1F (Voltage Controlled Switch)

£82.00 (£68.33 ex VAT)

Voltage controlled switch, designed with a focus on working with sequences – by giving them some randomness, applying transpositions or constant variation over time. You can take 2 input signals and switch between them upon receipt of a gate. You can also switch between one signal and the SUM of both signals …and you can also manually bypass the switching completely.

In stock

SKU: 1f-voltage-controlled-switch Categories: , ,

Description

The Transient Modules 1F is a voltage controlled switch, intended to be ‘one friend’ for your sequencer.

Its design has been specially focused on working with sequences, by giving them some randomness, applying transpositions or constant variation over time. For this, 0.1% tolerance resistors have been used to achieve exact unitary gains for precision summing of the v/oct signals.

You can take 2 input signals and switch between them upon receipt of a gate. You can also switch between one signal and the SUM of both signals …and you can also manually bypass the switching completely.

Main Interface:

  • CV1 – the input for your “main” input signal (ie: sequencer 1)
  • CV2 – the input for your secondary input signal (ie: sequencer 2)
  • CTRL – gate input to control the switching. This input has been designed to work with gates, but any type of CV signal can be used. There is a transistor acting as a comparator on its input, which means that once a certain voltage threshold has been passed, the input “sees” this as a high (sustained) gate, until the voltage drops below this threshold again. 
  • OUT – output for the switched signal – the precise nature of which is determined how the toggle switches are set. See below…
  • CV2 control – allows for scaling/ attenuation of the CV2 input. This also generates up to 3v DC offset if nothing is connected to the CV2 input. However, this is only sent to the output when the CTRL input is high.

Toggle Switches:

When the gate into the CTRL input is high (ie: while the gate is sustained), the following happens:

+ / II

  • When set to “II” the module behaves exactly like a normal voltage-controlled switch – the output switches  from your main CV1 signal to that present at the CV2 input. When the gate goes low it switches back again.
  • When set to “+” the output of inputs CV1 & CV2 is summed. You could think of it as a Precision Adder (or Unity Mixer) that only works when a gate is present at the CTRL input. It can also be used to transpose sequences, or offset voltages.

N / Y

  • When set to “N” this essentially bypasses the switching completely. So if you wanted to patch up some complex  switching, but didn’t want it happening ALL the time, you can quickly turn it off  with this manual toggle switch.
  • When set to “Y” the switching occurs, and the type of switching is controlled by the “+ / II”switch above.

Patch Ideas:

  • 1 – Gated External Transposer: Set top switch to “+” and lower switch to “Y”. Input a slow sequence into CV2 and use it to offset/ transpose a faster “main” sequencer (patched into CV1). This transposing will only occur when a gate is present in the CTRL input.
  • 2 – External Transposer/ Precision Adder: If you don’t want the transposing/ offsetting in Patch 1 to be dependent on a gate, simply input a positive DC offset from another module – such as Mutable Instruments’ SHADES – into the CTRL input instead, and the summing of both CV1 & CV2 will constantly be active. Your 1F is now also a 2-channel Precision Adder (or “Unity Mixer”).
  • 3 – External transposer with manual bypass: Set up Patch 2. Every time you set the bottom toggle switch to “N” you can bypass the transposition/ offsetting.
  • 4 – INTERNAL transposer/ offset-generator: Set up Patch 2, but disconnect the sequence coming into CV2, leaving nothing plugged into it this socket. Although there is no signal coming into CV2, the CV2 generates up to +3v DC offset, which will be summed with CV1 as long as CTRL is high (active). The external offset you already have plugged into the CTRL input will keep the summing of the two inputs active. To switch the transposing/ offsetting on & off, simply use the “N/Y” switch below.

Some of these look & sound complicated on paper, but once you try a couple of ideas it soon falls into place!

Width: 4hp
Depth: 27mm
Power: 15mA @ +12V @ / 10mA @ -12V

More detailed info is available in the demo video below, although please note:

  • Panel labelling is now different, so SCALE is now called “CV2” and IN is now called “CV1”
  • Also, modules which are not sharing a common clock/ sync source have been used at points, which accounts for some of the switching sounding a little “glitchy” in places