Opinions needed. Best envelope filter/ autowah

[Meanderthal]

 Well, the meatball or the q-tron+ are on the top of my most wanted list right now. I like the loop idea. I saw that meatball project at pisotones and just drooled! You say someone has a perf layout for this? It looks like a monster!
Anyway, I'm in the process of weeding out my zoom 506II for... many reasons and that means building or buying one of each thing I use it for. Envelope filter is one of those things. I can't use my bassballs, my af-9 is long gone, and all the good ones are over $100.00. So, I've been eying up projects, but the meatball is pretty complex!
I've heard nothing but great things about the meatball!

I also need a bass synth, but that's a whole other subject...

[nordine]

don't know if you're after a hugely configurable envelope filter, if not so... why not try the Phungcnosis?(at http://www.geocities.com/tpe123/folkurban/fuzz/snippets.html )

sweet sweeping and feel, also simpler than most envelope filters

[lowstar]

the perf is included in the meatball pdf.
i perfed mine, it was before i started etching pcb´s. it´s really nice to build, and very rewarding (=very useful and gets actually played and gigged).

if you play bass, it is a must build in this guitar player´s diy world 

for bass synth, i´d warmly recommend the eh bass microsynth, though i have to say that i bought mine (got it as a present from my local bass shop together with my new aggie rig  )

cheers,
lowstar

[Meanderthal]

 Yep, sure 'nuff there's a perf layout at pisotones! When I did a search I also stumbled into the McMeat layout, which seems to be identical to the pisotones one. Thanks for the tip!
I guess I didn't notice it before because I was too busy messing with translating from spanish... but they even show you step by step offboard wiring! Cool!
Ok, already have a couple humongous enclosures... Need to get rotary switches... Need Optoisolators... Tl074... Maybe can sub 4558 for 1458?...
Yeah, it's big but do-able!

[lowstar]

the mcmeat is the "original" i think (in terms of diy)
humongous enclosures...i used 1590D...
1458 you will need to get that one, 4558 won´t do...
optos...i used vtl5c3

there are some minor bugs in the offboard-wiring diagrams as far as i can remember...you gotta go by the schem and understanding to get everything right.

cheers,
lowstar

[roknjohn]

Thanks for all the input.

Okay, heres a sample of what I'm looking for.

http://media.putfile.com/EF1

Would like a longer decay as well, but I think I can tweak that from the info I found using the SEARCH.

Which project will get me closest to the clip? Mutron?

[Mark Hammer]

That's gonna be tricky.  The posted sample is a keyboard of some type, I gather, which usually means greater dynamics of the original signal.  The sweep is fairly wide, and the decay fairly quick.  On the other hand, it is clearly a bandpass filter, so that means a large range of candidates. If that's the sound you want, then a properly tweaked Dr. Quack could do it for you, as could a Mutron or Meatball or Bass Balls....

The trick is tinkering with the envelope parameters, not the filter per se.  Since most envelope controlled filter stompboxes come with only limited control of the rectifier time constants, tinkering WILL be required no matter what you settle on or even buy.

[roknjohn]

Yeah, not the best example, but close to what I'm looking for.

Okay, sounds like either of the EH circuits will get me in the general vacinity. I'll plan on that when I place my next parts order.

Thanks to all who provided input.

[oldrocker]

I know most won't agree but I love my Dr.Quack and Nurse Quacky.  I have a great time messing around with those two pedals.  Only thing that's wierd is my Nurse Q works great with a TL072.  When I tried it with a 358 it was weak.  All the threads I've read said the opposite.  I'm not sure why that is.  But what the heck it's working great and everytime I play through in front of someone I always get a smile.

[vanessa]

Any comparisons to these and the DOD 440? I've wanted to build the DOD 440 (Radiohead OK Computer) but wondered how it stacked up against these others.

[oldrocker]

I was going to build a DOD 440 a few days ago so I read up on it.  I decided against it when I read a few people were having problems getting it to work.  That doesn't usually discourage me but that wierd double LDR on the vactrol (I like to make my own) and finding something I could replace the TL022 IC with made me hold up on it.  Sorry I couldn't help but I may build one of these next week.  I let you know how it turns out.