some nice drivers to make some speakers and the idea of implementing your servo circuit / accelerometer in a project is always lingering in the back of my head. The one I first want to start with is a mid size three way with Accuton drivers." Designing & building servo drive systems requires a thorough understanding of and working experience with the underlying electronics. An engineering degree and experience with component level board repair is strongly advised. Hence my advise not to start your servo journey with expensive drivers but use some budget drivers to experiment on first !!!!!!!!!!!!!!! https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2020.0.manual.en.pdf
Got some mail the other day, although I love the fact that there is an ever increasing number of people starting attempts at building servo enclosures I do feel there's a need for bit of warning here:

"Hi there, I've managed to gather some nice drivers to make some speakers and the idea of implementing your servo circuit / accelerometer in a project is always lingering in the back of my head. The one I first want to start with is a mid size three way with Accuton drivers."

Designing & building servo drive systems requires a thorough understanding of and working experience with the underlying electronics. An engineering degree and experience with component level board repair is strongly advised.

Hence my advise not to start your servo journey with expensive drivers but use some budget drivers to experiment on first !!!!!!!!!!!!!!!

https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2020.0.manual.en.pdf
Mar 08, 2023 11:31:09am
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24V, 400watt budget LED powersupply connected to a pair of Grown/Ups
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DC ripple
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2Mhz spectrum sweep, the 74khz switching freq is 61dB down with harmonics down -90dB @ 600khz.
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25Mhz spectrum sweep
Testing a budget LED power supply with a pair of BMH3D equipped Grown/Up enclosures with my newly acquired Pico Technology 2205A scope. The 24V dc noise figure remains well below 40mV in both standby as well as operating mode. Turning up the volume with the new bass worthy Skrillex tunes rises the Grown/Up current consumption to ~8A @ 24V and increases the supply ripple to 38mV. -60dB switching suppression at 75Khz.
Mar 01, 2023 12:39:55pm
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Interesting driver, wondering what it looks like under the dustcap ... :-)
Feb 27, 2023 9:06:26am
Piratelogic shared a link.
Just received word from @[1160178016:2048:Joppe Peelen] that my planars (the ones on top) are nearing completion, can't wait 😎
Updated Dec 12, 2022 10:36:14pm
Dec 12, 2022 7:25:22pm
Amazing driver technology, magnetostats, sometimes referred to as 'planars' as well. Those looking for natural sounding pianos, guitars and brass reproductions should *really* give them a try. Attached clip is from Dag Wallander (thanks 😎) whom's mod makes me wonder if I should proto a Little/One planar as well...
Amazing driver technology, magnetostats, sometimes referred to as 'planars' as well. Those looking for natural sounding pianos, guitars and brass reproductions should *really* give them a try. Attached clip is from Dag Wallander (thanks 😎) whom's mod makes me wonder if I should proto a Little/One planar as well...
Dec 08, 2022 7:47:52am
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Mylar foils
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Neodymium motors
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Even without any tuning the FR looks very promising.
Extremely excited about the planar mid-high drivers Joppe Peelen is working on as a replacement for the standard coaxial in a custom Grown/Up enclosure.
Dec 06, 2022 7:37:04pm
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top layer, 80x100 mm
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bottom layer
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schematics
Using lessons learned from earlier builds this 3rd build of the 3way motional feedback BMH3D module is nearing completion. Fully analog Sallen Key filters, 70, 35 and 15 watts high efficiency class D amplification, 20dB StarBass servo loop, balanced miniXLR input. In a pick & place optimized mass production ready design. The basis for the Servolabs.nl Grown/Up and upcoming First/Love enclosures.
Nov 30, 2022 10:29:04am
Piratelogic shared a post.
We've started a new dev cycle based upon 12" low, 5.25" mid and 1" high drivers.
Updated Nov 08, 2022 8:55:50am
Nov 08, 2022 8:55:50am
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Grown/Up 08S5 bass driver & accompanying bmh3d amplifier module.
Oct 26, 2022 5:31:31pm
Piratelogic shared a post.
For our Dutch fans...
Updated Oct 01, 2022 10:42:25pm
Oct 01, 2022 10:42:25pm
Piratelogic shared a post.
Updated Sep 29, 2022 1:20:25pm
Sep 29, 2022 1:20:25pm
Mobile uploads
Mobile uploads
Mobile uploads
Mobile uploads
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Testing the newly developed Servo/Sub modules with a customer his TangBand drivers equipped with a StarBass V accelerometer. First results are promising, 40hz D3 is 20dB down, -3dB points at 27 and 300hz.
Sep 19, 2022 4:36:35pm
Piratelogic shared a post.
Updated Sep 19, 2022 9:29:50am
Sep 19, 2022 9:29:50am
Mobile uploads
Ready for the zba group meet tomorrow (https://zelfbouwaudio.nl/forum/viewtopic.php?t=30739)
Ready for the zba group meet tomorrow (https://zelfbouwaudio.nl/forum/viewtopic.php?t=30739)
Sep 09, 2022 4:19:53pm
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With Grown/Up and Little/One parts requiring an ever increasing amount of shelfspace the time has come to clear out some of the old enclosures & drivers which have been gathering dust for too long. Think old woofers (some modded with an accelerometer) mids and tweeters and some of the early mfb enclosures & modules, for those interested, keep an eye on the @[378363822613721:69:Motional Feedback Loudspeakers] sales group. Myself I will be using 4 x XLS10, 2 x L8S800 and 2 x SA8535 leftovers as a basis for a hobby project designed around grown up little one's finding their first love 😍 Have a great weekend you all !
With Grown/Up and Little/One parts requiring an ever increasing amount of shelfspace the time has come to clear out some of the old enclosures & drivers which have been gathering dust for too long. Think old woofers (some modded with an accelerometer) mids and tweeters and some of the early mfb enclosures & modules, for those interested, keep an eye on the Motional Feedback Loudspeakers sales group.

Myself I will be using 4 x XLS10, 2 x L8S800 and 2 x SA8535 leftovers as a basis for a hobby project designed around grown up little one's finding their first love 😍

Have a great weekend you all !
Aug 26, 2022 1:02:24pm
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In the process of adding images to the piratelogic driver page starting with the 08S5 which is used in our Grown/Up and upcoming Servo/Sub enclosures. See https://piratelogic.nl/?p=en.drivers, click the highlighted link below ...
In the process of adding images to the piratelogic driver page starting with the 08S5 which is used in our Grown/Up and upcoming Servo/Sub enclosures.

