MATRIXSYNTH: MAM MB33 Retro Acid FM mods

Dave Smith Instruments
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Tuesday, March 21, 2017

MAM MB33 Retro Acid FM mods


Published on Mar 21, 2017 circuitbenders.co.uk

"MAM MB33 Retro with Acid FM mods: This video shows the filter FM mod modulating the filter cutoff at audio frequencies using the internal square and sawtooth VCO waveforms as FM sources. It also demonstrates the Filter Lock mod that holds the filter and VCA open with no envelope, the resonance boost, and the overdrive mod.
The MB33 retro seems to be designed to slightly distort the output stage at full volume, much like the TB303 did. The Drive mod boosts this distortion savagely for some grungy acid techno sounds."

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