Tube Amps / Music Electronics
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|5/12/2000 10:16 PM|
||All tube envelope filter?|
Has anyone ever designed or built (or even heard of) an envelope filter (auto-wah) with tubes for the active components? Cool idea? Stupid idea?
Thanks for any input,
|5/13/2000 1:33 PM|
Electro Harmonix has done just that! Its called the Tube Zipper and is going to be available in the coming months. Very interesting......
|5/15/2000 8:16 PM|
It seems to be a well-kept secret - I can't find any references to a Tube Zipper anywhere on the web (though I did get some interesting hits for the word "zipper"). Do you know anything specific about it (tube complement, voltages, opto or not, etc)?
|5/15/2000 8:35 PM|
There was a posting somewhere, complete with pictures a few months back. I didn't get the feeling from looking at it that it was legit. Not to say it was a hoax, but that someone had clearly built something and tacked on some familiar names, and these were either somebody's pipedreams, something made for a trade show and never to be produced, or whatever. What was visible was clearly way out of the price range favoured by EH and their customers. In short, I wouldn't go looking for this at Musician's Friend or Mars anytime soon.
|5/15/2000 9:40 PM|
real or not, here is the url:
|5/15/2000 11:06 PM|
I thought these WERE going to be produced:
from this article:
|5/16/2000 12:13 AM|
Funny how one article says "Electro Harmonix" and the other doesn't... yet it's the same picture on both pages! It turns out that the tube EF is called the Tube-Tron. I wonder who's really making these (does EH sell under a different name in Europe?).
Anyway, it's a stompbox, so it's probably designed for a fairly low supply voltage. What I'm interested in would be a rackmount unit (or integrated with a rack preamp). Since I'm also working on a tube compressor, they could probably share some circuitry, esp. the envelope rectifier. (This is targetted for a bass guitar amp, BTW. I'd like to keep the signal path all-tube between the input jack and the power amp).
Keep those cards and letters coming in folks.
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