Hiya!

I followed a schematic : http://www.runoffgroove.com/littlegemMK2.png

And ended up with a near satisfactory amplifier.

I bridged the 10uf capacitors and replaced it with a 10k pot that adds distortion.

The problem is that when I connect my guitar, I get no audio at all. If I connect it to my computer I get sound.

Also there is alot of background noise.

I removed the JFET that was supposed to be there because I didn't have one, it still works without it, not sure what it was for in the first place.

My distortion is also a bit messed up, having the my pot off (lowest) and then turning it up lowers the sound, but then builds up to the highest volume.

So problems I have are:

No sound from guitar.
Bad/strange distortion
Bad quality sound

Any way to fix this?

 

hi Alan,
The FET provides a high input impedance for whatever is the source of the input signal, in your case the guitar.

Post a diagram showing how you have the guitar > LM386's > Computer interconnected and powered.
E

 

Hello,

You already have a thread with the same question:
Guide to making this amplifier?

One is enough.

Bertus