The Lifeforms 2+2 Mixer from Pittsburgh Modular is a flexible, low-noise ambidextrous four-channel mixer and/or attenuator for audio and CV that can be used in several ways. Three of the four channels have an output that can be patched to remove the channel from the mixer circuit and allow it to become a stand-alone attenuator. Each pot is wired with a logarithmic volume curve that is tuned for use with audio but will function with CV as well.
Patching the mix output of 1+2 removes channels 1 and 2 from the mix (3+4) output and creates two, 2-channel mixers. Patching the output of channel 1, 2, or 3 will remove it from the mixer circuit. Channel 4 cannot be removed from the mixer, but if channels 1 through 3 are being used as attenuators, then channel 4 is the only input remaining and can be used as a buffered attenuator. The 2+2 Mixer module is 8hp wide, 0.9" (24mm) deep, and requires 7mA of power. The module includes a ribbon cable.
2+2 Module Controls
- In 1 Jack: Channel 1 input jack
- Out 1 Jack: Channel 1 output jack. Plugging in a cable removes channel 1 from the mixer and allows it to be used as a passive attenuator
- Level 1 Knob: Channel 1 level attenuator
- In 2 Jack: Channel 2 input jack
- Mix 1+2 Out Jack: Channel 1 and 2 output jack. Plugging in a cable removes channel 1 and 2 from the Mix (3+4) output and allows channel 1 and 2 to act as separate a 2-channel mixer
- Level 2 Knob: Channel 2 level attenuator
- In 3 Jack: Channel 3 input jack
- Out 3 Jack: Channel 3 output jack. Plugging in a cable removes channel 3 from the mixer and allows it to be used as a passive attenuator
- Level 3 Knob: Channel 3 level attenuator
- In 4 Jack: Channel 4 input jack
- Mix (3+4) Out Jack: Main mixer output
- Level 4 Knob: Channel 4 level attenuator