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5-Channel Class D System Amplifier, 70 W x 4 @ 4 ohms + 500 W x 1 @ 2 ohms - 14.4V
Crafted as an all-in-one, total system solution, the RD900/5 is engineered to power a complete audio system consisting of a subwoofer + four satellite system with 900 watts of high-performance sound. Equipped with our exclusive NexD™ switching technology, this complete power package efficiently generates a potent 70 watts of crystal-clear audio into 4 ohms, plus a robust 500 watts for a subwoofer system, all from a single compact chassis. Each pair of main channels is also fully bridgeable, stoutly producing 200 watts of full-range audio bliss (into 4 ohms), creating an ultra-powerful 3-channel amplifier.
Conveniently located on top of the RD900/5, you’ll find a complement of studio-grade signal processing features, all hidden beneath a removable protective cover. Each pair of main channels is equipped with a 12 dB / octave high-pass filter, with a dedicated low-pass filter for its subwoofer channel. All three crossovers offer continuously variable frequency selection from 50-500 Hz, for precise filtering. Dual-range, differential-balanced inputs are also onboard, capable of accepting most input voltage levels, plus automatic turn-on capability (via signal sensing or DC-offset sensing) for maximum versatility.
LED clipping indicators are also standard equipment for each channel section. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. The RD900/5 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition. With the addition of an RBC-1 remote level control (sold separately), you can conveniently control the subwoofer’s output remotely from the driver’s seat.
| Main Channels @ 4 ohms | 70 W RMS x 4 |
| Main Channels @ 2 ohms | 100 W RMS x 4 |
| Main Channels - Bridged @ 4ohms | 200 W RMS x 2 |
| Subwoofer Channel @ 4 ohms | 225 W RMS x 1 |
| Subwoofer Channel @ 3 ohms | 325 W RMS x 1 |
| Subwoofer Channel @ 2 ohms | 500 W RMS x 1 |
| Subwoofer Channel @ 1.5 ohms | N/A |
| Main Channels @ 4 ohms | 60 W RMS x 4 |
| Main Channels @ 2 ohms | 90 W RMS x 4 |
| Main Channels - Bridged @ 4ohms | 180 W RMS x 2 |
| Subwoofer Channel @ 4 ohms | 200 W RMS x 1 |
| Subwoofer Channel @ 3 ohms | 250 W RMS x 1 |
| Subwoofer Channel @ 2 ohms | 350 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 - 500 Hz (+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 | >150 / 50 Hz |
| Damping Factor @ 2 ohms | >75 / 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 | Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High) |
| Min.Copper Power / Ground Wire Gauge | 4 AWG wire |
| Fuse Rating | 80 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) | High-Pass only |
| Filter Slope(s): Channels 3 & 4 (rear) | 12 dB/octave |
| Filter Frequency Range: Channels 3 & 4 | 50 Hz - 500 Hz |
| Filter Mode(s): Subwoofer Channel | Low-Pass only |
| Filter Slope(s): Subwoofer Channel | 12 dB/octave |
| Filter Frequency Range: Subwoofer Channel | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometers | No |
| Filter Defeat Function | No |
| Infrasonic Filter: Subwoofer Channel | No |
| Remote Level Control | Optional (RBC-1) |
| Remote Level Modes | Sub Ch. |
| Channel Input Mode Switch | Yes (2/4/6 ch.) |
| Pass-Through Preamp Output | No |
| Source Channel Selection for PreOuts | N/A |
| Height (H) | 2.13 in / 54 mm |
| Width (W) | 14.66 in / 372 mm |
| Depth (D) | 6.96 in / 177 mm |
| Net Weight | 6.15 lb / 2.79 kg |
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