Specifications

TURN ON DELAY
The MC7106 has a circuit that delays amplifier
operation for about two seconds after turn on. This
prevents pops or thumps generated in other equipment
from causing annoying noises or damaging your
speakers.
REMOTE TURN ON
A rear panel power switch is provided with 2
positions, ON and REMOTE. In the remote position the
amplifier can be turned "ON" by a 5V logic level signal
to the THX connector or POWER CONTROL INPUT jack.
MODULAR CONSTRUCTION
If service should be required, modular construction
makes repairs easier.
TOROID POWER TRANSFORMER
The toroid permits a design with low noise and cool
operation.
Performance Specifications
POWER OUTPUT PER CHANNEL
160 watts into 4 ohm loads or 100 watts into 8
ohm loads minimum sine wave continuous average
power output per channel, all channels operating. The
output RMS voltage is:
28.3 across 8 ohms
25.3 across 4 ohms
BRIDGED
320 watts into an 8 ohm load minimum sine wave
continuous average power output, which is 50.6 volts
RMS.
OUTPUT LOAD IMPEDANCE
NORMAL
8 or 4 ohms.
BRIDGED
8 ohms.
RATED POWER BAND
20Hz to 20kHz
TOTAL HARMONIC DISTORTION
0.005% maximum harmonic distortion at any power
level from 250 milliwatts to rated power per channel
from 20Hz to 20,000Hz, all channels operating.
DYNAMIC HEADROOM
1.8dB
FREQUENCY RESPONSE
+ 0. -0.25dB from 20Hz to 20kHz
+ 0, -3.0dB from 10Hz to 100kHz
INPUT SENSITIVITY
1 volt (2.5V at gain control center detent)
INPUT IMPEDANCE
20,000 ohms
A WEIGHTED SIGNAL TO NOISE RATIO
92dB (112dB below rated output)
INTERMODULATION DISTORTION
0.005% maximum if instantaneous peak per
output does not exceed twice the output rating per
channel, with all channels operating, for any combina-
tion of frequencies from 20Hz to 20,000Hz.
WIDE BAND DAMPING FACTOR
8 ohm, 200
4 ohm, 100
POWER REQUIREMENTS
120 volts 50/60Hz, 9.5 amps
Front Panel Information
The all glass front panel of the MC7106 has six
vertical light columns, one per channel. A column
consists of ten LEDs. Nine indicate percent of rated
power output and the tenth, power guard operation.
Rear Panel Information
GAIN CONTROLS
The input sensitivity of the MC7106 is 1V with
the gain controls full CW. If one desires to match the
2.5V rating for Mclntosh preamps simply turn each gain
control CCW to the detent position on the control. The
controls should be full CW for THX operation.
The number 1, 3, & 5 gain controls also control
the gain in the BRIDGED mode of operation.
INPUTS
In the normal mode of operation all input jacks
MC7106 Product Preview/Page 2
MCINTOSH LABORATORY INC., 2 CHAMBERS STREET, BlNGHAMTON, NEW YORK 13903