1999-2006 GMC Sierra Ext Cab Dual 12" Sub Box with Harmony R124 Subs & CXA400.1 Amp

Package Includes: 1 x Custom Dual 12" 99-06 Chevy Silverado Extended Cab Subwoofer Box 2 x Harmony Audio HA-R124 Car Stereo Rhythm Series 600 Watt Single 4 Ohm 12" Sub 1 x Kicker CX300.1 Car Audio CX Series Class D Subwoofer Amplifier 600 Watt Sub Amp 1 x Harmony Audio HA-AK10 Car 10 Gauge 600 Watt Amp Kit - Nickel Finish Custom Dual 12" 99-06 Chevy Silverado Extended Cab Subwoofer Box: - Dual 12" Chevy 99-06 Extended Cab Sub Box - Air Space: 0.95 Cubic Feet - Mounting Depth: 5-3/4" - Sealed Enclosure - Dimensions: Width 51" x Front Height 9-3/4" x Rear Height 7-1/4" x Depth 13-1/2" - Installs under rear seat, downfiring design Harmony Audio HA-R124 Car Stereo Rhythm Series 12" Sub (each): - Power Handling: Peak: 600 watts, RMS: 300 watts - Impedance: Single 4 Ohm - 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 Car Audio CX Series Class D Subwoofer Amplifier 600 Watt Sub Amp - Limited Stock: - RMS Power Rating: 4 ohms: 150 watts x 1 chan. | 2 ohms: 300 watts x 1 chan. - Maximum Power Output: 600 watts x 1 chan. - Variable low-pass filter: 50-200 Hz, 12 dB/octave - Subsonic filter: 24 dB at 25 Hz - Frequency response: 25-200 Hz - Dimensions: 7-3/16" W x 8-1/8" D x 2-3/8" H Harmony Audio HA-AK10 10 Gauge Amp Kit: - 10 gauge wiring kit rated for 600 watts - Nickel finish hardware This bundle delivers a vehicle-specific sealed downfiring box engineered for 1999-2006 Chevy Silverado extended cabs (fits under the rear seat) paired with two Harmony HA-R124 12" subs, a Kicker CX300.1 Class D sub amp, and a complete 10-gauge Harmony HA-AK10 installation kit.