RP221 Bottom Feeder Subwoofer Generator w/Sonic Exciter

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Modern DJ and karaoke applications desire all the low end thump-and-bump and crisp high-end they can get, with special attention paid to sound clarity. The RP221 processes the sound with Rolls unique Spectrum Correction Encoding circuitry, and feeds the outputs with a variable crossover for complete control over the final sound. CAUTION: TO AVOID POSSIBLE SPEAKER OR AMPLIFIER DAMAGE, ALWAYS TURN ON THE RP221 AND OTHER PERIPHERAL EQUIPMENT BEFORE TURNING ON THE POWER AMPLIFIERS. ALSO TURN OFF THE POWER AMPLIFIERS FIRST, BEFORE TURNING OFF THE RP221 AND OTHER EQUIPMENT.

RP221 Bottom Feeder Subwoofer Generator w/Sonic Exciter

  • ROLLS SCE Processing
  • Electronic Crossover
  • Subsonic Synthesizer
  • Stereo RCA Inputs
  • Stereo RCA Loop-through jacks
  • Unbalanced RCA Outputs
  • External PS27 power supply (included) for low noise operation


  • Frequency Response: 20Hz to 40kHz
  • Input Impedance: 10K Ohms unbalanced
  • THD + Noise: <0.07% typical
  • Noise Floor: -78 dB
  • Indicators: Power LED, Clip LED
  • Input/Output jacks: 4: Stereo RCA jacks
  • Power: 12 VDC (Rolls Model PS27)
  • Weight: 4 lbs.