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Black rectangular car amplifier with silver heat-sink fins and terminal block connections

Nemesis

Nemesis NA-FR1800X5D 200Wx4 5-Channel Class-D Car Amplifier

SKU CH-80T6-6DRQR

Five-channel Class-D amplifier delivering 200W RMS per front channel plus 1,000W RMS for subwoofer at 1 ohm

  • TypeAmplifiers
  • 200 W × 4 channels plus 1,000 W subwoofer channel drives full system
  • Class-D efficiency delivers high power with smart fan cooling
  • 10 Hz – 20 kHz response covers full audible range
  • 100 dB signal-to-noise ratio keeps music clean at any volume
  • Adjustable 15 Hz – 1 kHz high-pass and 80 Hz low-pass filters tune each speaker

Five-channel power

The Nemesis NA-FR1800X5D is a Class-D car amplifier that delivers 200W x 4 plus 1,000W RMS at 1-ohm for a complete system in one chassis. It suits owners who want front, rear and subwoofer channels without stacking multiple amps.

Replacing a multi-amp stack

A single five-channel unit removes the wiring and space penalties of running a separate four-channel amp and a mono block. The jump is worth it when your install has limited room and you need full-range power plus dedicated bass authority from one supply voltage.

Headroom across impedances

At 1-ohm the four main channels hold 200W each while the sub channel reaches 1,000W; at 2-ohm they drop to 130W and 750W, and at 4-ohm to 75W and 450W. The smart cooling fan engages on temperature or audio signal to sustain output, but the 16V maximum supply voltage sets a hard ceiling for high-impedance loads.

Highlights

  • 200 W × 4 channels plus 1,000 W subwoofer channel drives full system
  • Class-D efficiency delivers high power with smart fan cooling
  • 10 Hz – 20 kHz response covers full audible range
  • 100 dB signal-to-noise ratio keeps music clean at any volume
  • Adjustable 15 Hz – 1 kHz high-pass and 80 Hz low-pass filters tune each speaker

Specifications

TypeAmplifiers

Questions about this item

What power and ground cable gauge does the NA-FR1800X5D require for a safe 14.4 V installation?

Use 4 AWG power and ground cables with a fuse near the battery rated for the amplifier's total current draw at 14.4 V.

Which wiring step is most often missed when connecting the five channels and the remote turn-on lead?

Connect the remote turn-on wire so the smart cooling fan activates with the audio signal; otherwise the amp stays in standby and produces no output.

What ongoing maintenance does the smart cooling fan need to keep the amplifier running at 16 V max supply?

Periodically vacuum dust from the fan intake and verify the blades spin freely; a blocked fan triggers thermal protection and shuts the amp down.

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