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A black rectangular powered subwoofer enclosure and a small wiring adapter with RCA connectors

KICKER

KICKER 51HS12 12-Inch Powered Subwoofer with 46KISL Interconnect Adapter

SKU CH-J938-KDQQY

A compact powered 12-inch subwoofer with 230W RMS fits under the seat and includes a speaker-wire-to-RCA adapter for simple factory integration

  • Product typeSubwoofers
  • Powered 12-inch subwoofer delivers 230W RMS bass impact
  • Compact 3-1/2" height fits neatly under vehicle seats
  • FIT+ inputs accept 0.25V to 40V signals for wide compatibility
  • Remote bass control lets you adjust levels from the driver's seat
  • 46KISL adapter converts speaker wire to RCA without a line output converter

Compact 12-inch powered subwoofer bundle

The Kicker 51HS12 Hideaway pairs a 12-inch driver with a built-in 230W RMS amplifier in a 3-1/2-inch high enclosure that slides under a seat. A Kicker 46KISL speaker-wire-to-RCA adapter is included for factory stereo integration. The system targets drivers who want noticeable bass without sacrificing cabin space or running a separate amp and box.

230W RMS output and FIT+ input range

The amplifier delivers 230W RMS and accepts signals from 0.25V up to 40V through its FIT+ wide-range inputs, covering both low-level and high-level factory sources. Adjustable low-pass crossover, subsonic filter and KickEQ boost let you shape the response, while a wired remote bass knob provides level control from the driver’s seat. Output headroom suits music at moderate volumes; sustained high-SPL competition use will exceed the amplifier’s thermal limits.

Under-seat footprint with dual-sub expandability

The shallow 3-1/2-inch height fits beneath most front seats, and the package includes mounting hardware for a secure install. The 46KISL adapter uses 16-gauge silver-tinned OFC wire, split-pin RCAs and K-Grip dual-mold connectors to simplify tapping factory speaker leads without a separate line-output converter. A phase switch and auto turn-on options ease integration, and the enclosure is designed to accept a second HS12 for increased output when space and electrical supply allow.

How it compares

Measured against everything we stock in Car Subwoofers & Enclosures, at today’s prices. Recalculated every night.

Price $369.99
Pricier than about 69% of the 268 comparable items (median $185.49).

Specifications

Product
Product typeSubwoofers

Questions about this item

Will the 51HS12 draw signal from my factory head unit without a separate line-output converter?

The included 46KISL adapter converts speaker-level outputs directly to RCA so the subwoofer's FIT+ input accepts 0.25 V to 40 V from the factory wiring.

How can I verify the 51HS12 is powered and passing audio after installation?

The remote bass knob LED lights when the auto turn-on detects signal; adjust the knob and listen for low-frequency output from the 12-inch driver.

What comes in the box and what must I supply myself?

Box contains the 51HS12 powered enclosure, 46KISL speaker-wire-to-RCA adapter, remote bass control and mounting hardware; you provide 16-gauge power and ground leads plus a fuse holder.

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