Plum Audio SWITCH Quick Start Manual

PLUM AUDIO

Thanks for purchasing SWITCH from Plum Audio!

SWITCH is a pair of bidirectional Voltage Controlled Switches with selectable threshold in 1U format.

SWITCH includes two identical switches; each switch has 4 sockets:

Control Input – Connect any voltage source to this input; Gate, CV, LFO or Audio.

Top Single Socket (X) – This is the common Input or Output.

Bottom Switched Double Sockets (A & B) – These are the switchable Inputs or Outputs.

How does SWITCH work:

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Each switch is bidirectional, both the single I/O (X) and the double I/Os (A & B) can be inputs or

outputs. Signal can flow in both directions depending on your patch.

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If the voltage that reaches the control input is LOWER than the threshold – I/O A will connect to the

Single I/O (X) and a pink LED above Socket A will turn on.

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If the voltage that reaches the control input is HIGHER than the threshold – I/O B will connect to the

Single I/O (X) and a light blue LED above Socket B will turn on.

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Control Input of Switch 2 (right section) is daisy chained (normalized) to the Control Input of Switch

1. If nothing is connected to this input - Control Input 1 will control both switches.

On the back of the module there are 2 jumpers for choosing the threshold for each switch. The upper jumper

is for Switch 1 (left section) and the bottom jumper is for Switch 2 (right section).

When the jumper cap is set to the top position (on each of the jumpers) - the threshold is set to around 2.5v

to support CV control by unipolar signals (e.g., gate signals or CV sequencers).

When the jumper cap is set to the bottom position (on each of the jumpers) the threshold is set to 0v to

support CV control by bipolar signals (e.g., LFOs or Oscillators).

You can set different thresholds for each switch (i.e., Right Switch at 0v and Left switch at 2.5v etc.)

Table of Contents

Do you have a question about the SWITCH and is the answer not in the manual?

Page 1 Bottom Switched Double Sockets (A & B) – These are the switchable Inputs or Outputs. How does SWITCH work: ● Each switch is bidirectional, both the single I/O (X) and the double I/Os (A & B) can be inputs or outputs. Signal can flow in both directions depending on your patch. ●...
Page 2 SUB output of the oscillator to Switch 1's Control input, connect Switch 1's Socket A to the left input of your stereo mixer and Switch 2's Socket B to the right input of your mixer. (* Thanks to Tom Barami for this idea).
Page 3 The red stripe of the ribbon cable (-12V side) must be oriented to the same side as the “Red stripe” marking on the header. Use the 4 supplied screws to mount SWITCH to a free 10HP space in the 1U row of your ●...