Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

Vactrol Replacement for DOD 440

7/16/2004 8:25 PM
Alvaro Salinas
Vactrol Replacement for DOD 440
I've built the Guitareffects..... DOD 440 Envelope Filter.. but i just hear a quite distorted guitar signal with no ENVELOPE MODULATION.. Diodes are right, caps and circuit traces of the board too.. but i've desoldered an old vactrol VTLC5 /??? optocoupler (from a compressor stage of and old fender bassman compact) that has the same pins compared to the one in the Layout at Guitar Effects....  
I've replaced it with a diode and a center tapped LDR and the LED doesn't work..  
Any Suggestions?
   Page 1 of 1