2014-2018 Chevy Silverado / GMC Sierra Crew Cab Single 10" Sub Box w/ Harmony HA-R104, Kicker CX300.1 600W Amp & HA-AK10 Kit

Complete single 10" sealed subwoofer package engineered for 2014-2018 Chevy Silverado Crew Cab (fits under rear seat, downward-firing) — also compatible with GMC Sierra Crew Cab models from the same years. This kit includes a custom under-seat sub enclosure, a Harmony Audio HA-R104 Rhythm Series 10" sub, a Kicker CX300.1 CX Series Class D monoblock amplifier (600W max), and a Harmony HA-AK10 10-gauge nickel amp install kit rated for 600W. Enclosure (custom fit for 14-18 Chevy Silverado Crew Cab Truck): - Configuration: Single 10" sealed subwoofer enclosure, installs under the rear seat with downward-firing sub - Mounting depth: 6-1/2" - Internal air space: 0.74 cubic feet (sealed) - Construction: High-quality MDF with high-quality black carpet finish - Terminal: High quality twist knob / banana plug terminal cup (bare wire up to 10GA) - Overall dimensions: 24-3/4" L x 16-1/2" W x 9-3/4" H Harmony Audio HA-R104 Rhythm Series 10" Subwoofer: - Power handling: Peak 500 watts, RMS 250 watts - Sensitivity: 86.1 dB - Frequency response: 30 Hz - 1.5 kHz - Mounting depth: 5 5/16" - Mounting cutout diameter: 9 1/4" - Box volume recommendations: - Min sealed box volume: 1.0 cubic feet - Max sealed box volume: 2.46 cubic feet - Min vented box volume: 1.18 cubic feet - Max vented box volume: 1.97 cubic feet Kicker CX Series Single-Channel Class D Amplifier (CX300.1): - RMS power: 150 watts x 1 @ 4 ohms; 300 watts x 1 @ 2 ohms - Max power output: 600 watts x 1 - Power supply: Pulse Width Modulated MOSFET - LED indicators: Power (green) and Protect (red) - Variable bass boost: 0 to +12 dB @ 40 Hz - Filters: Variable low-pass (50-200 Hz, 12 dB/octave); Subsonic filter (24 dB at 25 Hz) - Input options: Speaker-level (high-level) inputs with signal sensing for automatic turn-on; Nickel-plated RCA level inputs - Preamp RCA outputs for daisy-chaining multiple amps - Protections: 3-way circuitry (thermal, overload, speaker short protection) - Terminals: Nickel-plated screw terminals; dual speaker terminals for simplified multiple-speaker hookup - Chassis: Heavy-duty aluminum alloy heat-sink - Input sensitivity: Low level 125 mV - 5 V; High level 250 mV - 10 V - CEA-2006 compliant - Frequency response: 25 - 200 Hz - Installation note: Requires 8 gauge power and ground wiring - Dimensions: 7-3/16" W x 8-1/8" D x 2-3/8" H Harmony HA-AK10 Install Kit: - Complete 10 gauge amp install kit, nickel-plated hardware, rated for 600W amplifier installations Package notes: Limited stock for the amplifier. The enclosure is purpose-built from high-quality MDF and carpeted to match OEM-style under-seat placement. All technical specifications and measurements are provided to ensure proper fitment and electrical compatibility with the listed vehicles.