Foxx Tone Machine to Ultimate Octave?

[olslick]

would someone mind posting pics of this? i'm pretty new to this and i'm going to build a ggg tone machine and mod it to an ultimate octave. i understand the resistor substitutions but i'm not too clear on the fat/bright switch or how to run the resistor to the pot. it all seems self-explanitory, but if i could see pictures i'd be a lot more confident.

[olslick]

also, what kind of transistors are you using for the ultimate octave?

[fuzzo]

 all NPN low gain will work.

For the fat/bright just add a switch to select between the stock values of the cap and the new one to boost mids. (sorry I don't have their values )

[olslick]

sorry, but i've just gotten around to doing this. i think that the fat/bright switch should look like this...

http://i295.photobucket.com/albums/mm149/olslick/sc00af1739.jpg

and i'm stiil a little unsure about this..."You need to add a 10k resistor from S3(after the 10uF electrolytic) to lug 3 of the Sustain/Fuzz pot
The Volume and Tone pots need to be changed to 100k
I left the Sustain/Fuzz pot at 50k or you can use a 100k pot with a 100k resistor across the lugs..."

i don't know what s3 is. and a 100k resistor across the lugs? all the lugs?

[olslick]

i noticed that on the actual fulltone, they used an spdt switch with six lugs. looks like two for cap A, two for cap B and i can't tell where the other traces go. do you think it would work if i wired it like this, and used the two center lugs to wire to the pcb?

also, i'm sill not clear on the stuff from my last post if anyone wants to give me a hand...

[olslick]

bump

[El Heisenberg]

Its a DPDT switch. Its just like a SPDT except it's two of them in the same switch. Its hard to explain the wiring of the tone switch, u just gotta solve the puzzle looking at the schematic. You'll figure that out.

I dunno why he put S3. But just put the 100k resistor, if youre using 100k pot for the sustain control, between lugs 3 (after the 10 uf cap) and lug 2 of the pot. This will make it act as a 50k pot.

[olslick]

so i finally built this. pretty awesome. my only complaint is that, when the tone knob is all the way towards bass, the sound seems kind of like it's buried deep in the amp. i don't know if i'm explaining this well but that's the best way i can describe it. does anyone know what i mean? is it supposed to sound like that? is there a mod to increase base. all of the modifications i made came from here as far as converting a ftm to an ultimate octave.

also, i bought the transistors that the fulltone schematic specified and they didn't work. i switched them out for the one's i originally had for the ftm, then all was well. anyone know why that could be?