See https://piratelogic.nl/?p=en.drivers, click the highlighted link below ...
Jul 14, 2022 1:49:44pm
"I would like to test your little/one mk2 with an air motion transformer, can you help by making the tweeter connection available from outside ?"

Sure, no problem 😎
Jul 05, 2022 6:01:41pm
Mobile uploads
We've been silent because there was some major catching up to do with getting delayed parts into postponed deliveries and although still not fully out of the woodworks things are clearing up. Despite economic turbulence our sales numbers are still up resulting in our test rig showing growth beyond domestic proportions, time to start looking for some real demo space. The long awaited LS3/mfb subs are now scheduled for Xmas 2022, sorry for the delay.
We've been silent because there was some major catching up to do with getting delayed parts into postponed deliveries and although still not fully out of the woodworks things are clearing up. Despite economic turbulence our sales numbers are still up resulting in our test rig showing growth beyond domestic proportions, time to start looking for some real demo space.

The long awaited LS3/mfb subs are now scheduled for Xmas 2022, sorry for the delay.
Jul 03, 2022 7:18:54am
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Building Little/One and Grown/Up amplifier modules using the @[234443101357:274:Texas Instruments] @[791004460936696:274:Tpa3116] class D poweramp.
Building Little/One and Grown/Up amplifier modules using the Texas Instruments Tpa3116 class D poweramp.
May 23, 2022 4:50:34pm
Mobile uploads
Beyond Just Technology: these module cables are made from only the finest 6-nines Unobtanium™ alloy, molecularly assembled in our Alternate Universe™ reality-distortion tesseract field , using a secret geometry reverse-engineered from crashed UFOs, painstakingly smuggled out of Area 51 by deep-cover operatives. Performance is further enhanced by the use of a QuantConnect™ quantum-entangled pair of transmission interfaces, held at absolute zero by our exclusive Stasis Field™ technology. The cables are then wrapped in NanoAeroCap™, a nanotechnology-enabled aerogel anti-capacitance insulation system, featuring Fractal Interleaved Geometry™ to create negative inductance for maximum audio transmission quality. Or, er, well . . . again, no. These are nice, high-quality Little/One system cables, with solid, reliable connectors. That’s it. Hope you like them! (thanks @[141556939236271:274:Schiit Audio] for the inspiration 😎 )
Beyond Just Technology: these module cables are made from only the finest 6-nines Unobtanium™ alloy, molecularly assembled in our Alternate Universe™ reality-distortion tesseract field , using a secret geometry reverse-engineered from crashed UFOs, painstakingly smuggled out of Area 51 by deep-cover operatives. Performance is further enhanced by the use of a QuantConnect™ quantum-entangled pair of transmission interfaces, held at absolute zero by our exclusive Stasis Field™ technology. The cables are then wrapped in NanoAeroCap™, a nanotechnology-enabled aerogel anti-capacitance insulation system, featuring Fractal Interleaved Geometry™ to create negative inductance for maximum audio transmission quality.

Or, er, well . . . again, no. These are nice, high-quality Little/One system cables, with solid, reliable connectors. That’s it. Hope you like them!

(thanks Schiit Audio for the inspiration 😎 )
Apr 30, 2022 10:59:36am
We've got some good and exciting news for Infinity IRS owners, Lautsprecher Manufaktur in Germany is working on servicing IRS servowoofers using our Starbass accelerometer products.
Apr 21, 2022 6:19:15pm
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Apr 18, 2022 5:51:11pm
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So we did the enclosures last week, this week has been mostly about module building, next week will be woofers mod week !
So we did the enclosures last week, this week has been mostly about module building, next week will be woofers mod week !
Apr 14, 2022 3:19:41pm
Building things :-)
Mar 14, 2022 10:22:33am
Feb 20, 2022 3:16:04pm
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Busy preparing the Grown/UP CNC gcode
Busy preparing the Grown/UP CNC gcode
Feb 15, 2022 8:46:46pm
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Working hard preparing ourselves for the upcoming Grown/Up and Servo/Sub boards while at the same time doing preparations for the expiry of some universal patent next year.
Working hard preparing ourselves for the upcoming Grown/Up and Servo/Sub boards while at the same time doing preparations for the expiry of some universal patent next year.
Jan 26, 2022 11:21:53am
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Holidays greetings & the best wishes for the new year from Amsterdam, may the bass be with you all, stay healthy & happy !
Holidays greetings & the best wishes for the new year from Amsterdam, may the bass be with you all, stay healthy & happy !
Dec 22, 2021 2:40:46pm
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We've come up with a new tribute candidate. Adding -3dB@30hz to your LS3/5a our LS3/se, SE for Servo Extension, measures 19x19x16.5 cm, comes equipped with it's own filtering, 18dB motional feedback servo loop, class D amplification and can either be connected directly to the LS3/5a binding posts or via a separate line level signal. Please leave your tips, thoughts and remarks in the comments below.
We've come up with a new tribute candidate. Adding -3dB@30hz to your LS3/5a our LS3/se, SE for Servo Extension, measures 19x19x16.5 cm, comes equipped with it's own filtering, 18dB motional feedback servo loop, class D amplification and can either be connected directly to the LS3/5a binding posts or via a separate line level signal. Please leave your tips, thoughts and remarks in the comments below.
Nov 29, 2021 11:54:02am
Due to the ever extending electronic components shortage it is taking a little longer to finish our first sub proto as we have to solder some of the surface mount devices ourselves 😎
Nov 29, 2021 8:07:39am
We'be been strong advocates of the Texas Instruments tpa3116 and tpa3255 integrated solutions because of their sublime form factor and hard to beat price/performance ratio.

For 2022 we are planning to broaden our portfolio with add-on modules for powered modules from miniDSP and Pascal.
Nov 06, 2021 11:57:40am
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We finally managed to order a batch of coaxials for use with our Grown/Up 3 way MFB enclosure. If all works out - think covid - we're aiming it's product launch for Feb 2022. Like our Little/One Mk2 the Grown/Up will also be offered for review to the leading dutch Hifi page @[121880794514444:274:HiFi.nl] 😊
We finally managed to order a batch of coaxials for use with our Grown/Up 3 way MFB enclosure. If all works out - think covid - we're aiming it's product launch for Feb 2022. Like our Little/One Mk2 the Grown/Up will also be offered for review to the leading dutch Hifi page HiFi.nl

😊
Nov 05, 2021 5:08:58pm
Demo rig preparations for the upcoming Dutch Audio Event.
Oct 15, 2021 1:43:32pm
Please meet the latest addition to our Little family, the Little/Sub. Based upon the same proven tech as our Little/One but configured as a mono subwoofer channel in a 24x24x24 cm enclosure driving a Piratelogic 08S5-4 subwoofer.

