Refined title: Rockville D14 7000w Peak/2000w RMS Class D 2 Channel Power Amplifier

The Rockville D14 7000w Peak/2000w RMS Class D 2 Channel Power Amplifier Pro/DJ Amp boasts an impressive set of features. The input signal voltage ranges from 640mV to 2.7V, with an input sensitivity of 0.7V. The damping factor, which measures the amplifier's ability to control the speaker's movement, is 44.1 at 100Hz, 10W, and 4 ohms, and over 400:1 at 1KHz and 8 ohms. The effective damping factor at 100Hz, 10W, and 4 ohms is 1.08.

The output impedance at the speaker terminals is 0.0901 ohms, and the frequency response versus THD+N (worst-case, across the normal bandwidth at 1W) is 0.09%. The signal-to-noise ratio is greater than 100dB, and the intermodulation distortion (IMD) at 60Hz and 1kHz with a 4:1 ratio is impressive.

The amplifier features an LCD that displays the volume in dB per channel and the operating temperature, all within a 1.5U rack space. The built-in limiter protects the speakers from distortion and clipping, while the bridged mode allows users to combine the power of both channels into one for use with a subwoofer. The stereo mode is perfect for two or four speakers in a left and right configuration, and the parallel mode provides a dual mono output signal, ideal for monitor use when all sounds need to come from each speaker.

The built-in crossover switch (bypass, 80Hz, 160Hz) enables the amplifier to be used with full-range PA speakers or subwoofers. The front panel features channel A and B clipping LED indicators, separate level controls, and power, signal, clipping, and protection LED indicators. The amplifier also boasts heavy-duty rack mount ears with handles and built-in variable high-velocity quiet cooling fans.

The Rockville D14 offers maximum headroom for 4-ohm and 8-ohm speakers, with level controls for precise setting and matching of sensitivity. The computer-controlled IC protection circuitry guards against speaker short circuits, thermal overloads, and DC overloads, and the user-serviceable fuse (20A, 250V) provides additional protection.

The frequency response (bandwidth at 2Vrms out, at -3.0dB) is 10Hz to 30kHz, and the THD + Noise at 1kHz full power is less than 0.18%. The input impedance is 10k ohms balanced. The power ratings are impressive, with RMS power output of 2 x 700W at 8 ohms, 2 x 1000W at 4 ohms, and 1 x 2000W at 8 ohms in bridged mode. The peak power output reaches 2 x 3500W at 4 ohms and 1 x 7000W at 8 ohms in bridged mode.

The input terminals are combo jacks (XLR and 1/4"), and the output terminals include banana binding post speaker outputs, Speakon outputs, and an XLR output to connect another amplifier or powered subwoofer.

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