Doepfer A-138c Polarizing Mixer

4-Channel mixer for mixing control signals

  • Allows four incoming voltages to be added or subtracted from the output signal
  • Eurorack format
  • Width: 8 HP
  • Depth: 35 mm
  • Power requirements: + 20Ma (+ 12V) / -20mA (-12V)
8 customer ratings:
  • 5
  • 4
  • 3
  • 2
  • 1
4.4 / 5.0
7 written ratings Read all reviews
Total

nice and concise mixer.

Henri aus B., 12.02.2014
this mixer works as you expect, but some minor addition would make much more useful.
for instance some leds to monitor the in and out, and having knobs with a center "click" so that you know you are at the zero position.

also after playing with some make noise module i tend to miss their cleverness. for instance when you unplug one input of such mixer on a make noise, it becomes an offset source, which comes really handy in many cases.

that said, the module follows the doepfer philosophy : make one thing at a time, with a clear and simple approach. in that regard this module is a prefect match !
but i would recommend also looking at other makers of modules that might have complete/complex product.
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Total

Good for CV, bit less for audio

30.03.2015
This module handels cv signals very well, but mixing audio signals is pretty hard.
At the moment I need to, but the problem is that the zero-point is very hard to find, so quickly muting channels is a bit hard.

But the module handels CV very well. It could even actually be seen as an improvement on the offset generator as the first knob can be used as a voltage offset, while the other 4 inputs can still be used to generate offsets and be combined to complex patterns for note-sequences or modulations.

After 1.5 years still no crackles or noises..
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Show variations of this product
Doepfer A-138c Polarizing Mixer
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Doepfer A-138c Polarizing Mixer

4-Channel mixer for mixing control signals Allows four incoming voltages to be added or subtracted from the output signal, Eurorack format, Width: 8 HP, Depth: 35 mm, Power requirements: + 20Ma (+...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-138b
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Doepfer A-138b

Mixer with Logarithmic Potentiometers Primarily suitable for audio signals, Width: 8 HP, Depth: 35 mm, Power requirements: +10 mA (+12 V) / -10 mA (-12 V)

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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  • Empty Rack, Or Housing: No
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  • Accessories: No
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  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-119
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Passive Multi-Port Distributor 8x Interconnected jacks, Sockets are divided into 2x quadruple groups; but can also be modified to an eight-multiple (soldering bridge on the circuit board), Width:...

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  • Basic System: No
  • Accessories: No
Doepfer A-118 Noise/Random
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Noise/Random Voltage Generator Module A-118 is a noise and random voltage generator. It produces the following signals: white noise, coloured noise, and random voltage. White and coloured noise can...

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  • Empty Rack, Or Housing: No
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  • Accessories: No
Doepfer A-110-1
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Doepfer A-110-1

Standard VCO for Modular System A-100Module A-110-1 (VCO) is a voltage controlled oscillator. The A-110-1 produces frequencies in a range of about 8 octaves, of which four waveforms are available...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-140
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ADSR Envelope Generator The module A-140 is a envelope generator and since it delivers control voltages, belongs to the modulation-modules. As soon as the ADSR is triggered at gate-input, it...

  • Module: Yes
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  • Module: Yes
  • Empty Rack, Or Housing: No
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Doepfer A-151
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Doepfer A-151

Quad Sequential Switch Module Electronic 4-position rotary switch, Trigger input, Reset input, 4 Inputs, 4 Outputs, Voltages of -8V to + 8V can be processed, Euro rack format, Width 4 HP, Depth: 35...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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