Keep an eye on our sales site servolabs.nl for updates.
Oct 10, 2021 5:20:01pm
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We will be attending the Dutch Audio Event trade show (formerly known as x-Fi) 30 & 31 October in Veldhoven, the Netherlands. Checkout dutchaudioevent.nl for tickets & details.
We will be attending the Dutch Audio Event trade show (formerly known as x-Fi) 30 & 31 October in Veldhoven, the Netherlands. Checkout dutchaudioevent.nl for tickets & details.
Oct 07, 2021 8:53:14am
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It's been a busy week working on several modules, those of you who have been following this page for some time know that I've been working on a fix for my Toyota Aygo awfull soundsystem and I'm very exited to share the first beta of the SD2B2H4D board with you. Based upon the proven Little/One tech this board contains a stereo 2 way system with onboard step-up module to lift the 12 battery supply to 24V. 80x100mm in size and designed to fit the 8cm deep the rear shelf without impacting the already tiny trunk. Time for a beer now, have a great weekend you all !
It's been a busy week working on several modules, those of you who have been following this page for some time know that I've been working on a fix for my Toyota Aygo awfull soundsystem and I'm very exited to share the first beta of the SD2B2H4D board with you. Based upon the proven Little/One tech this board contains a stereo 2 way system with onboard step-up module to lift the 12 battery supply to 24V. 80x100mm in size and designed to fit the 8cm deep the rear shelf without impacting the already tiny trunk.

Time for a beer now, have a great weekend you all !
Sep 10, 2021 6:07:36pm
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About to test a new batch of Little/One modules 😎
About to test a new batch of Little/One modules 😎
Sep 03, 2021 5:07:15pm
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Updated the Little/One productpage with MK2 info. https://piratelogic.nl/?p=en.littleone
Updated the Little/One productpage with MK2 info.

https://piratelogic.nl/?p=en.littleone
Aug 16, 2021 1:34:22pm
Mobile uploads
Already shown earlier this week, the two way DIY module sdbh2d - Servo Drive Bass High with 2 class D amplifiers - which represented the first member of the new automotive mfb series. The second member is the sdb1d, a Tpa3116 pbtl based 100 watt single channel mfb subwoofer module.
Already shown earlier this week, the two way DIY module sdbh2d - Servo Drive Bass High with 2 class D amplifiers - which represented the first member of the new automotive mfb series. The second member is the sdb1d, a Tpa3116 pbtl based 100 watt single channel mfb subwoofer module.
Jul 17, 2021 6:40:09am
Good news for DIY mfb lovers, the newly developed SERVO/DRIVE module has survived it's first tests and is performing wonderfully. This 1st proto contains a 2way MFB system with 12dB servo loop, 2nd order Sallen Key xover, 2nd order high pass and includes an onboard Tpa3116 class D amplifier on a 66x50 cm PCB. Connect a tweeter and modified woofer, hookup 24V and a signal source and you are good to go.

I expect the next proto to become available for general consumption by Xmas this year and will be sold as a kit including the module and a StarBass V or ClingOn accelerometer. A youtube tutorial on howto modify a woofer is in the making. Pricing will be announced shortly and is targeted between 200 and 250 euro per set of two.
Jul 12, 2021 8:29:28pm
Second Little/One MK2 batch of 10 is taking shape.
Jul 06, 2021 10:27:02am
Mobile uploads
Little/One bh2d amplifier module
Little/One bh2d amplifier module
Jun 24, 2021 9:21:21pm
Mobile uploads
Little/One MK2 enclosures
Little/One MK2 enclosures
Jun 24, 2021 9:12:14pm
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Adding this to our Grown/Up and Little/One 😎
Adding this to our Grown/Up and Little/One 😎
May 08, 2021 9:39:57am
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"I need something big for my man cave, hearing low notes ain't enough, I need to FEEL the bass thumping against my chest. " Feel free to comment below on our man/cave design thoughts (image not to scale :-) ) : Low note : 14-100hz, impulse compensated dual longstroke 10" drivers with individual ClingOn loops. Mid note : 100-1000hz, current driven 8 inch in cardioid setting. High note: 1000-20K, pro ribbon. Initial test setup includes XLS10, L8S800 and SA8535 drivers but will change since both mid and hi are no longer in production.
"I need something big for my man cave, hearing low notes ain't enough, I need to FEEL the bass thumping against my chest. "

Feel free to comment below on our man/cave design thoughts (image not to scale :-) ) :

Low note : 14-100hz, impulse compensated dual longstroke 10" drivers with individual ClingOn loops. Mid note : 100-1000hz, current driven 8 inch in cardioid setting. High note: 1000-20K, pro ribbon. Initial test setup includes XLS10, L8S800 and SA8535 drivers but will change since both mid and hi are no longer in production.
Apr 12, 2021 12:41:48pm
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The Little/One MK2 module frontpanel layout is taking shape.
The Little/One MK2 module frontpanel layout is taking shape.
Apr 11, 2021 1:46:46pm
Working hard to get our first batch of Little/One Mk2 enclosures ready.
Mar 20, 2021 6:45:52pm
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There was a problem with our mailserver not allowing inbound messages which has been fixed, incase your email bounced please resend!
There was a problem with our mailserver not allowing inbound messages which has been fixed, incase your email bounced please resend!
Mar 14, 2021 5:32:51pm
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Busy building Little/One Mk2 modules .....
Busy building Little/One Mk2 modules .....
Mar 10, 2021 1:27:27pm
Modding a batch of Little/One Mk2 woofers with StarBass accelerometers.
Mar 04, 2021 5:02:35pm
Using the weekend to relax, sit back and enjoy some listening test with the original Little/One (top), the Mk2 with ScanSpeak & SB acoustics drivers and the Grown/Up 3 way systems. First impression is that except for the extra Grown/Up SPL the low note performance is pretty much identical between the lot. The real difference comes with the imaging depth and overall quality of the mid/high notes with the Little/One Mk2 performing significantly better then its predecessor.

