Harmony Audio Alpine fits SPL Bass W12S4 Dual 12" Subwoofer 500W Ported Sub Box | HA-A800.1 Amplifier, 4GA Amp Kit
Harmony Audio Alpine fits SPL Bass W12S4 Dual 12" Subwoofer 500W Ported Sub Box | HA-A800.1 Amplifier, 4GA Amp Kit
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Harmony Audio Alpine fits SPL Bass W12S4 Dual 12" Subwoofer 500W Ported Sub Box | HA-A800.1 Amplifier, 4GA Amp Kit

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Key item features

  • SPL LABYRINTH VENTED EXTREME OUTPUT DESIGN: This labyrinth vented enclosure is engineered for maximum SPL and aggressive low-frequency performance. Its maze-like internal airflow path boosts air velocity and improves resonance efficiency far beyond standard ported boxes. The heavy-duty construction minimizes vibration and structural flex, even under high-power loads. Designed for bass enthusiasts who want competition-level output in a daily setup. Experience massive, floor-shaking bass that fills your entire vehicle.
  • DUAL ALPINE W12S4 EARTH-SHAKING BASS: Loaded with two Alpine W12S4 12" subwoofers, this system produces deep, powerful, and distortion-free low-end performance. Each sub handles high RMS power while maintaining clarity at extreme bass levels. Alpine’s proven engineering ensures long-lasting durability and consistent sound reproduction. These subs deliver bold, resonant bass across all music genres. Expect hard-hitting, room-filling low frequencies that redefine your audio system.
  • ADVANCED LABYRINTH VENTING TECHNOLOGY: The unique labyrinth airflow design enhances low-frequency extension by increasing air pressure and reducing port turbulence. This optimized airflow system delivers louder, deeper bass while maintaining clean output. Reinforced internal bracing eliminates resonance and unwanted vibrations. Bass remains strong and consistent at low, mid, and high volume levels. Built for SPL-focused performance, this enclosure pushes subwoofers to their full potential.
  • 500W RMS HA-A800.1 AMPLIFIER: The HA-A800.1 amplifier supplies a clean and steady 500W RMS to efficiently power both Alpine 12" subwoofers. Its distortion-free signal ensures deep, controlled bass even during high-demand playback. Integrated protection circuitry helps prevent overheating, clipping, and electrical faults. The compact chassis allows flexible installation in a wide variety of vehicles. This amplifier provides strong, reliable output for a competition-grade bass system.
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