This Package Includes the Following Items:
1 x GMC Envoy 02-09 12" Sub Box Enclosure
1 x Kicker 43C124 12" Comp C12 Series Sub 150W RMS 4 Ohm SVC Car Subwoofer
1 x Harmony Audio HA-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer Amplifier - 1 Ohm Stable - Includes Bass Remote
1 x Harmony Audio HA-AK4 Car 4 Gauge Amp - Nickel
GMC Envoy 02-09 12" Sub Box Enclosure:
Features:
Chevy Trailblazer 02-09 12" Subwoofer BoxAir Space: 0.80 Cubic Feet
Mounting Depth: 6-1/4"
Sealed Enclosure
Dimensions: Bottom Width 24-1/4" x Top Width 11" x Height 13-1/2" x Depth 6-5/8"

Constructed with High Quality MDF
High Quality Black Carpet
Enclosure installs on passenger sidewall in rear cargo area
This box fits:
2002 - 2009 Chevy Trailblazer

Kicker 43C124 12" Comp C12 Series Sub 150W RMS 4 Ohm SVC Car Subwoofer:
Size: 12"
Impedance: 4 Ohms SVC
Power Watts: 300W Peak / 150W RMS
Sensitivity: 88.3 dB
Freq. Response: 27-500 Hz
Mounting Depth: 5-7/8"
Mounting Diameter: 11"

Harmony Audio HA-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer Amplifier - 1 Ohm Stable - Includes Bass Remote:
Specifications:
Power Handling:
14.4V @ 1 Ohm
400 Watts RMS x 1
800 Watts PEAK x 1
14.4V @ 2 Ohm
300 Watts RMS x 1
600 Watts PEAK x 1
Frequency Response: 10Hz-180Hz
Turn On: DC Offset or 12V Remote
Features:
Includes Remote Bass Control Knob with Power Indicator LED
Includes HA-EASY Speaker Wire to RCA Adapter to Simplify Installation