McIntosh MC275 Maintenance Manual

Special components used in the MC275 are listed below.
These components are designed and built specifically for the
MC275. They may be purchased directly from Mclntosh
Laboratory by ordering from the Service Department. Be
sure to mention "Schematic No.," description, and model
and serial number for your amplifier when ordering parts.
LABORATORY, INC.
2 CHAMBERS STREET, BINGHAMTON, N. Y.
Made in U.S.A.
Phone-Area Code 607-723-5491
2M-HP-761
SCHEMATIC NO.
C24,C25,C26,C27
L1, L2, L3, L4
L5
R1, R2, R3
R7
R59
S2
SR1,SR2,SR3,SR4
SR5
T1
T2
T3
DESCRIPTION
Filter Capacitor 100/30 mfd 500/450V
RF Choke
Filter Choke
Gain Control, 250K
Balance Control
Thermistor
Input Selector Switch
Silicon Rectifier, 600 PIV at 500 MA
Selenium Rectifier, 400 PIV at 75 MA
Output Transformer, Type M-216A
Output Transformer, Type M-216B
Power Transformer, Type M-215

McIntosh MC275 Specifications

General

Damping factor	20
Amplifier class	-
Frequency range	10 - 70000 Hz
Output impedance	16 Ω
Audio output channels	2.0 channels
Peak power per channel	75 W
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.50 %
RMS power output per channel (2 Ohm)	150 W
XLR in	Yes
Audio (L/R) in	2
Audio (L/R) out	6
Speakers connectivity type	Binding post
Purpose	Performance/stage
Product color	Black, Silver
Connectivity technology	Wired
Maximum current	3.6 A
AC input voltage	120 V
AC input frequency	50 - 60 Hz
Package weight	34100 g

Weight and Dimensions

Depth	304.8 mm
Width	419.1 mm
Height	209.6 mm
Weight	30500 g