Grown/Up development has also made a considerably leap forward with the new tpa3255 based bmh3d module offering increased power, spl and control.
Feb 21, 2021 3:56:38pm
3 way active enclosure with coaxial mid/high driver and a Piratelogic 08S5-4 servo woofer. 20dB feedback loop. 30hz - 20K @ -3dB. 24cm deep, 24cm width, 36cm height. Designed & build in Amsterdam by Chris & Chris.
Feb 07, 2021 12:27:09pm
Mobile uploads
Wondering if there would be a demand for little/one electronics in scale models like this...... Have a great weekend !
Wondering if there would be a demand for little/one electronics in scale models like this...... Have a great weekend !
Feb 05, 2021 9:05:24pm
Just a quick update on what's brewing:

- The first listening tests with our SBacoustics tweeter and ScanSpeak woofer equipped Little/One Mk2 have finished, it's new drivers together with a xover lift to 3400hz have resulted in a remarkable sonical improvement over the original design. The bass performance remained identical but there is a clear improvement in female voice reproduction and overall high note resolution.

- The original Little/One has also received an update in the form of a newly developed accelerometer, the Stripper, with a decreased addition to Mms of just 1 gram (StarBass 54 = 3.5 grams) allowing it's Xover to be increased from 1500 to 2400hz, measurement details will follow on youtube.

- Our 3rd TPA3255 based Grown/Up amplifier module prototype has survived thermal testing, I hope to order the first release candidate pcb's within a week or 2.

- The raw power of the tpa3255 based Grown/Up module plus the popular demand for a stand alone Sub woofer solution has led to the development of a single channel servo subwoofer solution capable of delivering upto 315 into 4 or 495 Wrms into 2 ohms running of a single 48Vdc psu. ETA is xmas 2021.

Last but not least we're building a separate shop for module sales under the name ServoLabs.
Feb 01, 2021 11:59:11am
Timeline photos
A happy & healthy 2021 to you all !
A happy & healthy 2021 to you all !
Jan 05, 2021 12:03:45pm
Working on getting you RF interference free servo loops
Dec 23, 2020 7:58:14pm
Little/One enclosures
We were planning on launching our new Grown/Up and improved Little/One Mk2 this Xmas but have decided to postpone things into 2021 hoping dr Anti/Virus will have normalized the trade show bizz by then.
We were planning on launching our new Grown/Up and improved Little/One Mk2 this Xmas but have decided to postpone things into 2021 hoping dr Anti/Virus will have normalized the trade show bizz by then.
Dec 09, 2020 9:26:28pm
Timeline photos
With all the buzz surrounding these drivers plus the fact that there already appears a free tab waiting for a StarBass connection board we've asked Santa for a pair with their dust domes not yet mounted. If they perform as expected we're looking at shrinking our dear Little/One's even further.
With all the buzz surrounding these drivers plus the fact that there already appears a free tab waiting for a StarBass connection board we've asked Santa for a pair with their dust domes not yet mounted. If they perform as expected we're looking at shrinking our dear Little/One's even further.
Oct 29, 2020 9:26:04pm
Timeline photos
We're silent because we're busy 😎
We're silent because we're busy 😎
Oct 01, 2020 7:29:38pm
Timeline photos
The new tpa3255 based Grown/Up 3 way module is up & running, the increase in servo control over the former tpa3116 module is remarkable.
The new tpa3255 based Grown/Up 3 way module is up & running, the increase in servo control over the former tpa3116 module is remarkable.
Aug 27, 2020 4:25:56pm
Timeline photos
We had our Croatian summer holiday dramatically shortened from the initial 2 weeks to just 3 days by this 0.1uM surface mounted disease known as covid 19 🤬 I've taken the opportunity for an early start assembling the already 4th prototype Grown/Up amplifier module. We're safe & healthy sofar and hope the same applies to you and your loved ones, stay vigilant and remain careful out there please.
We had our Croatian summer holiday dramatically shortened from the initial 2 weeks to just 3 days by this 0.1uM surface mounted disease known as covid 19 🤬 I've taken the opportunity for an early start assembling the already 4th prototype Grown/Up amplifier module.

We're safe & healthy sofar and hope the same applies to you and your loved ones, stay vigilant and remain careful out there please.
Aug 05, 2020 2:28:10pm
Timeline photos
The EVE manual has received an update, a chapter on accelerometer selection was added. https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2020.0.manual.en.pdf
The EVE manual has received an update, a chapter on accelerometer selection was added.

https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2020.0.manual.en.pdf
Jun 28, 2020 12:59:00pm
Timeline photos
Preparing a new chapter for the EVE manual on StarBass accelerometer model selection and ClingOn placement variants.
Preparing a new chapter for the EVE manual on StarBass accelerometer model selection and ClingOn placement variants.
Jun 25, 2020 11:24:05am
Timeline photos
The first draft for the EVE 2020.0 manual is here, please put any irregularities or questions you might find or have into the comments below. Bare PCB's are available for 25 euro a piece, kits as well as smd prepopulated boards are expected to arrive week 27. https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2020.0.manual.en.pdf
The first draft for the EVE 2020.0 manual is here, please put any irregularities or questions you might find or have into the comments below. Bare PCB's are available for 25 euro a piece, kits as well as smd prepopulated boards are expected to arrive week 27.

https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2020.0.manual.en.pdf
Jun 14, 2020 5:05:22pm
Timeline photos
Busy writing the EVE 2020 manual with input from this diyaudio thread : https://www.diyaudio.com/forums/subwoofers/336070-mfb-aci-sv12-drivers-using-piratelogic-electronics.html
Jun 11, 2020 11:40:16am
EVE 2020.0 sneak preview.
May 26, 2020 2:23:36pm
Just a quick update on what's cooking over at our servo labs. We're very happy to announce our first batch Little/Ones have all found new homes and we've started work on the second series with Scan Speak woofers, SB Acoustics tweeters and some work into copying the iconic 532 signal light for the new tribute 😎

