Specifications

TOTAL HARMONIC DISTORTION
STEREO
0 005% maximum harmonic distortion at any
power level from 250 milliwatts to rated power per
channel from 20Hz to 20,000Hz, both channels
operating
MONO
0 005% maximum harmonic distortion at any
power level from 250 milliwatts to rated power from
20Hz to 20,000Hz
INTERMODULATION DISTORTION
STEREO
0 005% maximum if instantaneous peak per
output does not exceed twice the output rating per
channel, with both channels operating, for any
combination of frequencies from 20Hz to 20 000Hz
MONO
0 005% maximum if instantaneous peak power
output does not exceed twice the output rating for
any combination of frequencies from 20Hz to
20,000Hz
FREQUENCY RESPONSE (at one watt output)
+ 0, -0 25dB from 20Hz to 20kHz
+ 0, -3 0dB from 10Hz to 100kHz
HUM AND NOISE (A-weighted)
105dB below rated output
IHF DYNAMIC HEADROOM
1 9dB
DAMPING FACTOR
Greater than 40
INPUT IMPEDANCE
20,000 ohms Unbalanced
40,000 ohms Balanced
INPUT SENSITIVITY
Switchable for either 1.4 or 2.5 volts
POWER REQUIREMENTS
120 volts, 50/60Hz, 0.6 to 13 amperes
FRONT PANEL INFORMATION
ILLUMINATED OUTPUT WATTMETERS
The Mclntosh MC7300 is the first high power
amplifier to have Output Wattmeters that respond
95% full scale to a single cycle tone burst at 2kHz
Voltage and current output are electronically
measured, multiplied and fed to a special circuit that
accelerates the pointer movement in the upward
direction When the pointer reaches its peak it
pauses only long enough for the human eye to
perceive its position, then drops It is almost 10
times faster than a professional VU meter
POWER GUARD
This exclusive Mclntosh circuit prevents harsh
sounding clipping and protects your speakers from
damage The MC7300 has a circuit that compares
the wave shape of the output signal to the input
signal If the disparity between the two signals, due
to overdrive, exceeds an average of 0 3% (equivalent
to 0 3% total harmonic distortion) an amber POWER
GUARD indicator illuminates With any further
increases in distortion the POWER GUARD circuit
operates to limit the amplifier input dynamically so
that the amplifier cannot be overdriven POWER
GUARD eliminates amplifier output clipping POWER
GUARD only operates when the amplifier is asked to
deliver more power than that for which it was
designed While the power output remains within
these limits the POWER GUARD indicators do not
illuminate
LEFT GAIN
Use the LEFT GAIN control to adjust the output
in the left channel to the desired listening level Turn
the control clockwise to increase the output
RIGHT/MONO GAIN
Use the RIGHT/MONO GAIN control to adjust
the output in the right channel to the desired listening
level Turn the control clockwise to increase the
output
When connected for monophonic operation use
the RIGHT/MONO GAIN to adjust the total output to
the desired listening level The rear panel MODE
SWITCH must be in the MONO-BRIDGE or MONO
PARALLEL POSITION
MC7300 Product Preview/Page 3
MclNTOSH LABORATORY INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903