Part Number 010-03116-00 Monoblock Class D Car/Marine Subwoofer Amplifier, 600 W x 1 @ 2 Ω / 400 W x 1 @ 4 Ω - 14.4V This potent monoblock amplifier employs our high-speed NexD™ switching design to achieve unprecedented efficiency and amazing power output from a very compact chassis. Don't let its small size fool you, though... the XDM/600/1 generates serious subwoofer power, delivering a full 600 W of continuous power into a 2 ohm load (14.4V, 1% THD). Designed for car or boat installations, the XDM600/1 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades. Targeted specifically for subwoofer applications, the XDM600/1 includes a variable slope low-pass filter with continuously variable cutoff frequency selection from 50-500 Hz.With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), the amplifier's level can be adjusted directly from the driver's seat or captain’s chair. Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access. Rated Continuous (RMS) Power @ 14.4 V @ 4 Ω 400 W RMS x 1 @ 3 Ω 500 W RMS x 1 @ 2 Ω 600 W RMS x 1 General Specifications Frequency Response 7 Hz - 500 Hz (+0, -1dB) S/N Ratio, referred to highest rated power >87 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >67 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >1000 / 50 Hz Damping Factor @ 2 Ω >500 / 50 Hz THD+N @ Rated Power