McIntosh MC275 Instruction manual

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. 04131300

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

(-) (+)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

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.

Audio Preamplifier

Connect to

AC Outlet

Loudspeaker System

JUMPER

BAR1

(-)

(-)

(+)16Ω

(+)16Ω

To second MC275

1NOTE: 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

BAR1

JUMPER

BARS1

(-)

(+)8Ω

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