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Compact black rectangular car amplifier with bass remote control

NVX

NVX VADM1 500W RMS Class D Monoblock Car Amplifier

SKU CH-3P4C-7QXH6

Delivers 500 W RMS at one ohm in a marine-certified Class D chassis measuring 6.8" × 3.3" × 1.5" with bass remote and speaker-level inputs

  • TypeAmplifiers
  • 500 W RMS at 1 ohm powers demanding subwoofers
  • Compact 6.8" × 3.3" × 1.5" chassis fits tight installations
  • Marine-grade conformal coating withstands moisture and salt
  • Bass remote adjusts 0 to +18 dB at 45 Hz
  • Protection circuitry guards against thermal, short and overload faults

Compact Class D Monoblock

The NVX VADM1 is a micro Class D monoblock amplifier built for car, marine and powersports installations. It delivers 500W RMS at 1 ohm, 320W RMS at 2 ohms and 180W RMS at 4 ohms. Its 6.8"L x 3.3"W x 1.5"H footprint fits tight spaces where larger amps cannot go. The conformally coated circuit board is marine certified for moisture resistance.

Thermals and Protection

Class D topology keeps efficiency high and heat output low during normal listening. A three-way protection circuit guards against thermal, short-circuit and overload events without audible interruption. Balanced differential inputs and speaker-level inputs reject noise from the source unit. The bass remote adjusts boost from 0 to +18 dB at 45 Hz for tonal control.

Sustained Load Behaviour

Under continuous heavy bass the amplifier maintains stable output thanks to its protection circuitry and efficient topology. The marine-grade coating prevents corrosion that could degrade performance over time. LED indicators show power and protection status at a glance. Buyers who need multi-channel amplification or higher RMS power at 4 ohms should consider other configurations.

Highlights

  • 500 W RMS at 1 ohm powers demanding subwoofers
  • Compact 6.8" × 3.3" × 1.5" chassis fits tight installations
  • Marine-grade conformal coating withstands moisture and salt
  • Bass remote adjusts 0 to +18 dB at 45 Hz
  • Protection circuitry guards against thermal, short and overload faults

Specifications

TypeAmplifiers

Questions about this item

How do I mount the 6.8 by 3.3 by 1.5 inch chassis and wire the speaker-level inputs without losing signal?

Mount the micro chassis on any flat surface using the included brackets, then tap the balanced differential speaker-level inputs directly from factory speaker wires — no line-output converter needed — and set the bass remote gain after verifying polarity with a test tone.

What part of the marine-grade circuit board needs periodic attention after salt-spray exposure?

Rinse the conformally coated board with fresh water annually, inspect the power and ground terminals for white corrosion, and re-torque the set-screws to maintain the 500 watt RMS path at 1 ohm.

At what point does the 3-way protection circuitry cut output during a long bass-heavy set?

Thermal protection engages first when the heatsink reaches its limit, followed by short-circuit and over-current guards — the amp mutes until the chassis cools, then restarts automatically.

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