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3-Channel Class D Marine System Amplifier, 75 W x 2 @ 4 ohms + 300 W x 1 @ 2 ohms - 14.4V
This compact amplifier is ideal for a simple audiophile-grade, subwoofer / satellite system. With the M500/3, you can drive a pair of quality component speaker systems with plenty of clean power, while also delivering a stout 300 W to a subwoofer system. The breakthrough that makes this much power possible in such a small chassis is our NexD™ switching design.
The M500/3 includes a 12 dB / octave high-pass filter for its main channels, plus a variable slope low-pass filter for its subwoofer channel. Both filters offer continuously variable cutoff frequency selection from 50-500 Hz.
This marine amplifier features white and gray powder-coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment.
| Main Channels @ 4 ohms | 75 W RMS x 2 |
| Main Channels @ 2 ohms | 100 W RMS x 2 |
| Main Channels - Bridged @ 4ohms | 200 W RMS x 1 |
| Subwoofer Channel @ 4 ohms | 180 W RMS x 1 |
| Subwoofer Channel @ 3 ohms | 240 W RMS x 1 |
| Subwoofer Channel @ 2 ohms | 300 W RMS x 1 |
| Subwoofer Channel @ 1.5 ohms | N/A |
| Main Channels @ 4 ohms | 60 W RMS x 2 |
| Main Channels @ 2 ohms | 90 W RMS x 2 |
| Main Channels - Bridged @ 4ohms | 180 W RMS x 1 |
| Subwoofer Channel @ 4 ohms | 180 W RMS x 1 |
| Subwoofer Channel @ 3 ohms | 240 W RMS x 1 |
| Subwoofer Channel @ 2 ohms | 300 W RMS x 1 |
| Subwoofer Channel @ 1.5 ohms | N/A |
| Frequency Response (Main Channels) | 12 Hz - 22 kHz (+0, -1dB) |
| Frequency Response (Subwoofer Channel) | 10 Hz - 1 kHz (+0, -1dB) |
| S/N Ratio, referred to highest rated power (Main Channels) | >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| S/N Ratio, referred to 1 W | >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| Damping Factor @ 4 ohms | >120 / 50 Hz |
| Damping Factor @ 2 ohms | >60 / 50 Hz |
| THD+N @ Rated Power (Main Channels) | <1% @ 2 ohms per Ch. |
| THD+N @ Rated Power (Subwoofer Channels) | <1% @ 2 ohms per Ch. |
| Input Voltage Range @ RCA Inputs | 100 mV - 4 V RMS |
| Min.Copper Power / Ground Wire Gauge | 4 AWG wire |
| Fuse Rating | 50 A (AFS, AGU or MaxiFuse™) |
| Filter Mode(s): Channels 1 & 2 (front) | High-Pass only |
| Filter Slope(s): Channels 1 & 2 (front) | 12 dB/octave |
| Filter Frequency Range: Channels 1 & 2 (front) | 50 Hz - 500 Hz |
| Filter Mode(s): Channels 3 & 4 (rear) | N/A |
| Filter Slope(s): Channels 3 & 4 (rear) | N/A |
| Filter Frequency Range: Channels 3 & 4 | N/A |
| Filter Mode(s): Subwoofer Channel | Low-Pass only |
| Filter Slope(s): Subwoofer Channel | 12/24 dB/octave |
| Filter Frequency Range: Subwoofer Channel | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometers | Yes |
| Filter Defeat Function | Yes |
| Infrasonic Filter: Subwoofer Channel | none |
| Remote Level Control | Optional (HD-RLC) |
| Remote Level Modes | Sub Ch. or All Channels |
| Channel Input Mode Switch | Yes (2/4 ch.) |
| Pass-Through Preamp Output | Buffered |
| Source Channel Selection for PreOuts | Yes (1&2/Sum/Sub) |
| Height (H) | 2.05 in / 52 mm |
| Width (W) | 8.52 in / 216 mm |
| Depth (D) | 7.09 in / 180 mm |
| Net Weight | 4.8 lb / 2.18 kg |
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