nano-modules-alt

Nano Modules ALT

Quad VCA

8 HP Eurorack module

ALT is a four-channel linear voltage-controlled amplifier whose cascaded outputs also provide four-channel mixing.

Features

  • Linear VCAs: amplification is directly proportional to the control-voltage input.
  • Four DC-coupled signal inputs accept audio, CV, and trigger signals.
  • Unpatched outputs cascade channels into the following mix stage, while patching an output extracts that channel from the mix.
  • Remember: check ribbon-cable polarity before powering the system; reversing it can damage the module's electronic circuits.

Controls & Jacks (21)

  • Channel 1 CV Attenuverter— Adjusts the amount and polarity of amplitude modulation from Channel 1's CV input.
  • Channel 3 CV Attenuverter— Adjusts the amount and polarity of amplitude modulation from Channel 3's CV input.
  • Channel 1 Gain— Sets Channel 1's initial amplification bias; 5 V provides unity gain.
  • Channel 3 Gain— Sets Channel 3's initial amplification bias; 5 V provides unity gain.
  • Channel 2 Signal Output— Channel 2 signal output. When unpatched, its signal is cascaded to Channel 3's mix input.
  • Channel 2 CV Attenuverter— Adjusts the amount and polarity of amplitude modulation from Channel 2's CV input.
  • Channel 2 Gain— Sets Channel 2's initial amplification bias; 5 V provides unity gain.
  • Channel 2 Signal Input— DC-coupled signal input for Channel 2; accepts audio, CV, and trigger signals.
  • Channel 3 Signal Output— Channel 3 signal output. When unpatched, its signal is cascaded to Channel 4's mix input.
  • Channel 3 Signal Input— DC-coupled signal input for Channel 3; accepts audio, CV, and trigger signals.
  • Channel 4 Signal Output— Channel 4 signal output. With Outputs 1–3 unpatched, it carries the sum of all four channels.
  • Channel 4 Signal Input— DC-coupled signal input for Channel 4; accepts audio, CV, and trigger signals.
  • Channel 4 CV Input— CV input for Channel 4 gain, normalled to an internal 5 V source when unpatched.
  • Channel 2 CV Input— CV input for Channel 2 gain. Its voltage is summed with the gain bias; the VCA is fully open at 5 V and clips above that level.
  • Channel 1 CV Input— CV input for Channel 1 gain. Its voltage is summed with the gain bias; the VCA is fully open at 5 V and clips above that level.
  • Channel 1 Signal Input— DC-coupled signal input for Channel 1; accepts audio, CV, and trigger signals.
  • Channel 3 CV Input— CV input for Channel 3 gain. Its voltage is summed with the gain bias; the VCA is fully open at 5 V and clips above that level.
  • Channel 1 Signal Output— Channel 1 signal output. When unpatched, its signal is cascaded to Channel 2's mix input.
  • Channel 1 Level Indicator— Indicates Channel 1 signal level.
  • Channel 2 Level Indicator— Indicates Channel 2 signal level.
  • Channel 3 Level Indicator— Indicates Channel 3 signal level.

How-To Guides

  • Make a four-channel mix

Explore the interactive ALT panel on BleepDex — tap any control to learn what it does.

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