Description

The Selecta has 4 channels of OR Combiner and 4 channels of A/B Switch. This new version has a reversible panel, so the switches can be placed on either the left or the right side of the module.

The upper A/B Switch section has 4 channels with a 3-way switch pre channel. The switch selects between A and B jacks and the middle position of the switch is a mute. The inputs will work with any kind of signal (cv or audio) and each channel is bidirectional, so can be used with 2 input signals and 1 output or 1 input signal and 2 outputs.

The lower OR Combiner section is conceived to select or sum trigger and/or gate signals, each channel has 2 inputs (A & B) and one output. A 3-way switch selects which signal will be sent to the output of each channel, when the switch is in its middle position the output will be the sum of both inputs. The combiner could be used with other type of signals aprt from gates/triggers, but only the positive part of the signal will be present at the output stage (with a small lack of voltage because of the diodes and the pulldown resistor), so this section can work with envelopes for example. With bipolar voltages the OR COMBINER channels will work as a Half-wave rectified output (the negative half of the signal is clipped to 0V) This can add many harmonics to audio signals, and combining 2 oscillators at the inputs can give a kind of ‘ring modulator’ effect.

Note: This is the latest revision – redesigned to avoid any bleeding between jacks.

Selecta – Build Document

Specs:

• Width: 8HP
• Depth: 12mm
• Power: Passive (does not draw current)