[sdiy] OT: Bass Guitar Preamp

[Tim Daugard]

From: "Spencer Johnson" <marxspeakstruth at gmail.com>

> preamp to boost my bass signal so that the amp can power a stack. so i
. . .
> between ground and the input of the unity gain op. my problem is the
> huge amounts of noise i'm experiencing. at low volumes the preamp has
> relitively low noise, but once its turned past a certain level, the
> noise is very audible. at first i thought it was semiconductor noise,
> but i substituted a TL084 for the 741s and i have the same problem.
> any tips? i don't think its just 60Hz noise, but tips to decrease that
> are welcome, too. sorry for the simple post!

Here is my preamp that I use with my bass.

http://home.earthlink.net/~synthfred/h_aln101.htm

and actually the entire system is used with my bass.

I haven't noticed or had complaints about noise with this preamp. I redesigned it to
better couple the bass with the preamp matching the impediance of the bass and the new
design resulted in more hum. That design is not on my website.

Tim Daugard
AG4GZ 30.4078N 86.6227W Alt: 12 feet above MSL
http://home.sprintmail.com/~daugard/synth.htm