Twin face
- Thread starter K Pedals
- Start date
K Pedals
Well-known member
Thanks man!¡
JetFixxxer
Well-known member
One of my favorite fuzz....
Chuck D. Bones
Circuit Wizard
Another fine build!
K Pedals
Well-known member
Thanks man!!!
Cool Build !
Hi Chuck, Where could you put a Tone Control or Internal Tone Trimmer on this.
Chuck D. Bones
Circuit Wizard
It all depends on what you want to do with the sound. You can reduce the Bass going into the distortion stage, or boost / cut Treble on the output. You can try a couple of things outside the enclosure to see if either of these gets you the desired tone. You can build these on perf, Vero, breadboard or air-circuit.
Bass cut: put an A100K pot in series with the input, wired for minimum resistance at full CCW. Put a 10nF cap in parallel with the pot. Turning the pot CW reduces Bass going in. You can try other cap values, but 10nF is a good starting point.
Treble boost / cut: build a BMP tone stack and connect it between the output and the next pedal or amp. This experiment will work best with the TwinFace VOLUME maxed out. If this does what you want, it can be inserted inside the box, ahead of the VOLUME pot. If the Bass is too weak, increase C2 & C4 to 100nF.
If you really want to go crazy, build a TMB tone stack and insert it ahead of the VOLUME pot.
Any tone control added to the output will reduce the max volume. To get the volume back up, increase R3 & R7. Try 1K. If you need even more volume, go higher. You will have to readjust the internal bias trimmers if you change R3 or R7.
There are FF-type pedals on this site that already have tone controls built-in. The Dung Beetle for instance.
Bass cut: put an A100K pot in series with the input, wired for minimum resistance at full CCW. Put a 10nF cap in parallel with the pot. Turning the pot CW reduces Bass going in. You can try other cap values, but 10nF is a good starting point.
Treble boost / cut: build a BMP tone stack and connect it between the output and the next pedal or amp. This experiment will work best with the TwinFace VOLUME maxed out. If this does what you want, it can be inserted inside the box, ahead of the VOLUME pot. If the Bass is too weak, increase C2 & C4 to 100nF.
If you really want to go crazy, build a TMB tone stack and insert it ahead of the VOLUME pot.
Any tone control added to the output will reduce the max volume. To get the volume back up, increase R3 & R7. Try 1K. If you need even more volume, go higher. You will have to readjust the internal bias trimmers if you change R3 or R7.
There are FF-type pedals on this site that already have tone controls built-in. The Dung Beetle for instance.
Chuck D. Bones
Circuit Wizard
Given that electrolytic caps usually have 20% tolerance (or more), 20uF and 22uF are interchangeable.
Fever2112
New member
Thanks, that is pretty much what I thought as well.
Coda
Well-known member
My first build was a Twin Face, way back in April...I found it hard to play over the summer. The GE transistors I used did not appreciate the heat. Nowadays the GE side wins hands down. The Si side is just a little too...different. Mine prefers single coils. It was a great first build.
spi
Well-known member
I built a Twin Face not too long ago. My Ge side and Si side are pretty similar. But I like Ge for the old school mojo.
Fever2112
New member
in this build?
