C10 measured 100nF. C3 and C6 had more markings on the side we couldn't see: .10 and 50-V (C3 actually measured 84nF, but they are both probably meant to be 100nF).

R3 measures 4.8K ohms. I will unsolder C10 and measure its value...

Man, you guys are ON it! I was just expecting somebody to go, "Yeah, it's a blah-blah-blah." Here are some more detailed pics...

Hi, gang! For this post, I present a mystery! I have a fully populated FX PCB w/ connected pots that I would like to identify. The only marking is JCW (or perhaps JCW II), and 1983. As you can see in the pictures, the board features a couple NE5532 dual op-amps. I think the two nice sealed pots (bot...

Hi, gang! I want to build a couple MXR 6-band EQs, and for a potential source for parts I bought an MXR 1/3 Octave EQ. My question for the group is: are the slide pots in the rack-mounted EQ the same as in the 6-band stomp box? They are marked 100-1040-104 (MXR part number?) and 1378342. Thanks for ...

I forgot to ask! Does anyone know where I could buy a replacement bottom plate for the enclosure?

Sorry I missed the Zener. Memphis also used the same PCB for their Mini Flange...

Krystal, thanks for your excellent work. It was 2SA641 on my drawing, but my handwriting is not always sufficiently legible (another reason why I should draw schematics with a computer). Yes, the battery is a standard 9v. I too was a bit puzzled by the 2N171. Have you ran your schematic through any ...

Hi, gang! Here are some gut shots of my Memphis Tremolo modulator, and also an x-ray component side shot of the PCB showing parts & placement. I have seen gut shots of many other Memphis pedals online that use the exact same PCB! VERY clever engineering! I had originally intended to draw up a sc...