MATHS Channels 1 and 4 are function generators, while Channels 2 and 3 are scale/invert stages that make DC offsets when unpatched

MATHS has four channels arranged symmetrically. Channels 1 and 4 are the function generators: they generate rise/fall voltage functions when triggered, can self-cycle as LFOs, and integrate signals (slew). They carry the Rise/Fall/Both CV inputs, Vari-Response, and the EOR (CH1) / EOC (CH4) gate outputs. Channels 2 and 3 are simpler: they scale, amplify, and invert whatever signal is patched, and with nothing patched they generate a DC offset — CH2 over a wider range than CH3. All four channels feed the central SUM/OR bus through their attenuverters. The asymmetry between the two channel types — full-featured generators versus simple scale/offset stages — is the key to MATHS’s versatility.

Examples

Patch a gate to CH1 Trigger for an envelope. Plug nothing into CH2 and turn its attenuverter to produce a steady DC offset that level-shifts another channel’s signal via the SUM output.

Assessment

Which channels can self-cycle and produce EOR/EOC gates, and which are used mainly for scaling and DC offsets? What does an unpatched Channel 2 or 3 contribute to the SUM bus?