The small PCB in the last picture is a tiny class B amplifier module called Anti/Dote which got created during lockdown as a puzzle alternative.
May 18, 2020 8:30:53am
Mobile uploads
The new batch StarBass 54 pcb's have finally arrived, existing orders will be shipped next week.
The new batch StarBass 54 pcb's have finally arrived, existing orders will be shipped next week.
Apr 24, 2020 8:35:20pm
Timeline photos
StarBass V build 09APR2020 has been ordered. ETA May-June 2020.
StarBass V build 09APR2020 has been ordered. ETA May-June 2020.
Apr 14, 2020 12:50:04pm
Arta FR2 pink noise open loop ClingOn frequency response and phase margin measurements in CSS SDX10 driver. ClingOn decoupling happens at 5hz and 8Khz offering a valid foundation for further testing.
Mar 07, 2020 11:54:37am
Mobile uploads
The ClingOn SDX10 measurements are looking good and will be published next week. Enjoy your weekend !
The ClingOn SDX10 measurements are looking good and will be published next week. Enjoy your weekend !
Mar 06, 2020 5:11:57pm
Timeline photos
900+ organic likes, thank you servo lovers 😎
900+ organic likes, thank you servo lovers 😎
Feb 20, 2020 1:40:51pm
Modding a CSS SDX10 with a ClingOn accelerometer.
Feb 19, 2020 10:57:18pm
Timeline photos
Enjoy your holidays & best wishes for the new year !
Enjoy your holidays & best wishes for the new year !
Dec 23, 2019 10:40:04am
Timeline photos
Grown/Up development has entered it's 4th prototype stage. Among the design changes are use of a Texas Instruments TPA3255 amplifier and post filter feedback to further minimize LC distortion. The PCB design is about 80% finished, live tests are scheduled for Feb 2020.
Grown/Up development has entered it's 4th prototype stage. Among the design changes are use of a Texas Instruments TPA3255 amplifier and post filter feedback to further minimize LC distortion. The PCB design is about 80% finished, live tests are scheduled for Feb 2020.
Dec 19, 2019 10:33:56am
Timeline photos
Please note the EVE kit is currently sold out, a new version is under development and expected to become available Q1 2020.
Please note the EVE kit is currently sold out, a new version is under development and expected to become available Q1 2020.
Nov 21, 2019 8:00:47am
We're silent because we're busy 😎
Sep 03, 2019 6:30:03pm
Mobile uploads
Checking my mail while slowly recovering from a -20C° temperature dip - thanks Athens you are a truly unique place to visit 😍 - I found this, an ultra low noise coreless current sensor from AKM which will be used with my next EVE build to add optional current feedback. ETA Xmas 2k19.
Checking my mail while slowly recovering from a -20C° temperature dip - thanks Athens you are a truly unique place to visit 😍 - I found this, an ultra low noise coreless current sensor from AKM which will be used with my next EVE build to add optional current feedback. ETA Xmas 2k19.
Jul 10, 2019 11:38:33am
Timeline photos
We're taking a break !
We're taking a break !
Jun 17, 2019 4:57:13pm
Timeline photos
For those driving small economy cars like us getting a decent bass response from the in car sound system can proof challenging, specially since space for subwoofers is limited. So we've started a 12V design on something that will fit the standard back shelf and will be only 7cm deep.
For those driving small economy cars like us getting a decent bass response from the in car sound system can proof challenging, specially since space for subwoofers is limited. So we've started a 12V design on something that will fit the standard back shelf and will be only 7cm deep.
May 31, 2019 5:22:35pm
The Grown/Up module lends itself not just for building new enclosures, it's also fun to use it for modding vintage enclosures like this B&O S-45 three way 😎
May 23, 2019 5:38:10pm
Mobile uploads
KIT in the making 😎
KIT in the making 😎
May 18, 2019 9:17:15pm
Just returned from a short holiday break, slowly getting back to work. Already found some good looking StarBass & EVE testresults on diyaudio :-)

https://www.diyaudio.com/forums/subwoofers/336070-mfb-aci-sv12-drivers-using-piratelogic-electronics-4.html#post5790742
May 14, 2019 6:43:44pm
May 07, 2019 12:28:09pm
Timeline photos
Finally found a few hours time to update https://piratelogic.nl. It still ain't 100% ready but we're getting there.
Finally found a few hours time to update https://piratelogic.nl/ It still ain't 100% ready but we're getting there.
Apr 11, 2019 2:22:55pm
"I have been using two of these vented 6.5 cu. ft. subs with my stereo/home theatre system since 2000. While they have been re-aligned since then, they are big and they are not pretty. I plan to repurpose these 'classic' drivers in a servo-feedback design or die trying. "

https://www.diyaudio.com/forums/subwoofers/336070-mfb-aci-sv12-drivers-using-piratelogic-electronics-3.html
Apr 03, 2019 10:18:41am
Timeline photos
Almost can't wait for @[808298241:2048:Chris] to finish our next Grown/Up prototype mfb enclosure, a combination of a 4 inch Omnes Audio CX3.0 coaxial mid/high driver and a 8 inch Piratelogic woofer equipped with a StarBass V servo drive accelerometer. 24x24x35 cm, 20 liter, fully active 3 way design with 4th order LR filters, 100 watts total RMS power, -3dB @ 30hz. Working hard to get things ready for this years @[360021600737717:274:XFI Premium Audio Show] 😎
Almost can't wait for Chris to finish our next Grown/Up prototype mfb enclosure, a combination of a 4 inch Omnes Audio CX3.0 coaxial mid/high driver and a 8 inch Piratelogic woofer equipped with a StarBass V servo drive accelerometer. 24x24x35 cm, 20 liter, fully active 3 way design with 4th order LR filters, 100 watts total RMS power, -3dB @ 30hz. Working hard to get things ready for this years XFI Premium Audio Show 😎
Feb 24, 2019 2:27:05pm
Timeline photos
For those feeling reluctant to start cutting into polypropylene cones / not feeling entirely confident removing dustdomes / trying to avoid nightmare scenarios wasting expensive drivers : a modification guideline with usefull tips & tricks is in the making.
For those feeling reluctant to start cutting into polypropylene cones / not feeling entirely confident removing dustdomes / trying to avoid nightmare scenarios wasting expensive drivers : a modification guideline with usefull tips & tricks is in the making.
Feb 21, 2019 9:50:01pm
ISE2019 in a nutshell. Thanks for being a cool spot for evangelizing servo bass 😎
Feb 08, 2019 10:56:09pm
Timeline photos
Any Tina users overhere ?
Any Tina users overhere ?
Feb 01, 2019 7:14:21am
Mobile uploads
Piratelogic Grown/Up development.
Piratelogic Grown/Up development.
Jan 30, 2019 12:47:26pm
Mobile uploads
741 likes. Thank you !!!
741 likes. Thank you !!!
Jan 27, 2019 8:05:59am
Timeline photos
@[201551693773390:844:ISE 2019 RAI Amsterdam] preparations 😎
ISE 2019 RAI Amsterdam preparations 😎
Jan 26, 2019 1:03:56pm
Timeline photos
Morten from Denmark asked what the best spot would be for a ClingOn accelerometer to be fitted into his JBL2241 driver and made this nice infographic, love it 😎 Location A on top of the voicecoil former is the most ideal location from a linearity / basestrain perspective but requires cutting the dustcap. Location B is less ideal due to possible pickup of dustdome resonances and flexing of the sensor base. Location C increases the risk of picking op partial cone movement - breakup and also posses the risk of introducing an asymmetrical load to the VC. Location D is our favourite for now.
Morten from Denmark asked what the best spot would be for a ClingOn accelerometer to be fitted into his JBL2241 driver and made this nice infographic, love it 😎

Location A on top of the voicecoil former is the most ideal location from a linearity / basestrain perspective but requires cutting the dustcap.

