Modded a Dano Fab Echo

I stumbled across a mod to give the Fab Echo more flexibility. I replaced the resistor coming off of pin 6 of the PT2399 chip with a new 1k and a 50k pot. I get some trippy sounding repeats now and can control the time. I'm not sure what the top of the range is for time, but it looks like it'll be fun to play with.

$14.95 + a 1k resistor and the 50k pot = great delay for the money.

One problemo though...I still can't figure out where to put the 50k pot...real estate is real small inside the fab housing.

Cheap ideas/thoughts on the housing issue?

PS - sounds to come soon

Since I don't use batteries, I mounted the pot in mine just about centered in that area.

The only downside is that I hit the knob from time to time, but no biggie.

MF gave me a $20 coupon for purchasing enough stuff, and I just happened to come upon the Fab. So I basically got it for free. In some ways, I actually like it (in modified form) better than my Carbon Copy.

These PT2399 delays are a lot of fun. I like combining it with my cheapo Tuna Melt to get some trippy effects.

Actually, I don't use the batts either, so that sounds like a plan. Thanks 11!

Hey, let me grab some pictures of my modded FAB Echo. I've got my delay time pot mounted so you can still use a battery... as well as some other mods.

Here are a couple of pictures of what I've done to my pedal. From the outside, you notice the extra knob on top (delay time) and the 3-way switch on the side ( "Analog" repeats / hi-cut mod ). I plan to mount another switch on the other side for a mod I haven't finished yet...

And here are the gut shots, with the switching/IO board removed. It's completely stock so you don't need to see it! As you can see, I've moved most of the capacitors to the other side of the board. This makes room for a 16mm control pot and the 3-way toggle switch (as well as room for the 2nd switch I haven't added yet.) The wires I use are from a computer IDE cable, I have tons of them around and they're tiny, which is the important part. If this was someone else's pedal I wouldn't have used masking tape, but since it's mine I don't mind. :cool:

I've also done the mods for infinite repeats and wetter mix level that can be found elsewhere on the internet, so I didn't detail those in the pictures. Just bridging resistors really. And as you can see, you can still use a battery!!

The hi-cut mod, if you're interested, is pretty much the same as the one used on the Boss DD pedals. It's mounted between pins 1 and 3 of the repeats knob; the 3-way toggle switch bridges those pins with one of two capacitors (or nothing, in the middle position, for stock repeats). One is a .047uf, I believe, which is the higher cut mode, and the other is a .022uf; that may be wrong, because the way I mounted them I can't read the markings on them without desoldering them, oops! :oops: You can of course adjust cap values for your own taste; if you didn't want it switchable you could just as easily solder a cap across pins 1 and 3 of the repeats pot for a permanent mod.

I've also got a pair of taped off wires, which is part of the mod I haven't finished yet. I just need to buy a switch and a few components but haven't gotten around to it yet.

If anyone wants, I can try to post sound clips of this pedal when it's all done...?