2002-2013 GMC Sierra HD Crew / Chevy Avalanche Dual 12" Harmony HA-R124 Sub Box + Kicker CX300.1 & CXA400.1 Amp

Package contents: - 1 x 2002-2013 Chevy Avalanche Car Audio Custom Dual 12" Subwoofer Enclosure (fits select 2002-2013 GMC Sierra HD Crew / Chevy Avalanche applications) - 2 x Harmony Audio HA-R124 Rhythm Series 12" Single 4 Ohm subwoofers (600 Watt peak / 300 Watt RMS each) - 1 x Kicker CX300.1 Class D Subwoofer Amplifier (600 Watt max) - x Harmony Audio HA-AK10 Car 10Gauge 600 Watt Amp Kit Enclosure details: - Type: Sealed custom dual 12" enclosure built for under-rear-seat installation (seat must fold forward to install) - Air space: 0.48 Cubic Feet per sub - Mounting depth (enclosure): 4 1/2" - External dimensions: Width 48" x Height 6" x Depth 16-3/4" - Sub orientation: Subwoofers fire up toward the rear seat Harmony HA-R124 subwoofer specifications: - Power handling: Peak: 600 watts / RMS: 300 watts - Sensitivity: 88.2 dB - Frequency response: 27 Hz - 1.8 kHz - Mounting depth: 5 11/16" - Mounting cutout diameter: 11 1/8" Kicker CX300.1 amplifier specifications: - Single-channel RMS power rating: 4 ohms: 150 watts x 1 chan.; 2 ohms: 300 watts x 1 chan. - Max power output: 600 watts x 1 chan. - Variable low-pass filter: 50 - 200 Hz, 12 dB/octave - Frequency response: 25 - 200 Hz Notes: - This package provides a sealed dual-12 solution sized to sit under the rear seat (seat must fold forward for fitment). - Includes Harmony Audio wiring kit for installation. Limited stock for the Kicker CX300.1 amplifier.