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MC275

McIntosh MC275 Owner's manual

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  • What is the impedance of the loudspeaker system in stereo operation?
    What is the impedance of the loudspeaker system in monaural operation?
    How do I connect the MC275 to my audio preamplifier?
    How do I connect the MC275 to my loudspeakers?
    What is the power requirement of the MC275?
MC275 Stereo Operation Connection Diagram
1A
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com Part No. 04133600
Audio Preamplifier
Note: Refer to the MC275 Owner’s Manual page 10 for additional connection information.
Connection Legend:
Data Cable*- Digital Signal Cable -
Sensor/Keypad Cable - Network/RS232 Cable -
Power Control Cable* - Ground Wire -
Audio Signal Cable - AC Power Cords -
Video Signal Cable - Loudspeaker Cable -
RF Signal Cable -
* 2 conductor shielded with 1/8 inch stereo mini phone plug on each end.
Connect to
AC Outlet
Right Loudspeaker System Left Loudspeaker System
Handcrafted in USA with US
and Imported Parts
(-)
(+)8Ω
(-)
(+)8Ω
(+)8Ω
(-)
(+)8Ω
(-)
MC275 Monaural Operation Connection Diagram
1B
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com
Audio Preamplifier
Note: Refer to the MC275 Owner’s Manual page 12 for additional connection information.
Connection Legend:
Data Cable*- Digital Signal Cable -
Sensor/Keypad Cable - Network/RS232 Cable -
Power Control Cable* - Ground Wire -
Audio Signal Cable - AC Power Cords -
Video Signal Cable - Loudspeaker Cable -
RF Signal Cable -
* 2 conductor shielded with 1/8 inch stereo mini phone plug on each end.
Connect to
AC Outlet
Loudspeaker System
Handcrafted in USA with US
and Imported Parts
JUMPER
BAR
1
(-)
(-)
(+)16Ω
(+)16Ω
To second MC275
1
NOTE: When the Mode Switch is set to MONO, the
supplied Jumper Bars are used to connect the
output of the Left and Right Amplier Chan-
nels in parallel. The effective output imped-
ance of the MC275 Power Amplier is now
8Ω, even though the physical connections are
made to the 16Ω terminals.
The 8Ω terminals would be paralleled when
a 4Ω Loudpeaker is connected to the MC275
(operating in MONO Mode). Likewise the
4Ω terminals would be paralleled when a 2Ω
Loudpeaker is connected to the MC275 (oper-
ating in MONO Mode).
16
16
JUMPER
BAR
1
JUMPER
BARS
1
(-)
(+)8Ω
/