Specifications - McIntosh MA6500 Owner's Manual

Specifications

Power Output
250, 200, 120 watts minimum sine wave continuous aver-
age power output per channel, both channels operating,
into a load impedance of 2, 4, and 8 ohms respectively.
Total Harmonic Distortion
0.005% maximum at any power level from 250 milliwatts
to rated power per channel from 20Hz to 20,000Hz, both
channels operating.
Intermodulation Distortion
0.005% maximum if instantaneous peak output per channel
does not exceed twice the rated output with both channels
operating for any combination of frequencies from 20Hz to
20,000Hz.
Output Load Impedance
2, 4 or 8 ohms
Rated Power Band
20Hz to 20,000Hz
Dynamic Headroom
2.4dB at 2, 4 or 8 ohms
Damping Factor
60 at 2 Ohms
120 at 4 ohms
230 at 8 ohms
Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
Signal To Noise Ratio (A Weighted)
90dB (84dB IHF) below 10mV input, Phono Input
100dB (90dB IHF) below rated output, High Level
110dB below rated output, Power Amplifier
Sensitivity
Phono, 2.5mV for 2.5V rated output (0.5mV IHF)
High Level, 250mV for 2.5V rated output (50mV IHF)
Power Amplifier Input, 2.5V for rated output
Input Impedance
Phono, 47K ohms, 65pF
High Level, 22K ohms
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Maximum Input Signal
Phono, 90mV
High Level, 8V
Preamplifier Maximum Voltage Output
Phono, 90mV at tape output
High Level, 8V at tape output
Main Out, 8V at preamp output
Voltage Gain
High Level to Tape: 0dB
High Level to Main: 20dB
Tone Controls
Bass Control ± 12dB @20Hz
Treble Control ± 12dB @10kHz
Power Requirements
100 Volts, 50/60Hz at 4.8 Amps
110 Volts, 50/60Hz at 4.4 Amps
120 Volts, 50/60Hz at 4.0 Amps
220 Volts, 50/60Hz at 2.0 Amps
230 Volts, 50/60Hz at 2.0 Amps
240 Volts, 50/60Hz at 2.0 Amps
NOTE: Refer to the rear panel of the MA6500 for the correct
voltage.
Dimensions
17-1/2 inches (44.5 cm) wide by 7 1/16 inches (17.9 cm)
high. Depth behind front panel is 18-1/8 inches (46 cm)
including connectors. Knob clearance required in front of
the mounting panel is 1-1/8 inches (2.9 cm).
Weight
41 pounds (18.6 Kg) net, 60 pounds (27.2 Kg) in shipping
carton
Specifications