Location B is less ideal due to possible pickup of dustdome resonances and flexing of the sensor base.

Location C increases the risk of picking op partial cone movement - breakup and also posses the risk of introducing an asymmetrical load to the VC.

Location D is our favourite for now.
Jan 04, 2019 8:15:12am
Happy 2K19 !!!
Jan 01, 2019 1:10:24am
Timeline photos
As of today our Little/One's are on demo at @[185447152236597:274:Headphone Auditions Amsterdam]
As of today our Little/One's are on demo at Headphone Auditions Amsterdam
Dec 04, 2018 1:54:26pm
Timeline photos
We finally found an high end audio shop willing to give our Little/One a chance. Located downtown Amsterdam and filled right from its rooftop downto its basement with serious audio. The only demand made was for a stylish enclosure matching their signature brand so we came up with this nice looking wooden version on top of it's little Tribute brother. The name of the shop will be announced next week once the demo is in place. Equipped with our latest StarBass servo technology this little/one - 17 x 17 x 24 cm - will happily reproduce anything between 30hz and 15Khz @ -3dB. .
We finally found an high end audio shop willing to give our Little/One a chance. Located downtown Amsterdam and filled right from its rooftop downto its basement with serious audio. The only demand made was for a stylish enclosure matching their signature brand so we came up with this nice looking wooden version on top of it's little Tribute brother. The name of the shop will be announced next week once the demo is in place.

Equipped with our latest StarBass servo technology this little/one - 17 x 17 x 24 cm - will happily reproduce anything between 30hz and 15Khz @ -3dB.
.
Nov 28, 2018 7:30:57pm
We just completed some preliminary tests with our first ClingOn prototype and a wavecor SW223 driver, looking at the sensor FR response a 12 dB D3 reduction at 600 Hz should work just fine 😎😎😎
Nov 27, 2018 12:47:10am
Timeline photos
With the increasing number of high power long excursion drivers entering our pirateship :-) it's time to bring in some serious testing gear.
With the increasing number of high power long excursion drivers entering our pirateship :-) it's time to bring in some serious testing gear.
Oct 16, 2018 9:55:21am
Mobile uploads
Meet our latest StarBass VI testing victim, the SDX 12 inch long stroke sub woofer by CSS. Sponsored by miniDSP.nl 😎
Meet our latest StarBass VI testing victim, the SDX 12 inch long stroke sub woofer by CSS. Sponsored by miniDSP.nl 😎
Aug 20, 2018 9:35:57pm
Timeline photos
The coming week will be spend on fixing vintage mfb gear, building Little/One, EVE and StarBass modules and cooking Indonesian food. I love my job😎
The coming week will be spend on fixing vintage mfb gear, building Little/One, EVE and StarBass modules and cooking Indonesian food. I love my job😎
Jul 29, 2018 11:37:51am
Mobile uploads
One of the Grown/Up design goals is to separate the xover and correction logic from the power amplification to allow the module to be used with a large variety of systems. One of the many possible combinations is shown below where the bass channel is powered by a TPA3116 in power BTL mode delivering upto 100watts in 2ohms combined with a standard stereo module delivering upto 50 watts into the mid and high channels. Although by no means high-end it's pretty surprising what these cheap modules are capable of, especially with the stock output filters modded to match the connected drivers impedances.
One of the Grown/Up design goals is to separate the xover and correction logic from the power amplification to allow the module to be used with a large variety of systems.

One of the many possible combinations is shown below where the bass channel is powered by a TPA3116 in power BTL mode delivering upto 100watts in 2ohms combined with a standard stereo module delivering upto 50 watts into the mid and high channels.

Although by no means high-end it's pretty surprising what these cheap modules are capable of, especially with the stock output filters modded to match the connected drivers impedances.
Jul 08, 2018 9:08:52pm
Mobile uploads
Ah. The Grown/Up pcb's are in.
Ah. The Grown/Up pcb's are in.
Jun 12, 2018 9:30:46pm
Timeline photos
Heads up - the current StarBass designs contain a flaw for the PNP transistor pin out which was brought to my attention by @[100001058381699:2048:Noel Neu] (thanks !!) The current versions do work properly but lack the extra linearity provided by the extra PNP transistor. New StarBass V and VI versions are being developed that fix the pinout issue.
Heads up - the current StarBass designs contain a flaw for the PNP transistor pin out which was brought to my attention by Noel Neu (thanks !!) The current versions do work properly but lack the extra linearity provided by the extra PNP transistor. New StarBass V and VI versions are being developed that fix the pinout issue.
May 30, 2018 5:14:45pm
Timeline photos
Working on the MFB controller / x-over for the upcoming release of the Wrinex MFB Planar and Piratelogic Grown/Up enclosures.
Working on the MFB controller / x-over for the upcoming release of the Wrinex MFB Planar and Piratelogic Grown/Up enclosures.
May 14, 2018 12:23:31pm
Timeline photos
Have been busy lately with all sorts of MFB related things, just a quick update to keep ya'll informed. The StarBass V prototypes are sold out. The next StarBass VI prototype supporting a 2S2P Murata sensor setup and voicecoil diameters up to 3 inch is expected to arrive within 2 to 3 weeks. Besides acceleration sensor development the focus is broadened to include DSP MFB processing with these MFBlabs ADAU1777 based proto boards.
Have been busy lately with all sorts of MFB related things, just a quick update to keep ya'll informed. The StarBass V prototypes are sold out. The next StarBass VI prototype supporting a 2S2P Murata sensor setup and voicecoil diameters up to 3 inch is expected to arrive within 2 to 3 weeks. Besides acceleration sensor development the focus is broadened to include DSP MFB processing with these MFBlabs ADAU1777 based proto boards.
May 01, 2018 12:53:47pm
Mobile uploads
Like with any other loudspeaker system one of the main design challenges is with integrating the low, mid and high drivers into something resembling a point source. One route is to use coaxial drivers like Genelec does with their Ones. An alternative route worth investigating is the combination with a planar drivers like electrostats or magnetostats.
Like with any other loudspeaker system one of the main design challenges is with integrating the low, mid and high drivers into something resembling a point source. One route is to use coaxial drivers like Genelec does with their Ones. An alternative route worth investigating is the combination with a planar drivers like electrostats or magnetostats.
Apr 07, 2018 7:43:03pm
Mobile uploads
"M-Force redefines the notion of a traditional transducer, with its parallel moving magnets generating linear movement, surpassing all the limitations brought by the need of purposely wasting power in order to move the mass of a moving coil. This linear movement is achieved without the aid of any rotary to linear converter, making the M-Force a native push-pull device, capable of delivering perfectly symmetrical performances. The sheer force alone allows to drastically reduce cabinet’s volume to SPL ratio, whilst retaining outstanding sound performances, allowing for extremely deep and defined low ends. " Can't wait. (Can't wait as in can't wait to have my sales figures justify investments on drivers like these. Small steps, it took a brand like Genelec 40 years to arrive where they are nowadays, we've only just started.)
"M-Force redefines the notion of a traditional transducer, with its parallel moving magnets generating linear movement, surpassing all the limitations brought by the need of purposely wasting power in order to move the mass of a moving coil.

