Thor: insert an EQ?

[Bucksears]

I'm finally thinking about building a Thor for my low(er) Marshall tones and keeping my BSIAB II for my higher gain ones.
The idea of the on/off, hi/lo toggle switches is a bit of a turnoff since I'm a knob-twiddler; can pots be substituted for the toggle switches and a resistor?
Or is it possible to insert a tone circuit somewhere?

Thanks,
Buck

[dschwartz]

yes you can.. choose your favorite tone control and put it in

[bean]

Sub an active control like the TS in place of the tone circuit in U1, or set up a passive filter before U1 (probably a muff type would work well) and set U1 as unity gain or a slight boost (say a 20k in the feedback loop and 10k and 220nf to ground off pin2 for a recovery stage of +3 gain after the tone circuit ((and a -6db dropoff starting @ around 72hz))).

Name it....The Angry Fist of God......

[mth5044]

I'm finally thinking about building a Thor for my low(er) Marshall tones and keeping my BSIAB II for my higher gain ones.
The idea of the on/off, hi/lo toggle switches is a bit of a turnoff since I'm a knob-twiddler; can pots be substituted for the toggle switches and a resistor?
Or is it possible to insert a tone circuit somewhere?

Thanks,
Buck

Try the tonemender. Supposed to be a pretty good tone circuit.

[dschwartz]

yup..tonemender will work great in a thor...i remember making a pcb with both ckts..never built it...

[Bucksears]

Thanks, guys.
Looking at the Tonemender, that looks like a VERY useful circuit.
Where would it go in the Thor schem?

[mth5044]

Probably right on the end, but I'm not sure.

[Bucksears]

And would it require another transistor stage to boost the signal?
(or not, since the Tonemender is active?)

[mth5044]

No, the tonemender doesnt need a recovery stage, so it can basically be a stand alone effect, so just put it on the end of the thor.