2014-2018 Chevy Silverado Double Cab Single 12" Under-Seat Sub Box Kit — Harmony HA-F124 12" 800W (4Ω) + Kicker CX300.1 600W Amp + HA-AK10 Install Kit

Complete under-seat single 12" subwoofer package engineered for the 2014-2018 Chevy Silverado Double Cab. This kit bundles a pre-built sealed sub enclosure sized to fit under the rear seat, a Harmony HA-F124 Flatline 12" sub, a Kicker CX300.1 CX Series Class D amplifier, and a Harmony HA-AK10 10-gauge install kit. Included items: - 1 x 2014-2018 Chevy Silverado Double Cab Truck Single 12 Sub Box Subwoofer Enclosure - 1 x Harmony Audio HA-F124 Car Stereo Flatline Series 12" Sub 800W Single 4 Ohm Subwoofer - 1 x Kicker CX300.1 Car Audio CX Series Class D Subwoofer Amplifier 600 Watt Sub Amp - Limited Stock - 1 x Harmony Audio HA-AK10 Car Stereo Complete 10 Gauge 600W Amp Amplifier Install Kit - Nickel Enclosure details: - Purpose-built for 2014-2018 Chevy Silverado Double Cab trucks; installs under the rear seat with the sub firing downward - Mounting Depth: 5-1/2" - Air Space (sealed): 0.55 Cubic Feet - Sealed enclosure design - Constructed from high quality MDF - High quality twist knob / banana plug terminal cup (Bare Wire 'up to 10GA') - High quality black carpet finish - Overall Dimensions: 28-3/4" L x 14-3/4" x 9-3/4" H Harmony HA-F124 12" Flatline Subwoofer specifications: - 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" - Enclosure Recommendations: - Min Sealed Box Volume (Cubic Feet): 0.55 - Max Sealed Box Volume (Cubic Feet): 3 - Min Vented Box Volume (Cubic Feet): 1.68 - Max Vented Box Volume (Cubic Feet): 2.25 Kicker CX300.1 CX Series single-channel Class D amplifier: - RMS Power Rating: 4 ohms: 150 watts x 1 channel; 2 ohms: 300 watts x 1 channel - Max power output: 600 watts x 1 channel - Single 4 Ohm CX Series Single-Channel Class D Car Amplifier Install kit: - Harmony Audio HA-AK10 10 Gauge 600W Amp Amplifier Install Kit — Nickel This package provides a compact, factory-fit sub solution with matched amplification and a full install kit for the 2014-2018 Chevy Silverado Double Cab, giving a clean under-seat installation and robust low-frequency output.