EHX Small Clone - Volume Mod

A forum devoted to mod, tips and suggestions for upgrading and rehousing your VERY CHEAP commercial stompbox to near boutique excellence.
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HeikoAbendroth
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Post by HeikoAbendroth »

A musician has asked me to increase the output level of the chorus a little bit.

To do this, search for resistance R19 (10 k) and shrunk it down to desire (smaller = more output level)

I decided to solder a trimm pot (25K) on the back side of the pcb parallel to the existing R19, now you can set the output for your choice.

A relatively simple modification - have fun.

For more details visit my my blog
https://pimpyourpedal.wordpress.com/cat ... mods-misc/

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taxfree
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Post by taxfree »

There is more than one 10K resistor in the circuit. Would 10k be close to 20k and 22k?

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bumblebee
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Post by bumblebee »

taxfree wrote: 21 Jan 2022, 11:11 There is more than one 10K resistor in the circuit. Would 10k be close to 20k and 22k?
R19 is the one, (10k) it connects to pin 6 of the 4558.

https://pimpyourpedal.wordpress.com/201 ... olume-mod/

From the site linked above:
D2814581-FA5A-4DCD-95F4-DC9151C5C0EE.jpeg
I so dislike the modern digital world that I need to use semi-digital effects to emulate the analog world of cassette, VHS, and vinyl.

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taxfree
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Post by taxfree »

Could i replace the r10k by a 20K trimpot and an external potentiometer for volume control?

The Jeds Peds PCB Small Clone brings to an external volume control, with a different approach. My question is that there are many other components with different values. Would the only change to volume control be replacing the 33K resistor with a potentiometer or do any other changes need to be made?

https://2bc5345a-db4a-4df7-91d4-0b401b8 ... 0c5355.pdf

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