My first build was a Fender Champ, early version. Sounds good, only mod was a pot on the NFB. Want to add some tone control, but not the single pot design that just rolls off the treble. I want to scoop the mids. Later Fender designs have a mid pot, but also treble and bass, but I don't want the signal loss you get. Is there a one pot stack that only cuts mids? I saw a presence control that used the NFB thru a cap, but it was a PP circuit with a LTP PI.... Thanks!
I have a Peavey Royal 8 amp I bought cheap for experimentation. Did not sound good.
I moved the tweed type t/c from before stage 2 to after stage 2. And wired it with the "bitmo " mod.
Between stages 1 & 2 I installed a big muff t/c with values chosen for a significant mid-scoop. This circuit reduces signal, but that is the trade off for flexibility, and it has a bypass switch.
The 2 single knob t/c's working in different stages give great flexibility of tone.
I moved the tweed type t/c from before stage 2 to after stage 2. And wired it with the "bitmo " mod.
Between stages 1 & 2 I installed a big muff t/c with values chosen for a significant mid-scoop. This circuit reduces signal, but that is the trade off for flexibility, and it has a bypass switch.
The 2 single knob t/c's working in different stages give great flexibility of tone.
Thanks! I found it on the web, a site called "Muzique", and their AMZ circuit looks like just what I want. Will give it a whirl.....
I adapted a big muff tone control for a different stompbox. Theres a high pass and a low pass filter and you pan between the two to tilt the tone from treble to bass. I also used a dual-gang pot to move the two filters either apart or together so the -3db frequencies either overlap for a mid boost, or have a gap for a mid cut.
If I recall correctly, the overall signal loss is much less than for a typical Fender or Marshall TMB stack. Also, if you want to investigate, Duncans Tone Stack Calculator is a great app for interactive tweaking and you can change all values. Findable by Google.
If I recall correctly, the overall signal loss is much less than for a typical Fender or Marshall TMB stack. Also, if you want to investigate, Duncans Tone Stack Calculator is a great app for interactive tweaking and you can change all values. Findable by Google.
I have the Duncan calculator and, lo and behold, there's the Big Muff tab way at the end! The Muzique site states it needs a low impedance input. I hope between tube gain stages will work. Need to read up on tube design to check, but looks intriguing!
Just a thought...the coupling cap between stages should make the impedance of the following stage real low, as long as you don't put a 1M pot in there...?
You can change the input impedance in the tone stack calculator. I usually use a figure of 60k for a typical tube preamp, and have used this t/c successfully in almost a dozen tube amps now.
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