Polk Car Audio - PAD4000.4

Super Efficient Class D Bridgable 4-channel Mobile Audio Amplifier


This is How You Build a Really Cool Amplifier



The PAD4000.4 amplifier is capable of bridging two full-range channels into a single full range channel with higher output power. For instance, one front and one rear channel will increase the output power from 125W per channel to 400W per channel (for a 4 ohm load). The most common hookups for the PA D4000.4 would be four full-range channels, two full-range channels and a bridged sub, or two bridged subwoofers.



Amplifier Power Specs RMS Power:
  • at 14.4V Watts per channel bridged - 4 ohms 400 watts
  • at 14.4V Watts per channel NOT bridged @ 1 kHz - 2 ohms 200 watts
  • at 14.4V Watts per channel NOT bridged @ 1 kHz - 4 ohms 125 watts

  • Amplifier Specs:
  • 12V & Ground Cable Gauge 4AWG
  • Channel NotesBridgeable Class D MOSFET
  • Channels: 4

  • Dimensions
  • Product Weight (each): 5.0 lbs. pounds
  • Cabinet Dimensions - Depth: 6 3/4" (17.14cm)
  • Cabinet Dimensions - Height: 1 13/16" (4.60cm)
  • Cabinet Dimensions - Width: 10 15/16" (27.78cm)
  • Without Panels - Depth: 6 3/4" (17.14cm)
  • Without Panels - Height: 1 13/16" (4.60cm)
  • Without Panels - Width: 10 15/16" (27.78cm)

  • Electrical
  • Distortion at Rated Power
  • Effective Damping Factor >100
  • Max Sensitivity 200mV-6V dB
  • Minimum Impedance Bridged 4 ohms
  • Minimum Impedance Not Bridged 2 ohms
  • Protection Circuitry Thermal, DC offset, reverse DC voltage and short circuit; fuses: one 40 Amp and one 35 Amp ATC
  • Signal-to-noise (Referenced to rated power) 105 dBA
  • Total Frequency Response 20Hz-20kHz
  • High Pass Filter - Filter Frequency 20Hz-4kHz (front)/20Hz-4kHz(rear)
  • High Pass Filter - Filter Slope 12dB/octave
  • Low Pass Filter - Filter Frequency 50Hz-5kHz(front)/50Hz-5kHz(rear)
  • Low Pass Filter - Filter Slope 12dB/octave
  • Available in:
    Size: Sold as Singles

    MSRP: $550.00 CAD

    Super Efficient Class D Bridgable 4-channel Mobile Audio Amplifier

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