1999-2006 GMC Sierra Ext Cab Truck Harmony F124 Dual 12" Sub Box & CXA800.1 Amp

This Package Includes the Following Items: 1 x Custom Dual 12" 99-06 Chevy Silverado Extended Cab Subwoofer Box 2 x Harmony Audio HA-F124 Car Stereo Flatline Series 800 Watt Single 4 Ohm 12" Sub 1 x Kicker CX600.1 Car Audio Class D 1200W Sub Amp 1 x Harmony Audio HA-AK8 Car 8 Gauge 900 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" Enclosure installs under rear seat downfiring Harmony Audio HA-F124 Car Stereo Flatline Series 800 Watt Single 4 Ohm 12" Sub: Specifications: 12" Flatline Series Car Subwoofer Power Handling: Peak: 800 watts RMS: 400 watts Sensitivity: 87.3dB Frequency Response: 25Hz-1.2Hz Mounting Depth: 4 1/2" Mounting Cutout Diameter: 11 1/8" Single 4 Ohm Kicker CX600.1 Car Audio Class D 1200W Sub Amp: Specifications: RMS Power Rating: 4 ohms: 300 watts x 1 chan. 2 ohms: 600 watts x 1 chan. Max power output: 1200 watts x 1 chan. Variable Bass Boost (0 to +12 dB bass boost at 40 Hz) Input sensitivity: Low level: 125mV-5V High level: 250mV-10V Frequency response: 25-200 Hz Dimensions: 7-3/16"W x 8-1/8"D x 2-3/8"H