Specifications - McIntosh MI254 Owner's Manual

Four channel power amplifier
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Specifications

Power Output
Minimum sine wave continuous average power output
per channel, all channels operating is:
250 watts into a 8 ohm load
300 watts into a 4 ohm load
Output Load Impedance
8 and 4 ohms
Rated Power Band
20Hz to 20,000Hz
Total Harmonic Distortion
0.025% maximum harmonic distortion at any power
level from 250 milliwatts to rated power, 20Hz to
20,000Hz
Dynamic Headroom
2.5dB, 8 ohm load
3.5dB, 4 ohm load
Frequency Response
+0, -0.9dB from 20Hz to 20,000Hz
Input Sensitivity for rated output (8 ohm load)
5.0 Volt Balanced
2.5 Volt Unbalanced
Input Sensitivity for rated output (4 ohm load)
3.8 Volt Balanced
1.9 Volt Unbalanced
Signal To Noise Ratio (A-Weighted)
83dB (100dB below rated output)
18
Intermodulation Distortion
0.1% maximum, if the instantaneous peak power
output does not exceed the rated power output for any
combination of frequencies from 20Hz to 20,000Hz.
Wide Band Damping Factor
Greater than 85, 8 ohm Load
Greater than 45, 4 ohm Load
Input Impedance
32,000 ohms Balanced
18,000 ohms Unbalanced
Voltage Gain
25dB
Power Control Input
5-15VDC, less than 1mA
Power Control Output
12VDC, 50mA maximum total
Power Requirements
100 - 240Volts, 50/60Hz at 10 Amps
Standby: less than 0.5 watt
Overall Dimensions
Width is 17-1/2 inches (44.5cm)
Width with Side Mount Brackets attached is
19 inches (48.3cm)
Height is 4-5/16 inches (11.0cm) including feet
Depth is 21 inches (53.3cm) including the Front Panel
and Cables
Weight
23.5 pounds (10.7 kg) net, 39.9 pounds (18.1 kg) in
shipping carton
Shipping Carton Dimensions
Width is 26-1/2 inches (67.3cm)
Height is 11-3/4 inches (29.9cm)
Depth is 24-1/4 inches (61.6cm)
Specifications

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