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A compact black powered subwoofer box and small amplifier unit shown together

KICKER

KICKER 51HS12 12-Inch Powered Subwoofer + 47KEY2004 4-Channel DSP Amplifier 200W

SKU CH-GVNG-T9V7H

A 12-inch powered subwoofer rated at 230W RMS pairs with a 4-channel DSP amplifier delivering 50W per channel for a complete 200W system upgrade

  • TypeSubwoofers
  • Big bass impact from compact 12-inch powered subwoofer
  • 230W RMS output drives deep low frequencies
  • 5 lb enclosure fits under seats easily
  • 4-channel DSP amplifier delivers 50W per channel
  • Auto 40-band EQ with microphone tunes sound automatically

Compact 12-Inch Powered Subwoofer Bundle

This bundle combines a Kicker 51HS12 Hideaway Compact Powered Subwoofer with a Kicker 47KEY2004 4-Channel DSP Smart Amplifier. The 12-inch subwoofer delivers 230W RMS power in a slim 3-1/2 inch high enclosure weighing 17.5 lb. The amplifier provides 200W total output across four channels at 50W each. Together they upgrade factory audio systems without requiring extensive vehicle modifications.

230W RMS Subwoofer Output

The 51HS12 subwoofer produces 230W RMS power from its 12-inch driver. This single specification determines the bass impact achievable in the vehicle cabin. The amplifier supplies 50W per channel to drive front and rear speakers separately. System performance hinges on matching these power ratings to the listener's volume expectations and the vehicle's electrical capacity.

Handles Daily Listening, Not Competition SPL

The 230W RMS subwoofer comfortably handles everyday music genres and moderate listening levels in typical passenger vehicles. The 200W amplifier drives four speakers with clean headroom for highway speeds. The combination runs out of headroom for extreme sound-pressure-level competitions or very large cabin volumes requiring multiple high-output subwoofers. Buyers seeking maximum SPL or multi-subwoofer arrays need a different solution.

Highlights

  • Big bass impact from compact 12-inch powered subwoofer
  • 230W RMS output drives deep low frequencies
  • 5 lb enclosure fits under seats easily
  • 4-channel DSP amplifier delivers 50W per channel
  • Auto 40-band EQ with microphone tunes sound automatically

Specifications

TypeSubwoofers

Questions about this item

How much continuous bass power does the 12-inch powered subwoofer deliver in a real install?

The 51HS12 produces 230W RMS from its built-in amplifier, giving strong low-frequency output from a single compact enclosure.

What does the 4x50W rating on the KEY amplifier mean for my speaker wiring?

Each of the four channels supplies up to 50 watts into a 4-ohm load, so you can run front and rear speakers directly without an extra amp.

Will the 3-1/2-inch tall subwoofer enclosure fit under my front seats?

At 3-1/2 inches high and 17.5 lb, the hideaway box is designed to slide beneath most factory seats for a stealth install.

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