McIntosh MC 7100 Service Manual

Page 1

M07100

POWER AMPLIFIER

Starting with serial no. KC1001

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STEREO POWER AMPLIFIER

CONTENTS

Performance Specifications ....................... 2
Rear Panel ................................... 3
Notes ...................................... 3
Block Diagram .............................. 4-5
Section Locations .............................. 5
Section 1 ~ Interconnection Diagram ............. 6-7

- Front Panel and Trim Parts List .......... 6

. Installation Parts List ................. 7
Section 2 - Driver ......................... 8-10
Section 3 ~ Heatsink ...................... 11-12
Section 4 - Power Supply ................... 13-14
Section 5 - Power Control .................... 14
Repacking Instruction .......................... 15

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Page 2

Performance Specifications

STEREO POWER OUTPUT
150 watts into 4 ohm loads or 100 watts into
8 ohm load minimum sine wave continuous
average power output per channel, both
channels operating.
The output RMS voltage is:
28.3V across 8 ohms
24.5V across 4 ohms

MONOPHONIC (BRIDGED)

300 watts into an 8 ohm load minimum sine
wave continuous average power output. The
output RMX voltage is: 49 volts across 8 ohms.

OUTPUT LOAD IMPEDANCE
STEREO
8 or 4 ohms

MONOPHONIC
8 ohms

RATED POWER BAND
20Hz to 20,000Hz

TOTAL HARMONIC DISTORTION

0.005% maximum harmonic distortion at any
power level from 250 milliwatts to rated power
output.

IHF DYNAMIC HEADROOM
8 ohms, 1.7dB
4 ohms, 2.1dB

FREQUENCY RESPONSE
+0, -0.25dB from 20Hz to 20,000Hz
+0, -3.0dB from 10Hz to 100,000Hz

INPUT SENSITIVITY
1.4 volts (2.5 volts at gain control center
detenti

A-WEIGHTED SlGNAL-TO-NOISE
95dB (115dB below rated output)

INTERMODULATION DISTORTION, SMPTE

0.005% maximum if instantaneous peak
power output does not exceed twice the output
power rating.

RATINGS

WIDE BAND DAMPING FACTOR
8 ohms, 200
4 ohms. 100

INPUT IMPEDANCE
20,000 ohms

POWER GUARD

Clipping is prevented and THD does not
exceed 2% with up to 14dB overdrive at
1000Hz.

POWER REQUIREMENTS
120 volts, 50/60Hz, 3.0 amps UL/CSA

MECHANICAL

SIZE: Front Panel is 17-1/2 inches (44.5cm)
wide, by 3-9/16 inches (9cm) high. Depth is 16-
1/2 inches (41 .Scm) deep, including connectors.
Panel clearance required in front of the mounting
surface is 3/4 inch (1 .9cm).

FINISH: Glass with special gold/teal
nomenclature illumination. Chassis and chassis
cover are black.

WEIGHT: 24 pounds (11Kg) net; 35 pounds
(15.9Kg) in shipping carton.