This Package Includes the Following Items1 x 1X12-BLAZER 12" Sub Box Enclosure1 x 43CVT122 12" CompVT CVT12 Series Sub 400W RMS 2 Ohm SVC Car Subwoofer1 x HA-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer Amplifier1 x HA-AK4 Car Stereo Complete 4 Gauge 1800W Amp Amplifier Install Kit43CVT122 12" CompVT CVT12 Series Sub 400W RMS 2 Ohm SVC Car SubwooferImpedance: 2 Ohms SVCPower Watts: 800W Peak / 400W RMSSensitivity: 87.1 dBMounting Depth: 4-3/8"Mounting Diameter: 11"Min Sealed Box Vol: 1.28 cu.ft.Max Sealed Box Vol: 4.6 cu.ft.Min Vented Box Vol: 1.75 cu.ft.Max Vented Box Vol: 2.25 cu.ft.A-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer AmplifierPower Handling:14.4V @ 1 Ohm400 Watts RMS x 1800 Watts PEAK x 114.4V @ 2 Ohm300 Watts RMS x 1600 Watts PEAK x 1Frequency Response: 10Hz-180HzSignal to Noise Ratio: 95dB, A-weightedRCAs: Input and Full Pass Through Audio OutputTurn On: DC Offset or 12V RemoteRecommended External Fuse: 50ARecommended Wiring Power Gauge: 4 GaugeDimensions: 9-3/16" Width x 6-1/8" Width x 2" Height1X12-BLAZER 12" Sub Box EnclosureAir Space: 0.80 Cubic FeetMounting Depth: 6-1/4"Sealed EnclosureDimensions: Bottom Width 24-1/4" x Top Width 11" x Height 13-1/2" x Depth 6-5/8"Constructed with High Quality MDFHigh Quality Binding Terminal Cup (Accepts Banana Terminal Plugs OR Bare Wire 'up to 10GA')High Quality Black CarpetEnclosure installs on passenger sidewall in rear cargo area