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The Down4Sound JP8 v1.5 is a high-powered mono Class-D amplifier designed for serious bass systems. It delivers over 800 W RMS while sporting a retro, “old skool” aesthetic. Its built-in cooling fan and remote control knob with voltage and temperature meter make it as functional as it is stylish. This amp is ideal for audiophiles who demand clean, loud low frequencies in custom subwoofer setups.

Key Benefits

• Delivers very high RMS power for serious subwoofer systems.
• Stable down to 1-ohm impedance, offering flexibility in wiring configurations.
• Vintage-inspired design available in multiple color options.
• Built-in cooling fan helps maintain performance and prolong amplifier life.
• Remote-mounted knob provides real-time voltage and temperature feedback.
• Tunable filters: low-pass, subsonic, and bass boost let you shape the sound.
• High signal integrity with 97 dB signal-to-noise ratio and very low distortion.
• Robust protection with 4-way circuits guarding against thermal issues, voltage extremes, speaker shorts, and DC faults.

Technical Specifications

• Weight: approximately 2.90 lb (no exact spec published, estimate based on similar amps)
• Dimensions: 11.81″ L × 7.40″ W × 2.24″ H
• Power Handling (RMS):
  • 1 Ω: 850 W @ 14.4 V, 700 W @ 12 V
  • 2 Ω: 650 W @ 14.4 V, 500 W @ 12 V
  • 4 Ω: 490 W @ 12 V
  • Strapped (two amps): 2,300 W @ 14.4 V
• Impedance: stable down to 1 Ω mono
• Frequency Response: 10 Hz – 270 Hz
• Low-Pass Filter: 35 Hz – 250 Hz (variable)
• Subsonic Filter: 10 Hz – 50 Hz (variable)
• Bass Boost: 0 – 9 dB (variable)
• Input Sensitivity: 0.2 V – 6 V
• Signal-to-Noise Ratio: 97 dB
• Total Harmonic Distortion (THD): < 0.1% at 4 Ω
• Fuse Rating: 120 A (single), 220 A (when strapped)
• Operating Voltage: 9 – 16 V
• Damping Factor: 100
• Class: D
• Power/Ground Terminals: 4 AWG
• Speaker Output Terminals: up to 12 AWG
• Protection: Thermal, high/low voltage, speaker short, DC

Installation & Compatibility

This amplifier is designed for subwoofer-based car audio systems. Its 4-gauge power and ground inputs require solid wiring to fully leverage its output. The 1-ohm stability provides multiple wiring options for one or more subwoofers. Use the remote knob to adjust gain, monitor clipping, and check voltage or temperature from the driver’s position. The compact design and fan cooling allow installation in tight locations with effective heat dissipation.

FAQS

• ¿Qué rendimiento puedo esperar del JP8 en un sistema compacto?
  El JP8 entrega potencia estable, baja distorsión y un sonido muy controlado, por lo que es perfecto para usuarios que quieren una mejora notable sin ocupar demasiado espacio o exigir el sistema eléctrico.
• ¿El JP8 es compatible con subs y midbass pequeños?
  Sí, funciona muy bien con subs compactos y midbass de bajo consumo. Su entrega de potencia limpia permite aprovecharlos al máximo sin sobrecargarlos.
• ¿Necesito hacer upgrades eléctricos para instalar este amplificador?
  En la mayoría de instalaciones no. Su consumo es moderado, pero si piensas llevarlo al límite, un Big 3 o batería AGM ayuda a mantener el voltaje estable.
• ¿Qué hace destacar al JP8 frente a otros amplificadores pequeños?
  Su eficiencia, su disipación térmica y su estabilidad incluso a altos volúmenes. Además, tiene protección inteligente que ayuda a evitar fallas por temperatura o voltaje.