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sorted - it was a bad IC chip

Thanks, I did wonder if it was a capacitor, I'll double check them all tonight

Sorry here's some more information:

Schematic and info here:
http://revolutiondeux.blogspot.com/2012/03/dam-ezekiel-2517-bass-distortion.html

I've built it on the PCB from FuzzDog.

The problem is there no matter which set of clipping diodes I have selected which suggests it might be an issue with the IC?

Just built the DAM Ezekiel for a friend and I'm having the weirdest issue.

The first time after you connect the power and engage the effect there is no sound - however if you play a low chord aggressively the effect springs to life and then you can happily switch the effect on and off as normal and it works fine.

If you disconnect and reconnect the power the issue reappears - play a loud chord, effect starts working, effect works normally until you remove and reinsert the power again.

Any ideas?

I am testing with a guitar if that matters

How did you do the art? That looks awesome!

Is that in a 1590b?

I made one in a 1590b and got horrible clock noise when it was boxed 

I've fished the spring tank out of an old Peavey amp and want to use it to make a standalone outboard reverb that I can use as a send effect.

Apparently I need to make a driver to connect to the reverb tank, does anyone know where I can get a PCB for one of these?

that's awesome, how did you do the artwork?

Everything about the enclosure, down to the knob color, is awesome!

That's high praise coming from you sir! Your enclosures always look fantastic!

The DTF is one of those rare, unique effects that does a surprising range of usable things.

Yep, a great circuit, I agree.

We want gut shots!

no you don't!

I like your design.  What's the guts like? I bought a demo tape fuzz pcb from Juan Solo but haven't gotten round to building it yet.

The guts look horrible! All four pots are wired and I didn't use a PCB for the footswitch :/

Just boxed this up, sounds pretty cool for that direct into the mixing desk sound as well as more conventional distortion.

It seems like the EQ section cuts and boosts frequencies BEFORE the distortion stage as cranking the bass can cause the circuit to flub out in a cool way, was wondering if anyone who knows about circuits can confirm this?

that looks awesome! can you tell me about the shielded DC input? I've just finished mine and get a subtle ticking when it's boxed up but not outside the box. I think it's to do with the offboard wiring being too close to each other

What's the sort of wire the people use to get the really clean guts where you can bend corners in it and it stays bent? I'm guessing it's some sort of single core stuff?

I normally use stranded core which works fine but my guts always end up looking like a real rat's nest.

I did try some single core wire that I bought on eBay but I found it impossible to get the solder to stick to it, not sure if I bought the wrong sort? Any recommendations on the right stuff to use?

Next PB build of mine is headed into a 125B so I can unpucker whilst drilling 

I frikkin love, Love, LOVE that graphic - admittedly a child of the 80's, but I don't apologize for it

thanks man! Yep I DO NOT recommend building this in a 1590B unless you are some sort of masochist.

Glad you like the graphics, chorus is very 80s so I thought it needed some 80s artwork