Dr J - D55 Aerolite Compressor  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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mysticwhiskey
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Post by mysticwhiskey »

I haven't yet fully traced the circuit, but I'm about 75% done and at this stage it is looking like it's a Boss CS-2 with a blend mod to mix the dry and compressed signal.

IC is LM13700N, FETs are J201 and transistors are 2N3904.
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P1010025_zps533b86c2.jpg
P1010023_zpsf67e420c.jpg
P1010013_zpsdfb5cc02.jpg
P1010008_zps1f1bc5d4.jpg

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mysticwhiskey
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Post by mysticwhiskey »

Confirmed: This is a Boss CS-2 clone (using a LM13700N instead of BA662A), with adjustable blend of compressed/dry signal.
DrJD55AeroliteCompressorSchematicV01_zpsddb46117.png

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artaommahe
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Post by artaommahe »

So it's half of LM13700 here witout buffer and diode-bias, so can we use CA3080 here? Using less space..

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perwin
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Post by perwin »

I miss values of rezistors in the scheme. Could you please post them?
Also, do you have this scheme and/or pcb design available for download in format for Eagle or KiCad?
Thank you.

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modman
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Post by modman »

perwin wrote:I miss values of rezistors in the scheme. Could you please post them?
Why don't you do some of the work yourself? Gut shots are available and pcb is numbered.
perwin wrote:Also, do you have this scheme and/or pcb design available for download in format for Eagle or KiCad?
Thank you.
This is a Boss CS-2 clone
http://www.hobby-hour.com/electronics/s ... tainer.php
viewtopic.php?f=1&t=4405
https://www.diystompboxes.com/smfforum/ ... ic=28369.0
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal

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