Audio Input: Stereo or Mono RCA in
Bass Level / Volume knob
Subwoofer Crossover Frequency selector knob
Phase Invert toggle
It is able to be used as a passive sub (requiring an external amp), with simple snapping stereo speaker connections, in which case YOU DO NOT want to plug this into the wall.
Rarely used, very well kept
Power Subwoofer Cypress PSW8
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