KOMA Elektronik announced today that the Poltergeist Quadraphonic Audio Mixer for Eurorack systems is in production and has begun shipping.
The new Poltergeist Eurorack module lets you manipulate up to four audio / CV signals quadraphonically or stereophonically, in what Koma Elektronik is calling “new and ghostly” ways.
The module lets you mix and control signals quadraphonically with its 21 ins and outs, 48 SSM VCAs and unique hands-on mixing features.
The four channels of the Poltergeist each include a VCA with CV input, performance-oriented “clickless” solo and mute switches that engage upon release for perfect timing, pan with CV input over the entire 360°, a Field knob to add an inverted version of the signal to all mixer outputs, an Origin knob to control pan modulation from the Master Origin CV input, and an input with Gain control. Spatial animation is easily achieved by adjusting these parameters along with outside CV control from other modulation sources.
The Poltergeist can, with the flip of a switch, work as a stereophonic mixer as well. In the master section are 4 mixer outputs dedicated to each quadrant, or left and right, depending on which mode the mixer is in. There is also an auxiliary stereo input going directly to the summing bus (pre master VCA). The user can create his/her own compressor by using another module, like an envelope or comparator, into the Master Gain CV Input, a half-rectified, inverted CV input where positive CV reduces the Master Gain and negative CV is ignored. At the end there is the Master Gain knob to control overall volume.
Pan position is “highly” controllable on an individual level for each channel. Slope (also controllable via CV) controls the curve of the pan: on one end the signal remains at one output for a long time then quickly jumps to the next; while on the other end, the signal stays at the output for a shortage before it slowly begins moving to the next. Shift each or all channels’ pan positions from 100% to 0% to -100% with the Master Origin CV input. By adjusting each attenuverter on each channel, complex choreographies are possible.
The Poltergeist measures at 28HP wide.
Additional technical specifications and product information can be found in the Poltergeist user manual. Koma Elektronik has also published a short series of videos detailing patch-making on the Poltergeist on YouTube.
Pricing and Availability
The Poltergeist is available now via KOMA Elektronik’s website and from select retailers worldwide for a suggested retail price of $850 US.