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Black rectangular car monoblock amplifier with silver heatsink fins and terminal block

Skar Audio

Skar Audio RP-3500.1D 5500W Max 3500W RMS Monoblock Amplifier

SKU CH-KSF3-7K55F

A Class D monoblock subwoofer amplifier delivering 3500 watts RMS at 1 ohm and 5500 watts max with four-way protection circuitry

  • TypeAmplifier Installation Kits
  • Delivers 3500 W RMS at 1 ohm for serious bass output
  • Handles 5500 W peak power for competition-level performance
  • 1-ohm stable design extracts maximum power from subwoofer loads
  • Four-way protection guards against thermal, voltage, speaker and DC faults
  • Oversized 1/0-gauge terminals enable maximum current flow for efficient operation

Competition-Grade Monoblock Amplifier

The Skar Audio RP-3500.1D is a Class D monoblock subwoofer amplifier built for competition-grade output. It delivers 3,500 watts RMS at 1 ohm and 5,500 watts max power at 14.4 volts. The 1-ohm stable design suits serious audiophiles driving high-performance subwoofer systems.

Upgrading From Smaller Amplifiers

This unit replaces lower-wattage monoblocks when your subwoofers demand more current than a 1,200-watt RMS at 4 ohms or 2,300-watt RMS at 2 ohms amplifier can supply. The jump is worth it when you need 3,500 watts RMS at 1 ohm or plan to strap two units for 7,000 watts RMS at 2 ohms.

Installation And Common Issues

Oversized 1/0-gauge power and ground terminals accept thick wiring for maximum current flow. The advanced PCB layout and high-speed MOSFET power supply simplify the build. Four-way protection circuitry guards against thermal, voltage, speaker and DC faults. Improper impedance matching or insufficient electrical charging often causes shutdowns.

Highlights

  • Delivers 3500 W RMS at 1 ohm for serious bass output
  • Handles 5500 W peak power for competition-level performance
  • 1-ohm stable design extracts maximum power from subwoofer loads
  • Four-way protection guards against thermal, voltage, speaker and DC faults
  • Oversized 1/0-gauge terminals enable maximum current flow for efficient operation

Specifications

TypeAmplifier Installation Kits

Questions about this item

What gauge power and ground cables does the RP-3500.1D require for installation?

The amplifier uses oversized 1/0-gauge power and ground terminals to allow maximum current flow for its 3,500 watt RMS output at 1 ohm.

How do you correctly set the gain on this 3,500 watt RMS monoblock to avoid clipping?

Use a digital multimeter or oscilloscope to match the amplifier's output voltage to your subwoofer's RMS rating at 14.4 volts, rather than turning the gain knob by ear.

When should the internal protection circuitry be expected to activate on this Class D amplifier?

The four-way protection circuit engages automatically during thermal overload, DC offset detection, speaker short circuits, or voltage drops below safe operating thresholds.

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