Andre Abelian wrote:
> Hi to all,
> 
> Remove the opto-coupler and connect your audio directly and 
> use pwm thru opto resister to change the resistance this will
> lower the volume.
> If you do not have opto resister make one take small tube
> one side add led and the other side photo resister. 
> 


But I also want to *amplify* the sound, not just attenuate the
existing volume (which is pretty low)

-- 
Hector Martin (hector@marcansoft.com)
Public Key: http://www.marcansoft.com/hector.asc

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist