ghostCODE Schematic

This peculiar old Belton Brick design still directs a bunch of questions and requests my way so I'll provide a simplified, working schematic for it. This design is slightly different from the pedal in the video but should be a lot easier to put together.

It's a tough design to make a PCB for as it causes a loud audible ticking that I haven't managed to overcome with various PCB tricks, so I've resorted to remaking it as a wholly digital pedal (watch this space!) The schematic on this page is analog (minus the Belton Brick) so easily DIY-able, although you might encounter the same ticking.

The schematic is intended for a kind of Belton-clone with a PT2399 VCO pin open to being modulated. This isn't the case with Beltons so the area in the square (bottom right) won't work with a Belton. You can easily add a feedback/room size pot on the BTDR-3s. You could play around with C3 and C4 for different frequency/tone options. "FB" is intended as an infinite feedback momentary footswitch.

The reverb signal is boosted to logic level so it can trigger the CD4040 divider chip. A rotary switch selects between different divisions of the reverb frequency which in turn control a tremolo.

"Emphasis / De-emphasis" is an old technique for improving signal-to-noise ratios. Usually it's done with analog designs while the Belton is digital. The Belton has a low pass (anti-aliasing) filter at the input anyway, so the intent here is just to boost the mids/highs so we can hear them more clearly among the noise at the output.