Expert Sleepers Pandora

'Pandora' is a bandpass filter/distortion processor, based on an unusual combination of power MOSFET transistors and vactrols. Voltage control is provided over the two sides of the filter, the gain, and the filter feedback. A wet/dry mixer is provided, also under voltage control.

A range switch is provided to drop the filter response several octaves, at which point the module becomes capable of synthesising percussion sounds when fed trigger pulses.

The module is 100% analogue.

Pandora's specifications are as follows:

• Panel width: 8HP


• Module depth: 42mm


• Current draw: 69mA on the +12V rail, 58mA on the -12V rail


• Inputs:
  
  
  
  • CV inputs for filter Alpha, filter Beta, gain, feedback, and mix
  
  
  • Audio input
  
  
  
  


• Outputs:
  
  
  
  • Audio output
  
  
  
  

The vactrols used in Pandora are compliant with RoHS legislation.