Resonant Lopass Gate PCB's (New Batch 4/29/12)

LektroiD · Posted: Fri Mar 19, 2010 5:55 am Post subject:

Paid for 1 board

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

julianw · Joined: Jul 30, 2007 Posts: 78 Location: UK

Please put me down for 4 more boards

Hoping I'm not too late.... Embarassed

djthomaswhite · Joined: Nov 22, 2007 Posts: 140 Location: Orange, CA

Thanks to all who have placed an order for the Resonant Lopass Gate PCBs. Please do not place anymore orders. The ordering window is closed and I'll be ordering the boards today. Boards should be to me within 2 weeks and all shipped within one week after that. Thanks again!

PS. Julian, please email me at djthomaswhite at yahoo so we can discuss those 4 boards. Thx!

TekniK · Joined: Aug 10, 2008 Posts: 1059

I got several requests for the .ai file for the LPG front i made,so i post it here .

LPG Buchla.ai

Description:

Download (listen)

Filename:

LPG Buchla.ai

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225.02 KB

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loydb · Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI

Just got four that I'd forgotten I ordered! Smile

Always a good day when that happens...

droffset · Posted: Wed Apr 28, 2010 3:58 pm Post subject:

Just received my PCBs, thanks !

mattias · Joined: Jan 26, 2010 Posts: 28 Location: Cologne

Got my boards today! Very Happy

Thanks.

rosch · Joined: Oct 03, 2009 Posts: 164 Location: germany

same here! thank you!
Very Happy

clarke68 · Joined: Sep 10, 2009 Posts: 28 Location: Bay Area, CA

I did a panel design using Teknik's ai file posted above:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Made a bunch of changes from Teknik's design, including flipping the direction of the "flow" (in on top, out on bottom) and I added some of the functionality of Thomas White's board (resonance and offset pots).

I'd love to get any feedback you have, especially from those who have built/used the LPG before. A couple of things I have specific questions on:

1. This layout is for 4 independent LPGs, making no use of the mixer features of Thomas White's board. Is this good/bad/just different? Are the mixers an indispensable feature for anyone?

2. Also missing the inverted CV out(s). Is that a big deal?

3. I'm designing the panel to use knobs I can get easily at Jameco (small, large). Design-wise, this layout puts a lot of emphasis on the CV level function, and I don't know if that's appropriate. Obviously, the emphasis should be on the features that get used the most...what are those for you? (I know this should be a question that I answer for myself, but I don't even have a modular yet...maybe I'm trying to be like Buchla and design the front panels first)

4. I'm not done, but I haven't found an elegant way (yet) to include a fast/slow switch. Does anyone consider that indispensable? Anyone who doesn't have it miss it?

Thanks!

numbertalk · Posted: Tue May 04, 2010 8:20 am Post subject:

I apologize if this is buried somewhere in the previous 38 pages, I was unable to to find it, but anyone have any idea of the current draw of this module on each rail? I'm running it on +/-15V.

Thanks!

Peake · Posted: Sat Jun 05, 2010 3:23 pm Post subject:

Stoopid questions from people who cannot find the answers on their own---

-Will the 3.0 boards also allow the use of a 5C3/2, same placement? The docs weren't exactly clear on any difference between the 3.0 and 3.1...the top page of the nrm site shows what looks like a 3.0 with a 5C3/2...I'll guess that the answer to my question is 'yes', it works like that on both versions.

Thanks for the project!

Embarassed

TekniK · Joined: Aug 10, 2008 Posts: 1059

blue hell · Posted: Sat Jun 05, 2010 4:35 pm Post subject:

fonik · Posted: Sun Jun 06, 2010 6:47 am Post subject:

Peake · Posted: Mon Jun 07, 2010 10:53 am Post subject:

Yes, and thank you for the kind assistance on my question Laughing

I'll trace it out for myself.

jksuperstar

Finally getting around to a few modules I have to build. This is my FRAC layout for the 292c, with full CV and input mixers implemented. Comments welcomed. Front Panel file available.

jk_292.JPG

Description:

my initial FRAC panel design for a Buchla/White 292c/4 Lopass Gate

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This image has been reduced to fit the page. Click on it to enlarge.

macumbista · Posted: Sat Jul 24, 2010 11:28 am Post subject:

Hi all! I'm drafting a panel for a quad version of this finally, and I wanted to know about how the Resonance function of this LPG board compares with the Feedback function in the MakeNoise Quad Multi-Mode Gate.

From the QMMG manual, gate mode BOTH:

davebr · Joined: Jun 09, 2007 Posts: 198 Location: portland, or

macumbista

numbertalk

Thanks Dave!

LetterBeacon · Joined: Mar 18, 2008 Posts: 454 Location: London, UK

Just finished my module and it all appears to work first time! Thanks Thomas for a great module and a really easy build.

Apologies if this has been covered in one of the 32(!) pages of this thread, but what's the best way to set up the trimmer on the board? Is it similar to how the YuSynth filters are set up?

LetterBeacon · Joined: Mar 18, 2008 Posts: 454 Location: London, UK

I've noticed the filter output is much louder than the Both and the VCA outputs. Is this normal? I have to turn my amp up a fair bit when I switch to VCA mode.

Out of the three modes:
Frequency is the loudest, then Both is medium, with Amplitude being the quietest.

Is this normal?

fonik · Posted: Tue Sep 07, 2010 7:02 am Post subject:

RSFC · Joined: Sep 02, 2010 Posts: 63 Location: space lab

Any extra board available?