McIntosh MC 150 Service Manual

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M6150 POWER AMPLIFIER

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CONTENTS
Performance Specificanons 2 (9 Right Front Panel illumination
Rear Panel 3 Len Meter Illumination
Front Panel & Trim Paris List 3 Right Marat Illuminailon
Noles 3 Power Guard Illumination
Section Locations 4 Mater/Regulator
Block Diagram 5-6 Amplifier
® Interconnection Diagram 7-10 Relay
lnpui 1 1-12 Repacking Insiructions
La" Front Panel Illumination 13

1 3
1 4
14
14
1 5-1 7
1 8-23
24-26
27

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Service Manual

Molntaah Labur-auor-y, Inc. 2 Chan-mars Sun-ac. Elnahamcon, New York 13903 Princsd In U.S.Ar Para No.040338

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Performance Specifications

POWER OUTPUT

Stereo

150 watts minimum sine wave continuous
average power output, per channel, both
channels operating into 2 ohms, 4 ohms or 8
ohms load impedance.

17.3 volts RMS across 2 ohms

24.5 volts RMS across 4 ohms

34.6 volts across 3 ohms

MONO/BRIDGED

300 watts minimum sinewave continuous
average power output into 4, 8 or 16 ohms
load impedance which is

34.6 volts RMS across 4 ohms

49.0 volts RMS across 8 ohms

69.3 volts RMS across 16 ohms

MONO/PARALLEL

300 watts minimum sinewave continuous
average power output into 1, 2 or 4 ohms load
impedance which is

17.3 volts RMS across 1 ohm

24.5 volts RMS across 2 ohms

34.6 volts HMS across 4 ohms

OUTPUT LOAD IMPEDANCE

Stereo

2 ohms, 4 ohms, and 8 ohms; separate
terminals are provided for each output.

OUTPUT LOAD IMPEDANCE

Mono/Bridged

4 ohms, 4 ohms or 16 ohms by connecting to
the proper output terminals.

Mono/Parallel
1 ohm, 2 ohms or'4 ohms by connecting to the
proper output terminals.

RATED POWER BAND
20Hz to 20,000Hz

TOTAL HARMONIC DISTORTION

0.005% Maximum harmonic distortion at any
power level from 250 milliwatts to 150 watts
per channel from 20Hz to 20,000Hz, both
channels operating.

INTERMODULATION DISTORTION

0.005% maximum harmonic if instantaneous
peak power output is 300 watts or less per
channel with both channels operating for any
combination of frequencies, 20Hz to 20,000Hz.

FREQUENCY RESPONSE
(AT ONE WATT OUTPUT)
20Hz to 20,000Hz -0.25dB
10Hz to 100,000Hz -3dB

NOISE AND HUM lA-WEIGHTEDI
110dB below rated output

IHF DYNAMIC HEADROOM
1.8dB

RATINGS
DAMPING FACTOR
Greater than 40

INPUT IMPEDANCE
20,000 ohms

INPUT SENSITIVITY
1.4 volts, level control provides for higher input
voltages; 2.5 volt position at detent.

POWER GUARD
Clipping is prevented and THD does not exceed
2% with up to 14dB overdrive at lkHz.

POWER REQUIREMENTS
120VAC, 50/60Hz, 3.3 Amperes UL/CSA
230VAC, 50/60Hz, 1.8 Amperes

MECHANICAL INFORMATION

Size: Front panel measures 17-1/2 inches
(44.5ch wide, by 5-3/8" 3.7ch high.
Depth behind mounting panel including
clearance for connectors, 19-3/4 inches
(50.2cm). Knob clearance required in front of
the mounting panel, 1-1/8 inches (2.9ch.

Weight: 59 pounds (26.8kgl net, 76 pounds
(34.5kgl in shipping carton.

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