The Kicker 51HS8 is a compact powered subwoofer from the Hideaway Series featuring an 8" woofer and a built-in 150W RMS amplifier making it ideal for tight spaces like under car seats. This subwoofer is highlighted in our article "Best Car Powered Subwoofers for 2024" and offers a ...The Kicker 51HS8 is a compact powered subwoofer from the Hideaway Series featuring an 8" woofer and a built-in 150W RMS amplifier making it ideal for tight spaces like under car seats. This subwoofer is highlighted in our article "Best Car Powered Subwoofers for 2024" and offers a frequency response of 25-120 Hz for deep clear bass.
It includes an adjustable low-pass crossover (50-120 Hz) and a high-pass crossover set at 25 Hz for cleaner sound. The variable phase control (0 or 180) allows for fine-tuning sound timing while the bass boost control (0dB to +6dB) enhances low-end performance. The Kicker 51HS8 features speaker-level inputs with a preamp-level input available via an optional adapter (sold separately).
An auto turn-on switch adds convenience and a wired remote is included for easy bass level control. The enclosure is sealed with an aluminum finish and a metal mesh grille and it includes a quick-disconnect plug for easy installation. The subwoofer's controls include an auto turn-on switch with +12V and DC options an input level switch for high and low signals a phase switch a bass boost dial a crossover frequency dial and a gain dial.
Connections are made via a quick-connect harness with power ground remote turn-on and signal input wires. The remote bass control connects via a 3.5mm mini-jack and a 10-amp ATO fuse is installed in the chassis. The Kicker 51HS8 replaces the Kicker 11HS8 and is perfect for those seeking a powerful yet compact subwoofer solution.