Rotel RB-870BX - Service Manual

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Specifies RMS power output for both channels driven into 8 ohms.

Details power output measured per DIN standard at 1kHz, 4 ohms.

Indicates maximum peak current handling capability.

Specifies mono RMS power output when bridged to 8 ohms.

Details THD performance at rated and half-power output.

Details IM distortion performance at rated and half-power.

Covers damping factor, input sensitivity, and frequency response.

Includes power requirements, consumption, dimensions, and weight.

Details how to adjust amplifier bias using a voltmeter.

Explains resistor notations, tolerance, and types used in the schematic.

Explains capacitor notations, types, and values used in the schematic.

Power Output

continuous power output	100 watts per channel, min.
DIN power output	200 watts per channel (1kHz, 4 ohms, 1% THD)
bridged power	300 watts (mono) min. RMS driven into 8 ohms

Distortion

total harmonic distortion	No more than 0.03% (continuous rated power output)
intermodulation distortion	No more than 0.03% (60Hz: 7kHz = 4:1)
damping factor	180 (20 to 20, 000Hz, 8 ohms)

Electrical Specifications

peak current	50A (0.1 ohms, 10/isec, 1 pulse)
input sensitivity/impedance	1.0V/2 kohms
power requirement	120V/60Hz, 220W50Hz, 240V/50HZ or 120, 220, 240V/50Hz-60Hz (switchable)

Sound and Frequency