background image

7

POWER CONTROL

IN

OUT

SERIAL NUMBER

R

15AH 250V

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

MONO

STEREO

CHANNEL

 12

CHANNEL

 1

1

2 D1 D2

1

BUS

LOCAL

R

L

VOL

MONO

STEREO

CHANNEL

 8

CHANNEL

 7

2 D1 D2

1

BUS

LOCAL

+

+

R

L

VOL

MONO

STEREO

CHANNEL

 6

CHANNEL

 5

2 D1 D2

1

BUS

LOCAL

+

+

R

L

VOL

MONO

STEREO

CHANNEL

 4

CHANNEL

 3

2 D1 D2

1

BUS

LOCAL

+

+

R

L

VOL

MONO

STEREO

CHANNEL

 2

CHANNEL

 1

2 D1 D2

1

BUS

LOCAL

+

+

R

L

VOL

MONO

STEREO

CHANNEL

 10

CHANNEL

 9

2 D1 D2

1

BUS

LOCAL

+

+

R

L

VOL

MONO

STEREO

CHANNEL

 12

CHANNEL

 1

1

2 D1 D2

1

BUS

LOCAL

R

L

DIG

 2

DIG

 1

5

0

/6

0

H

15

A

10

0-

      

12

0V

22

0-

      

24

0V

MI 1250

12 CHANNEL 

POWER AMPLIFIER

McINTOSH LABORATORY, INC., 

BINGHAMTON, NY

HANDCRAFTED IN USA WITH 
US AND IMPORTED PARTS

CLASS 2 WIRING

IN

BUS 1

BUS 2

OUT

IN

OUT

L

+

+

Making All the Right Connections

Summary of Contents for MI1250

Page 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com...

Page 2: ...additional connection information refer to the owner s manual s for any component s connected to the MI1250 2 The MI1250 mutes the speaker output for approxi mately two seconds when first turned on 3...

Page 3: ...m being overdriven into clipping with its harsh distorted sound that can damage your valuable Loudspeakers Versatile Operation The MI1250 provides power amplification for up to twelve channels in a mu...

Page 4: ...the unit Do not install the MI1250 above heat generating components When installed in a cabinet with other components use a ventilation fan to provide cool operating temperature A custom cabinet inst...

Page 5: ...NEL 1 2 D1 D2 1 BUS LOCAL R L VOL MONO STEREO CHANNEL 10 CHANNEL 9 2 D1 D2 1 BUS LOCAL R L VOL MONO STEREO CHANNEL 12 CHANNEL 11 2 D1 D2 1 BUS LOCAL R L DIG 2 DIG 1 50 6 0H z 15A 100 120V 220 240V MI...

Page 6: ...OCAL BUS selects between the specific Channel Unbalanced Input Jack or BUS which allows selection of the BUS Switch 1 2 D1 or D2 The BUS Switch allows selection of the following BUS 1 Unbalanced Input...

Page 7: ...ONO STEREO CHANNEL 4 CHANNEL 3 2 D1 D2 1 BUS LOCAL R L VOL MONO STEREO CHANNEL 2 CHANNEL 1 2 D1 D2 1 BUS LOCAL R L VOL MONO STEREO CHANNEL 10 CHANNEL 9 2 D1 D2 1 BUS LOCAL R L VOL MONO STEREO CHANNEL...

Page 8: ...ize is 0 100 inches 2 54 mm so it will fit the into opening on the MI1250 Connection Plug 2b If desired the twisted ends can be tinned with solder to keep the strands together typical Multichannel Sys...

Page 9: ...ates when the Channel is ON with an Audio Signal Present and Normal Operation for the Channel exists Amber Indicates when maximum Power Output for the Channel has occured with prevention of Audio Clip...

Page 10: ...ch channel Channel input switches to select from connected analog and digital sources Mono Stereo select switch for each channel pairing Main fuse please refer to rear panel markings for proper fuse s...

Page 11: ...000Hz Total Harmonic Distortion 0 05 maximum harmonic distortion at any power level from 250 milliwatts to rated power 20Hz to 20 000Hz Dynamic Headroom 2 1dB 8 ohm load 3 3dB 4 ohm load Frequency Re...

Page 12: ...cts is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 www mcin...

Reviews: