previous: zachary vex there's a schematic for the doctor ... -- 7/29/2000 9:16 AM

Re: Envelope Controlled Filter using tubes?

7/29/2000 2:31 PM

jon

Re: Envelope Controlled Filter using tubes? Hi Zachary,   Looks like my weekend work is cut out for me...   I've approached several designs just as you suggest...build it up with SS components, then figure out how to make tubes do the job. I'm a lot more comfortable with tubes. On the Dr. Quack, will a TL072 work here?     Those Magnatone vibrato circuits are wonderful...I've restored a 280 and a 410 which got me very interested in voltage dependent resistors. Built several multistage vibrato circuits that I use in stomp box format.....       I've built a Vox type wha using tubes, then tried subbing in a vibro-champ type tremelo circuit for the wha control pot... tried the Magnatone-type vibrato mixed with some of the dry signal(more of a chorus than phase shift) and drive this signal into the wha control pot, also tried both these approaches superimposed on the normal signal path...nothing all that useable, short of the wha and vibrato/chorus/phase shift circuits alone.     After I got burned out with these, started on this octave divider....What you're describing with the Maestro sounds very much like what I've been getting with my circuit, as soon as the signal decays, there's all this "low end burbling" which I attributed to oscillation that I've yet to filter out.     I've been reading up on the one-shot's, seems like they should be able to provide attack delay?? I haven't used LDR's with incandescents, just ne-2's. Is there an advantage here due to the lower voltages?     Thanx for the Gibson GA-100 reference, looks like I've gotta start reviewing some of the guitar amp stuff again.   Jon

 

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zachary vex cool stuff. i don't know about the... -- 7/29/2000 7:27 PM