Sundown Audio SFB-3000D 3000 Watt RMS Mono Class D Car Amplifier, 1 Ohm Stable with Bass Boost, Remote Control and Cooling Fan

The Sundown Audio SFB-3000D is a digital Class D mono block amplifier designed for high power car audio subwoofer systems. It is stable down to 1 ohm and delivers 3000 watts RMS at 1 ohm, 2000 watts RMS at 2 ohms, and 1100 watts RMS at 4 ohms. Its compact chassis measures 9.00" wide by 8.25" long by 2.50" high, helping support installation in vehicles where amplifier mounting space is limited.
Power Delivery: The SFB-3000D uses a dual MOSFET PWM power supply to support consistent power transfer for compatible subwoofer systems. Its mono block design is intended for bass focused installations using properly matched speakers, wiring, power systems, and enclosure designs. A recommended 250A fuse rating supports electrical planning for high current operation, while the working voltage range is listed from 10.5V to 15.5V DC.
Sound Adjustment: A variable 12 dB per octave low pass filter allows the amplifier output to be tuned for compatible subwoofer systems. The adjustable bass boost provides 0 to 12 dB of control for changing low frequency output around the chosen system settings. These controls help installers tailor the amplifier response to the enclosure, subwoofer type, music source, and crossover point used in the vehicle audio system.
Remote and Cooling: The included wired remote control provides convenient access to level adjustment and includes a clipping indicator for system monitoring. A three speed temperature activated cooling fan helps manage amplifier heat during longer playback sessions and higher output conditions. This design supports use in demanding systems while keeping the amplifier compact enough for common trunk, cargo area, and custom rack installations.
Protection and Installation: Built in four way protection circuitry monitors thermal conditions, voltage conditions, speaker shorts, and DC offset. The amplifier has a signal to noise ratio rated at 86 dB and is designed for use with a 10.5V to 15.5V DC electrical system. Confirm final speaker impedance, fuse size, cable gauge, battery capacity, grounding, ventilation, and amplifier gain settings before installation or operation.