Performance Limits - McIntosh MC 502 Owner's Manual

Performance Limits

We promise you that the MC 502 you buy must be
capable of performance at or exceeding these limits
at the time of purchase or you get your money back.
Mclntosh PERFORMANCE LIMITS are the maximum
departure from perfection permitted for a Mclntosh
instrument.
PERFORMANCE
Mclntosh audio power ratings are in accordance
with the Federal Trade Commission Regulation of
November 4, 1974 concerning power output claims
for amplifiers used in home entertainment products.
POWER OUTPUT
STEREO:
75 watts into 2.7 to 4 ohm loads, 50 watts into 8
ohms loads, minimum sine wave continuous
average power output per channel from 20 Hz to
20,000 Hz, both channels operating.
Which is: 14.2 volts RMS across 2.7 ohms
17.3 volts RMS across 4 ohms
20.0 volts RMS across 8 ohms
MONO (Bridged):
150 watts into an 8 ohm load, minimum sine wave
continuous average power output from 20 Hz to
20,000 Hz.
Which is: 34.6 volts RMS across 8 ohms.
OUTPUT LOAD IMPEDANCE
Stereo: 2.7 ohms to 8 ohms.
Mono: 8 ohms obtained by connecting across the
output terminals of both channels.
RATED POWER BAND
20 Hz to 20 kHz
TOTAL HARMONIC DISTORTION
STEREO:
.02% maximum harmonic distortion at any power
level from 250 milliwatts to rated power per channel
from 20Hz to 20,000 Hz, both channels operating.
MONO:
.02% maximum harmonic distortion at any power
level from 250 milliwatts to rated power from 20 Hz
to 20,000 Hz.
INTERMODULATION DISTORTION
STEREO:
.02% maximum per channel with both channels
operating for any combination of frequencies, 20 Hz
to 20,000 Hz.
MONO:
.02% maximum at any power level from 250
milliwatts to rated power for any combination of fre-
quencies, 20 Hz to 20,000 Hz.
FREQUENCY RESPONSE (at one watt output)
20 Hz to 20,000 Hz +0, -0.25 dB
10 Hz to 100,000 Hz +0, -3.0 dB
HUM AND NOISE
95 dB below rated output
OUTPUT VOLTAGES:
25 volts for distribution lines
DAMPING FACTOR
Greater than 50
INPUT IMPEDANCE
75,000 ohms
INPUT SENSITIVITY
Switchable: 0.75 volt or 2.5 volts-Level control pro-
vided for higher input voltages.
POWER REQUIREMENT
120 Volts, 50/60 Hz, 0.2 to 4 amperes (20 to 400
watts).
MECHANICAL INFORMATION
SIZE: Front Panel measures 16 inches wide (40.6
cm) by 3 5/8 inches high (9.2 cm). Chassis measures
14 3/4 inches wide (37.5 cm) by 2 3/8 inches high (6.0
cm) by 14 1/2 inches deep (36.8 cm), including con-
nectors. Knob clearance required is 1 1/4 inches (3.2
cm) in front of the mounting panel.
FINISH: Front panel is anodized gold and black
with special gold/teal nomenclature illumination.
Chassis is black.
WEIGHT: 27 pounds (12.2 kg) net. 38 pounds (17.2
kg) in shipping carton
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