This linear movement is achieved without the aid of any rotary to linear converter, making the M-Force a native push-pull device, capable of delivering perfectly symmetrical performances. The sheer force alone allows to drastically reduce cabinet’s volume to SPL ratio, whilst retaining outstanding sound performances, allowing for extremely deep and defined low ends. "

Can't wait.

(Can't wait as in can't wait to have my sales figures justify investments on drivers like these. Small steps, it took a brand like Genelec 40 years to arrive where they are nowadays, we've only just started.)
Apr 04, 2018 9:36:22am
Mobile uploads
They grow up so fast...😎
They grow up so fast...😎
Mar 16, 2018 2:16:18pm
Timeline photos
Shown below is the Klippel analyzer Bl (X) curve from the VoiceCoil Test Bench report on the Scan-Speak 28W/4578T00. The asymmetry between BL for the in and outgoing motion is typically something to be addressed by a motional feedback loop.
Shown below is the Klippel analyzer Bl (X) curve from the VoiceCoil Test Bench report on the Scan-Speak 28W/4578T00. The asymmetry between BL for the in and outgoing motion is typically something to be addressed by a motional feedback loop.
Mar 09, 2018 9:35:27am
Timeline photos
Mar 03, 2018 11:07:15am
Mobile uploads
€799 per set! Order now, you won’t be disappointed😎
€799 per set! Order now, you won’t be disappointed😎
Jan 25, 2018 1:44:04pm
Timeline photos
2017 been a good year for motional feedback, may 2018 be even better !
2017 been a good year for motional feedback, may 2018 be even better !
Dec 27, 2017 11:46:29am
Mobile uploads
Have yourself a merry little/one Christmas, May all your bass be low!
Have yourself a merry little/one Christmas,
May all your bass be low!
Dec 24, 2017 1:50:33pm
Timeline photos
Dear fellow motional feedback enthusiasts, It's been a rocky year with lots of interesting new developments in electronics, accelerometers and subsonic enjoyments. We're very excited the time is near for our little/one's to leave the proto nest and fly out into the big open source. We're enjoying a holiday break starting this friday 22dec until 8 Jan next year. May the force be with you and your love ones, Season greetings from Amsterdam & a happy 2K18 !
Dear fellow motional feedback enthusiasts,

It's been a rocky year with lots of interesting new developments in electronics, accelerometers and subsonic enjoyments. We're very excited the time is near for our little/one's to leave the proto nest and fly out into the big open source.

We're enjoying a holiday break starting this friday 22dec until 8 Jan next year. May the force be with you and your love ones,

Season greetings from Amsterdam & a happy 2K18 !
Dec 19, 2017 9:58:01am
Mobile uploads
Working hard on getting the Little One module build manual ready. Starting with the Dutch version....
Working hard on getting the Little One module build manual ready. Starting with the Dutch version....
Dec 17, 2017 6:10:01pm
541 likes, thank you all for your support in making MFB great again :-) Now working towards 544, 545, 567, 585, 586 and 587 :-)
Dec 08, 2017 12:53:17pm
Audiofriends, where we obtain our accelerometer connection litze, dustdomes and rubber & foam surrounds has posted a new video about removing drivers from their enclosures without damaging the original ornamental rings.

https://youtu.be/ZKEWSJSKMD8
Nov 25, 2017 6:22:26pm
Nov 24, 2017 1:57:52pm
Nov 23, 2017 10:53:24am
Nov 23, 2017 10:50:09am
New toys.
Nov 18, 2017 11:23:14pm
Timeline photos
532 likes ! next milestones are 541, 544, 545, 567, 585, 586 and 587 :-)
532 likes ! next milestones are 541, 544, 545, 567, 585, 586 and 587 :-)
Oct 31, 2017 6:18:46pm
Mobile uploads
2012, 587 clone. Time flies 😎
2012, 587 clone. Time flies 😎
Oct 29, 2017 12:33:25am
Mobile uploads
"In studio use, speakers have to survive things like when you PFL a bass drum or bass guitar and it comes through at peak level, or you select a drum overhead just as someone smashes a cymbal and you haven't set the mic levels yet. It's quite a design challenge on top of pure performance..." True, a flat FR is only the beginning.
"In studio use, speakers have to survive things like when you PFL a bass drum or bass guitar and it comes through at peak level, or you select a drum overhead just as someone smashes a cymbal and you haven't set the mic levels yet. It's quite a design challenge on top of pure performance..."

True, a flat FR is only the beginning.
Oct 16, 2017 8:01:23am
Sep 06, 2017 12:10:00am
Been a while since the last update, sorry for that. Busy building, servicing, overhauling and designing things.
Aug 29, 2017 10:29:31am
Timeline photos
Piratelogic sunday afternoon team meeting, from left to right : Ariën - dsp / streaming software development, Emmy - sales & marketing, Sonny - electronics design & artwork, Chris - cosmetics & enclosure design
Piratelogic sunday afternoon team meeting, from left to right :

Ariën - dsp / streaming software development, Emmy - sales & marketing, Sonny - electronics design & artwork, Chris - cosmetics & enclosure design
Aug 13, 2017 3:58:07pm
Timeline photos
While testing the StarBass with the Seas L26R04Y usage of the accelerometer with other popular long stroke subwoofers is being investigated. Among them the Peerless XLS10 driver with its challenging extended polepiece.
While testing the StarBass with the Seas L26R04Y usage of the accelerometer with other popular long stroke subwoofers is being investigated. Among them the Peerless XLS10 driver with its challenging extended polepiece.
Aug 12, 2017 12:11:17pm
StarBass testing material.
Apr 07, 2017 4:38:46pm
Tis tijd om plek te maken voor mijn Little/One en ben daarom begonnen met de verkoop van een voorraad Phillips MFB boxen. Heb je interesse in een setje 544 of 532 laat dan even een berichtje achter. Richtprijs is 125 euro voor een werkende en 250 voor een gereviseerde set.

