1999-2006 GMC Sierra Ext Cab Truck — Custom Single 10" Sub Box with Harmony HA-R104 10" Sub & CXA400.1

Package includes: 1 x Custom 10" 99-06 Chevy Silverado Extended Cab Subwoofer Box 1 x Harmony Audio HA-R104 Car Stereo Rhythm Series 500 Watt Single 4 Ohm 10" 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 10" 99-06 Chevy Silverado Extended Cab Subwoofer Box - Designed for single 10" installation in Chevy Silverado extended/extended cab models (1999-2006). - Air space: 0.90 Cubic Feet. Mounting depth: 6". Sealed enclosure. - External dimensions: Width 23-1/2" x Front Height 9-1/2" x Rear Height 7" x Depth 13-1/2". - Installs on the passenger side under the rear bench seat and is down-firing. Harmony Audio HA-R104 Rhythm Series 10" Subwoofer - Model: Harmony Audio HA-R104 Rhythm Series 10" car sub. - Power handling: Peak 500 watts, RMS 250 watts. - Nominal impedance: Single 4 Ohm. Sensitivity: 86.1 dB. - Frequency response: 30 Hz - 1.5 kHz. - Mounting depth: 5 5/16". Mounting cutout diameter: 9 1/4". Kicker CX300.1 CX Series Class D Subwoofer Amplifier - RMS power: 150 watts x 1 @ 4 ohms; 300 watts x 1 @ 2 ohms. Maximum output: 600 watts x 1. - 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 amp wiring kit rated for 600 watt systems. Nickel finish hardware. This bundle supplies a vehicle-specific sealed enclosure, a Rhythm Series 10" subwoofer, a compact Class D sub amplifier, and a complete 10 gauge installation kit — everything needed to add a clean, factory-friendly bass solution to a 1999-2006 Chevy Silverado extended cab.