Converting my Peavey TKO 80 Bass Amplifier over to a preamp.

[DrNomis_44]

Hey Doc, sounds like you just hook the rig up as described rather than go to a whole lot of trouble. That way you can keep the 30 watter in case you need it for a quieter practice amp or smaller venue and still be able to use the line out/line in on keyboard amp when you need more grunt.

I was considering that, but the problem is that I can't really get enough volume out of the TKO 80's existing power amp because it starts to distort when I turn it up anywhere past half way, I found that the best solution was to convert the TKO 80 into a bass preamp and use it with my Behringer K3000FX amp, and yes, I did replace the original power supply smoothing caps beforehand.


To use it at smaller venues, or bedroom, I just simply turn the post gain down and the tone is much better sounding.

The TKO 80's existing power amp design isn't the greatest, being a Quasi-complementary design, it inherently has some residual distortion in the output signal, it's a pretty cheap design.