2015–2023 Ford Mustang Coupe Dual 12" Custom Sub Box with 2× Harmony HA-R124 Subwoofers, Kicker CX300.1 600W Class D Amp & Harmony HA-AK10 10GA Kit

Complete audio package built for 2015 - 2023 Ford Mustang Coupe: custom dual 12" sealed sub enclosure, two Harmony Audio HA-R124 12" Rhythm Series subwoofers, Kicker CX300.1 single-channel Class D sub amp (600W max) and a Harmony HA-AK10 complete 10 gauge 600W amplifier install kit (nickel). Limited stock on the amplifier. Custom Dual 12" Subwoofer Enclosure (fits trunk; subs face rear): Constructed from high quality MDF and covered in high quality black carpet. Mounting Depth: 9". Air Space: 0.90 Cubic Feet per Sub (sealed enclosure). Terminal: High Quality Twist Knob / Banana Plug Terminal Cup (Bare Wire 'up to 10GA'). Overall Dimensions: 46-5/8" L x 12" W x 15-1/4" H. Harmony Audio HA-R124 Rhythm Series 12" Subwoofer (per driver): Power Handling: Peak: 600 watts, RMS: 300 watts. Sensitivity: 88.2dB. Frequency Response: 27Hz - 1.8kHz. Mounting Depth: 5 11/16". Mounting Cutout Diameter: 11 1/8". Sealed Box Volume (Cubic Feet): Min 1.25, Max 3.52. Vented Box Volume (Cubic Feet): Min 1.65, Max 2.3. Kicker CX300.1 CX Series Single-Channel Class D Car Amplifier (single 4 ohm): RMS Power Rating: 4 ohms: 150 watts x 1 chan.; 2 ohms: 300 watts x 1 chan. Max power output: 600 watts x 1 chan. PWM MOSFET power supply. LED indicators: power (green) and protect (red). Variable Bass Boost: 0 to +12 dB at 40 Hz. Single-channel operation with speaker-level (high-level) inputs and signal-sensing auto turn-on. Preamp RCA outputs for daisy chaining multiple amps. Protection: 3-way (thermal, overload, speaker short). Dual speaker terminals for easier multi-speaker hook-up. Heavy duty aluminum alloy heat-sink. Nickel-plated RCA level inputs and nickel-plated screw terminals. Input Sensitivity: Low level: 125mV-5V; High level: 250mV-10V. Variable Low-Pass Filter: 50-200 Hz, 12 dB/octave. Subsonic Filter: 24 dB at 25 Hz. CEA-2006 compliant. Frequency Response: 25-200 Hz. Installation requires 8 gauge power and ground wiring. Amp Dimensions: 7-3/16" W x 8-1/8" D x 2-3/8" H. Harmony HA-AK10 Car Stereo Complete 10 Gauge 600W Amp Install Kit: nickel finish; includes 10 gauge wiring and accessories required for amp installation. This package delivers a sealed dual-12 solution tuned for Ford Mustang Coupe trunks with matching subs and a capable single-channel Class D amplifier — all parts listed above are included and spec-accurate.