KD-1A

ADV-Kick - Midwest Analog Products

The ADV-Kick was designed by Thomas Henry from Midwest Analog Products. The circuit is taken directly from different pieces of the "Electronic Drum Cookbook". This is the first module I bought from MAP, and I'm fairly pleased with the sound.

It has a 566 VCO chip for generating the wave forms, a simple decay-only envelope generator that can be routed to amplitude and/or pitch and a 3080 based VCA. There's also a comparator on the gate input which allows you to trigger it from almost anything.

When I originally built the ADV-Kick, I made basically no modifications to the design. The only addition I made was to add a 1M resistor to ground at the gate input. There is a cap on the input that's used to shorten the gate to a trigger pulse. This cap can sometimes hold a charge, causing the module to miss a beat. Adding the 1M resistor helps discharge the cap, making the drum trigger more reliably

Now that I've owned the ADV-Kick for some time, There are a few things that I'd like to add. First and foremost, this thing really needs a pitch CV input. It would also be more flexible if there were seperate EGs for pitch sweep and amplitude decay. Finally, I think this thing could use a lowpass filter with some resonance. At some point I will re-rack this module and add a daughterboard with these changes.

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DP-1A

4 voice digital percussion module - Modified toy

This module has been retired. It is currently being mounted in a new enclosure to become part of a circuit bent noise synth. More information will be added to the site as the design progresses.

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Analog Drum Clone:

Make sure you check out the Analog Drum Clone project that I'm working on for more percussion modules. The Drum Clone is semi-modular with gates and audio routed internally. Since it is pre-patched I decided to give it it's own pages, rather than lump it together with my modular synth.