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The Down4Sound JP23 V2 is a highly powerful Class‑D mono amplifier designed for serious subwoofer builds. It delivers 2,800 W RMS at 1 Ω, making it a go-to choice for SPL systems or high-demand bass installs. The V2 is more compact than its predecessor (about 23% smaller) while offering strong performance and modern tuning flexibility. 

Key Benefits

• High Power Output: 2,800 W RMS @ 1 Ω; 1,800 W @ 2 Ω; 800 W @ 4 Ω. 
• Strappable: Can be strapped (two units) for up to 5,600 W. 
• Compact Design: 23% smaller than the JP23 V1.5, ideal for tight installs. 
• Advanced Cooling: High-speed internal fan to keep temperatures stable. 
• Tunable Filters:
• Low-pass: 35 Hz – 250 Hz 
• Subsonic: 10 Hz – 50 Hz 
• Bass Boost: 0 – 9 dB 
• Remote Control Knob: Includes a remote knob to adjust bass level and monitor voltage/temperature. 
• Robust Protection: 4-way protection (thermal, high/low voltage, speaker short, DC) for reliability. 

Technical Specifications

• Power Ratings:
• 1 Ω: 2,800 W RMS @ 14.4 V 
• 2 Ω: 1,800 W RMS @ 14.4 V 
• 4 Ω: 800 W RMS 
• Frequency Response: 10 Hz – 270 Hz 
• Input Sensitivity: 0.2 – 6 V 
• Signal-to-Noise Ratio (SNR): ~97 dB 
• THD (Total Harmonic Distortion): < 0.1% (at 4 Ω) 
• Fuse Rating: 300 A (single), 600 A (strapped) 
• Operating Voltage Range: 9 – 15.5 V 
• Physical Dimensions & Weight
• Dimensions: 13.38″ L × 7.40″ W × 2.24″ H 
• Compact Form: Thanks to its reduced size, it fits well in tight trunk spaces, under seats, or in custom enclosures. 

Installation & Compatibility

Power Wiring: Use 1/0 AWG for power and ground to safely supply the high current required.

Cooling: Mount in a location that allows airflow for the internal cooling fan to operate effectively.

Tuning Tips:

Set the low-pass filter according to your sub’s tuning (e.g., 80–120 Hz).

Use the subsonic filter around 15–30 Hz to protect against over-excursion.

Adjust bass boost carefully — too much can distort if the signal or wiring isn’t clean.

Strapping: If using two JP23 V2 amps strapped, ensure proper wiring and fuse setup for safety.

FAQS

• What improvements does the JP23v1.5 offer compared to earlier versions?
  The v1.5 version provides refined cooling, better reliability, and more consistent power delivery under heavy loads.
• How much power does the JP23v1.5 produce?
  It delivers strong RMS output designed to push high-performance subwoofers with authority.
• Is the JP23v1.5 recommended for daily bass systems?
  Absolutely. It’s stable, efficient, and perfect for daily drivers who want deep, controlled bass.
• Does Livewire Audio offer support for JP23v1.5 wiring?
  Yes, Livewire Audio provides guidance on wiring, load configuration, and electrical upgrades.