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The Down4Sound MM1500KFD (MINI MAXX) is a compact, high-output full-bridge amplifier that delivers up to 1,500 W RMS at 1 Ω. It’s designed for car audio systems where space is limited but power demands are high. With its mini form factor and full-range capability, it can drive subwoofers, mids, or a mixed setup without sacrificing performance.

Key Benefits

• High power in a small package: Delivers 1,500 W RMS at 1 Ω, making it ideal for small but powerful installs.
• Full-range performance: Generates a wide frequency response (10 Hz – 23.6 kHz) so it works well with subs, midrange, and high frequencies.
• Advanced tuning options: Adjustable high-pass (20–800 Hz) and low-pass (50–800 Hz) filters, plus bandpass capability for flexible system tuning.
• Real-time protection and feedback: Built-in clipping indicator and included remote that shows voltage and temperature, helping you monitor performance and avoid damage.
• Wide compatibility: Works with typical 12V car systems (9–15.5V operating voltage), making integration easier.

Technical Specifications

• Power Output (RMS):
• 500 W × 1 @ 4 Ω
• 1,000 W × 1 @ 2 Ω
• 1,500 W × 1 @ 1 Ω (14.4V, 1% THD)
• Frequency Response: 10 Hz – 23.6 kHz
• Signal-to-Noise Ratio (SNR): ~ 90 dB
• Damping Factor: 150
• Input Sensitivity: 6 V down to 0.2 V
• Filters:
  • High-Pass: 20 Hz – 800 Hz (with multiplier options)
  • Low-Pass: 50 Hz – 800 Hz (with multiplier options)
  • Operational Voltage: 9 V – 15.5 V
  • Terminals: 4 GA power & ground, 14 GA speaker wire

Installation & Compatibility

Because of its compact dimensions, this amp is a great choice for tight installations—under seats, in trunks, or behind panels. Dimensions: 9.44″ × 4.87″ × 2.13″ 

Suitable for a variety of car audio setups: subwoofers, midrange speakers, or full-range systems thanks to its full-bridge design.

To get the most out of this amplifier, ensure that your power system is capable: use thick gauge wiring (4 GA recommended) and a secure ground.

Use the included remote knob to manage clipping or thermal alerts in real-time, which helps protect both the amp and your speakers.

FAQS

• What type of amplifier is the MM1500KFD?
  The MM1500KFD is a high-efficiency class D amplifier designed for strong, clean power output while keeping heat and energy consumption under control.
• How much power does the MM1500KFD deliver?
  It delivers up to 1500 watts, depending on configuration and impedance. It’s ideal for powering subwoofers or high-demand speakers.
• Does the MM1500KFD require a big electrical upgrade?
  Not always, but strong subwoofer setups may benefit from a Big 3 upgrade or an additional battery to maintain stable voltage.
• Is the MM1500KFD good for beginners?
  Yes. It’s user-friendly, compact, and reliable—great for both beginners and experienced installers seeking solid performance.