Universal Car Stereo Rear-Fire Sealed Single 12" Sub Box + Harmony HA-R124 12" Sub, Kicker CX300.1 Amp, HA-AK10 Kit & CXA400.1

Package contents: Rear-fire single 12" sealed subwoofer enclosure (unloaded), Harmony Audio HA-R124 12" Rhythm Series sub (single 4 ohm), Kicker CX300.1 CX Series Class D subwoofer amplifier, and Harmony Audio HA-AK10 10 gauge 600 Watt amp installation kit (nickel finish). Rear-Fire Single 12" Sealed Subwoofer Unloaded Enclosure Sub Box: Built for a rear-fire 12" woofer in a sealed configuration. Mounting Depth: 10-1/2". Internal Air Space: 0.90 Cubic Feet. Sealed enclosure exterior dimensions: Width 15-1/2" x Height 13". Depth measurements: Depth One 10-1/4" x Depth Two 12-3/4". Harmony Audio HA-R124 Car Stereo Rhythm Series 12" Subwoofer (Single 4 Ohm): Power handling — Peak: 600 watts, RMS: 300 watts. Sensitivity: 88.2 dB. Frequency response: 27 Hz - 1.8 kHz. Mounting depth required: 5 11/16". Mounting cutout diameter: 11 1/8". Kicker CX300.1 Car Audio CX Series Class D Subwoofer Amplifier — 600 Watt Sub Amp (limited stock): Output ratings — 4 ohms: 150 watts x 1 channel; 2 ohms: 300 watts x 1 channel. Maximum power output: 600 watts x 1 channel. Tone and filter controls include variable bass boost (0 to +12 dB at 40 Hz), variable low-pass filter (50–200 Hz, 12 dB/octave), and a subsonic filter (24 dB at 25 Hz). Frequency response: 25–200 Hz. Physical size: 7-3/16" W x 8-1/8" D x 2-3/8" H. Harmony Audio HA-AK10 Car 10 Gauge 600 Watt Amp Kit (Nickel Finish): Complete 10 gauge installation kit rated for 600 Watt systems, nickel finish hardware included. This bundle provides a compact sealed rear-fire enclosure paired with a 12" 4-ohm subwoofer and a compact Class D amplifier, plus the 10 gauge kit required for installation. All specifications and dimensions above are provided to ensure fitment and performance compatibility.