99-06 Chevy Silverado Ext Cab Custom Dual 12" Sub Box + 2x Harmony HA-R124 12" Subs + Kicker CX300.1 Amp + HA-AK10 Amp Kit

Package contents: 1 x Chevy Subwoofer Box Custom Dual 12" 99-06 Ext Cab; 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. Chevy Subwoofer Box (Custom Dual 12" for 99-06 Extended Cab): Built as a sealed, down-firing enclosure that mounts under the rear seat. 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". Sprayed-on layers provide a durable, long-lasting, water resistant finish. Harmony Audio HA-R124 12" Sub (Rhythm Series): Power handling — Peak: 600 watts, RMS: 300 watts. Voice-coil/load: 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 CX Series Class D Subwoofer Amplifier: RMS power rating — 4 ohms: 150 watts x 1 channel; 2 ohms: 300 watts x 1 channel. Maximum power output: 600 watts x 1 channel. Variable low-pass filter: 50-200 Hz (12 dB/octave). Subsonic filter: 24 dB at 25 Hz. Frequency response: 25-200 Hz. Harmony Audio HA-AK10 Amp Kit: 10 gauge car amplifier installation kit rated for 600 Watt systems, nickel finish.