Voor details zie http://www.mfbfreaks.com/forum/viewtopic.php?f=10&t=9807

I need more space for my Little/One's and will be selling a number of vintage Philips 532 and 544 mfb enclosures. Pricing : 125 for a working and 250 for a revised set.
Mar 08, 2017 4:54:43pm
Busy 😎😎😎
Feb 23, 2017 1:58:58pm
Next to servicing, overhauling and building new motional feedback enclosures the latest Starbass accelerometer prototype tests pave the way for studio monitors like the Adam A7 to be modded into true MFB enclosures.
Feb 05, 2017 12:53:41pm
Place: Piratelogic (52.3457962, 4.9694199)
Address: Buitenlust 83, Diemen, Netherlands
17 good intentions for 2017. Lots of subbass love from Amsterdam & Take care.
Jan 01, 2017 11:05:49am
Just received word from my pcb shop that the new starbass motional feedback accelerometer design prototype has been shipped. Can't wait to test them.
Nov 14, 2016 8:54:32am
The Little/One electronics run of 24V which allows for mobile use using these 18650 li-ion cells. A 6S2P setup with 3400mAh cells contains 163Wh, enough energy for upto 4 hours @ full power.
Aug 28, 2016 9:41:35am
It's weekend, time to relax and think out of the box 😎
Jun 11, 2016 10:30:19am
The first oak enclosure, made from excess floorboard.
May 04, 2016 10:15:08am
the first series of 10 little/one's is slowly coming along ...
Apr 04, 2016 2:05:34pm
The Ekomatic pcb's for the 532, 544 and 567 are in and yes, they are small 😁
Mar 31, 2016 1:59:12pm
Almost done...
Mar 24, 2016 5:18:22pm
Testing cables, plugs & sockets
Mar 14, 2016 11:02:58am
Kevlar test...
Mar 10, 2016 4:51:10pm
The Little/One's are coming!
Mar 04, 2016 11:52:31am
Great article by Erno Borbely : " I use DC coupling whenever possible, because I don’t like “capacitor sound” and also because I am “allergic” to the prices of so-called high-end capacitors."

http://audioxpress.com/article/EB-604-410-All-JFET-Line-Amp-Starter-Kit.html
Feb 14, 2016 8:08:57am
Mobile uploads
587, 567, 544, 532, 541 en de Little/One !
De 10de zelfbouwaudio dag samen met MFBfreaks was een succes !
Feb 06, 2016 5:46:45pm
Nu de printjes in bestelling zijn maar even van de gelegenheid gebruik gemaakt om de anders toch een beetje duffe zondagmiddag creatief in te vullen met de voorbereidingen voor het Little/One kastje.
Jan 24, 2016 11:14:22pm
Did you know we use MFB to create modern musical paintings ? Checkout Archidio
Oct 24, 2015 11:16:57am
Vraagje : wie heeft er hier de beschikking over een dode kamer ?
Oct 06, 2015 9:38:53am
Busy building my first Revision/One 2015 ...
Oct 05, 2015 10:22:00am
Planned for Xmas 2015, the new #revone Revision/One 2015. Shown below is beta 1, I expect the release candidate to be ready in a few weeks.

It's form factor hasn't changed so it will still fit snugly into your old 22RH532, 22RH544 and 22RH567 motional feedback enclosures. But inside are all the lessons learned from the Rev/One 2014, the standby logic has been fixed, the high note darlingtons have been upgraded to a bdx pair similar to the one used in the mid note channel. The highnote output capacity has been increased as well as it's bootstrap cap. The original 544 mid & tweeter protection has been added,

Another major change is the use of Vishay 256 series snapin capacitors for the power supply and low-note amp output. These caps combine excellent ESR figures with just 2 soldering points - a big improvement over the 60+ for the 2014 model.

The pcb floorplan has been further optimized, the box connector has been moved down to avoid the cable from damaging while closing the door. The standby logic has been moved to the middle to minimize mains cabling lengths.

Waarom is dit bericht in het engels ? omdat er fransen, engelsen en italianen meelezen :-)
Aug 26, 2015 8:18:36am
8 x 541, #abcmfb powered, 11 cm deep, full colour painting 120 x 70 cm.
Jul 30, 2015 6:15:50pm
Met een beetje mazzel kan volgende week het tweede prototype van de ABCMFB print de deur uit. Naast printloop optimalisaties zitten er een aantal belangrijke verbeteringen in zoals de mogelijkheid om de fase van de MFB correctielus om te draaien waardoor de abcmfb het zowel doet in de 544 als de 587 serie. Verder zijn er wat mlcc's vervangen door standaard elco's, heeft de regulator voor de NE5532 een upgrade gekregen en is het dynamische gedrag van het rumble filter verder verbeterd.
Jun 20, 2015 2:04:07pm
Heerlijk frezen met zo'n malletje
May 12, 2015 4:14:53pm
ABC frontje met getrapte gaten voor de 7066 en 0160
May 06, 2015 2:07:44pm
de allereerste ABCMFB (AutoBootCaravan) module is een feit !
Apr 24, 2015 10:27:14am
Gisteren begonnen met de Rev/One versie 2015 met als belangrijkste verbeterpunten voor de highnote: dikkere eindtorren, 220uF uitgangscapaciteit, voor de midnote : toevoeging van een overbelasting detectie en lownote : aanpassing van TO3 shape zodat er geen eilandjes meer weggekrast hoeven worden. Verder worden de diverse voedings sporen opnieuw gelegd om de stoorafstanden verder te vergroten en wordt de plaatsing van het voedingscircuit van de correctie versterker onder de loep genomen.
Apr 08, 2015 9:39:15am
En weer een herboren setje 532, wat een wereld product was/is het toch !
Mar 03, 2015 3:12:04pm
De Revision/One krijgt langzaam vorm, alleen nog de brugcel en eindtransistoren monteren en dan kan de spanning erop ...
Oct 16, 2014 11:32:47am