Performance Limits - McIntosh MC 2250 Owner's Manual

Performance Limits

PERFORMANCE GUARANTEE
Performance Limits are the maximum deviation
from perfection permitted for a Mclntosh instru-
ment. We promise you that when you purchase a
new MC 2250 from a Mclntosh franchised dealer, it
will be capable of or can be made capable of perfor-
mance at or exceeding these limits or you can return
the unit and get your money back. Mclntosh is the
only manufacturer that makes this statement.
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
250 watts minimum sine wave continuous average
power output, per channel, both channels operating
into 1 ohm, 2 ohms, 4 ohms, or 8 ohms load im-
pedance, which is:
15.8 volts RMS across 1 ohm
22.4 volts RMS across 2 ohms
31.6 volts RMS across 4 ohms
44.7 volts RMS across 8 ohms
MONO
500 watts minimum sine wave continuous average
power output into 0.5 ohm, 1 ohm, 2 ohms, 4 ohms, 8
ohms, or 16 ohms load impedance, which is:
15.8 volts RMS across 0.5 ohm
22.4 volts RMS across 1 ohm
31.6 volts RMS across 2 ohms
44.7 volts RMS across 4 ohms
63.2 volts RMS across 8 ohms
89.4 volts RMS across 16 ohms
OUTPUT LOAD IMPEDANCE
STEREO
1 ohm, 2 ohms, 4 ohms, and 8 ohms; separate ter-
minals are provided for each output.
MONO-PARALLEL
0.5 ohm, 1 ohm, 2 ohms, and 4 ohms; obtained by
connecting together the appropriate terminals of
both channels.
MONO-BRIDGED
2 ohms, 4 ohms, 8 ohms, or 16 ohms, balanced to
common connections.
RATED POWER BAND
20 Hz to 20,000 Hz
TOTAL HARMONIC DISTORTION
STEREO
0.02% maximum harmonic distortion at any power
level from 250 milliwatts to 250 watts per channel
from 20 Hz to 20,000 Hz, both channels operating.
MONO
0.02% maximum harmonic distortion at any power
level from 250 milliwatts to 500 watts from 20 Hz to
20,000 Hz.
INTERMODULATION DISTORTION
STEREO
0.02% maximum if instantaneous peak power out-
put is 500 watts or less per channel with both chan-
nels operating for any combination of frequencies,
20 Hz to 20,000 Hz.
MONO
0.02% maximum if instantaneous peak power out-
put is 1000 watts or less for any combination of fre-
quences, 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 + 0.25 - 1 dB.
NOISE AND HUM
95 dB below rated output.
DAMPING FACTOR
Greater than 30
INPUT IMPEDANCE
50,000 ohms.
INPUT SENSITIVITY
Switchable: 0.75 volt or 2.5 volts—level control pro-
vided for higher input voltages.
POWER GUARD
Clipping is prevented and THD does not exceed 2%
with up to 20 dB overdrive at 1 KHz.
GENERAL INFORMATION
POWER REQUIREMENTS
120 volts 50/60 Hz 0.7 to 12 amps.
SEMICONDUCTOR COMPLEMENT
76 silicon transistors
37 silicon rectifiers and diodes
9 integrated circuits
MECHANICAL INFORMATION
SIZE
Front panel measures 16 inches wide (40.7 cm) by
6-31/32 inches high (17.7 cm).
14-9/16 inches wide (37 cm) by 6-1/2 inches high (16.5
cm) by 14-1/2 inches deep (36.8 cm), including con-
nectors. Knob clearance required is 1 inch (2.5 cm) in
front of mounting panel
FINISH
Front panel is anodized gold. Chassis is chrome and
black
WEIGHT
80 pounds (36.3 kg) net, 94 pounds (42.6 kg) in ship-
ping carton
-12-
RATINGS
Chassis measures