Circuitbenders Forum

Circuitbenders Forum => Circuitbending discussion => BENDING TIPS => Topic started by: ne7 on May 19, 2009, 11:03:46 AM

Title: LM386 chip - drive/distortion mod
Post by: ne7 on May 19, 2009, 11:03:46 AM

Hey guys - havent posted anything on here tips wise for a while so thought i'd
throw this one out to you all (the oldies will know this already hehe) but hopefully
this will help some of the new peeps *Grin*...

Code: [Select]

-------------------------------------------------------------------------[ne7]
 Quick n dirty overdrive/distortion/vol boost mod for anything with a LM386 chip

 ____________________
 |                  |
                    |
 8 7 6 5            |<----.
_|_|_|_|_           \     |
|       |           /     | -- 1k to 100k pot (experiment)
|) LM386|           \     |
|_______|           /_____|
 | | | |            |
 1 2 3 4           ---
                   CAP (try diff values)
 |                 ---
 |__________________|
             
------------------------------------------------------------------------------             
                 
                 
Connect pin 1 of the LM386 chip to pin 8 via a pot and a cap - and voila! dirty overdrive (or just a bit of a volume boost) - works very nicely on anything with one of these chips onboard - the basic principle also works for a lot of other amp chips - just experiment/fiddle :D...

further info:
LM386 pinouts/background info on chip: http://www.hobby-hour.com/electronics/lm386-power-audio.php

Title: Re: LM386 chip - drive/distortion mod
Post by: computer at sea on May 19, 2009, 08:15:27 PM

Yeah, this is a nice one.