Danelectro 3699 Fuzz

[Travis]

Amazing fuzz pedal with octave

 

[spi]

I think this is a straight up Foxx Tone Machine (Fuzzy Fox PCB)

 

[Bricksnbeatles]

I think this is a straight up Foxx Tone Machine (Fuzzy Fox PCB)

To quote the PM I sent Travis about this when he first requested this:

Hey! Just wanted to give you a heads up in case you didn’t know, if you want to build a 3699 before a PedalPCB board potentially becomes available, you can just make a Fuzzy Fox and wire the octave toggle switch as a footswitch, and then just put a 15nF cap in parallel with C9 (the 3nF cap in the tone stack) via a toggle switch for the stock/mid switch.
Those are the only differences between the 3699 fuzz and the stock Foxx Tone Machine as far as I’m aware

 

[Matmosphere]

Yeah the guy who originally made the Foxx Tone Machine back in the seventies bought Danelectro in the nineties. They started doing pedals before guitars. I think the French Toast Fuzz was a $30 clone of the FTM.

 

[thesmokingman]

To quote the PM I sent Travis about this when he first requested this:

as I sit here working on a fuzzy fox, they're not the only differences but I digress

 

[thesmokingman]

ultimate octave passives parts list for fuzzy fox ... I'm not gonna tell you what semiconductors to use, you'll see what I used in a build report sooner or later
Resistors
R1 - 1M
R2 - 1K
R3 - 47K
R4 - 4K7
R5 - 4K7
R6 - 100K
R7 - 47K
R8 - 100K
R9 - 100K
R10 - 100K
R11 - 100K
R12 - 220R
R13 - 10K
R14 - 1K
R15 - 15K
R16 - 150K
R17 - 22K
R18 - 4K7
R19 - 10K
R20 - 1K5
R21 - 47K
R22 - 470K
R100 - 4K7

Capacitors
C1 - 47n
C2 - 47n
C3 - 10u
C4 - 10u
C5 - 10u
C6 - 10u
C7 - 10u
C8 - 10u
C9* - 15n
C10 - 100n
C11 - 10u
C12 - 10u
C13 - 1n
C100 - 100u

* - if you want mids but don't want a mids switch, 1n if you hate mids

 

[Bricksnbeatles]

as I sit here working on a fuzzy fox, they're not the only differences but I digress

Any other notable differences you can share? I had seen something from danelectro stating that the stock mode was a stock FTM circuit, so I’d be interested to know what else differs— all I know is that an 18nf c9 got the tone response the same as the 3699 demos (and that it’s a somewhat common mod value in some other site’s documentation), so the stock 3nf with a 15nf on a switch in parallel would make up the stock/mid boost mode. The octave switch being a footswitch is obvious enough, so any other changes would make it differ from stock (unless there are other FTM circuit revisions I’m not aware of that the 3699 was based on rather than the most commonly documented revision).

 

[thesmokingman]

Any other notable differences you can share? I had seen something from danelectro stating that the stock mode was a stock FTM circuit, so I’d be interested to know what else differs— all I know is that an 18nf c9 got the tone response the same as the 3699 demos (and that it’s a somewhat common mod value in some other site’s documentation), so the stock 3nf with a 15nf on a switch in parallel would make up the stock/mid boost mode. The octave switch being a footswitch is obvious enough, so any other changes would make it differ from stock (unless there are other FTM circuit revisions I’m not aware of that the 3699 was based on rather than the most commonly documented revision).

look up ... I left the passives parts list ... its like a couple parts values ... and the ultimate octave did go through some revisions based on semiconductors used ... but if you can match the octave diodes to within 10 mV of each other you should be good ... lower Vf = easier octave ... also the larger the Vf on the hard clipping diodes, the less compression you're going to get (more or less the function of these diodes in the first place is to limit output volume) ... transistors? pretty much whatever between a 2n3904 at the low end and a 2n5088 at the high end of hfe

 

[Bricksnbeatles]

look up ... I left the passives parts list ... its like a couple parts values ... and the ultimate octave did go through some revisions based on semiconductors used ... but if you can match the octave diodes to within 10 mV of each other you should be good ... lower Vf = easier octave ... also the larger the Vf on the hard clipping diodes, the less compression you're going to get (more or less the function of these diodes in the first place is to limit output volume) ... transistors? pretty much whatever between a 2n3904 at the low end and a 2n5088 at the high end of hfe

You’re talking about the Fulltone pedal, right? Has the 3699 been confirmed to just be an ultimate octave clone? Because I know the UO is a pretty heavily tweaked Tone Machine, and I didn’t think the 3699 was much like the UO other than the external controls being the same and then both being based around the FTM topology

 

[thesmokingman]

at this point who cares? I pretty much left everyone the secrets to the foxx tone machine ... match the octave diodes, hit the gain range, use the clipping diodes to determine compression ... the larger the C9 cap(within reason), the more mids you'll get