Shin-ei Mute Box [schematic]
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- Nocentelli
- Tube Twister
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Schematic appears to omit the actual filter section I can't see how the envelope controls the filter sweep
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...
- tube-exorcist
- Resistor Ronker
Hmmm... maybe the led illuminates a double LDR which is symbolized by 4 dots inside a circle (in the left lower corner - in parallel to R19, R20) ?Nocentelli wrote:Schematic appears to omit the actual filter section I can't see how the envelope controls the filter sweep
"I've noticed there's an inverse relationship between cost of gear and talent. If you need the most expensive gear to get decent tones, then you suck as a player."
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- Joined: 27 Jul 2016, 10:47
- Completed builds: Shinei FY-2, D*A*M Meathead, Mid-Fi Electronics Deluxe Pitch Pirate, Clarinot, Demo Tape Fuzz, Random Number Generator, Wattson EFY-6, Smallsound/Bigsound Mini, DBA Reverberation Machine, Parasit Studio Raygun Youth, Vox Repeat Percussion, 1776 Multiplex Echo Machine, David Rolo Twin Peaks, Giant Hogweed, Devi Ever Soda Meiser, ZVEX Machine, SHO, Fat Fuzz Factory.
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I think you're right. I found a discussion about these 4 dots here, and it appears to be a dual photoconductive cell.tube-exorcist wrote:Hmmm... maybe the led illuminates a double LDR which is symbolized by 4 dots inside a circle (in the left lower corner - in parallel to R19, R20) ?Nocentelli wrote:Schematic appears to omit the actual filter section I can't see how the envelope controls the filter sweep
http://archive.ampage.org/threads/1/fxs ... III-1.html
- Nocentelli
- Tube Twister
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It seems to be a virtually the same as the Mutron III, which uses a dual LDR/single LED optocoupler - Marked with the question mark in the pic below:
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...