McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 MI347 Seven Channel Power Amplifier Owner’s Manual POWER MI347 SEVEN CHANNEL POWER AMPLIFIER 4 5 L C R 6 7 www.mcintoshlabs.
Important Safety Information is supplied in a separate document “Important Additional Operation Information Guide” Thank You With the MI347 Amplifier, you have invested in a precision instrument that will provide you with many years of enjoyment. Please take a few moments to familiarize yourself with the features and instructions to get the maximum performance from your equipment.
General Information, con’t, and Cable Information, Introduction and Performance Features 6. For additional information on the MI347 and other McIntosh Products please visit the McIntosh Website at www.mcintoshlabs.com. Connector and Cable Information XLR Connectors Below is the Pin configuration for the XLR Balanced Input, Input/Output Connectors on the MI347.
Dimensions Dimensions The following unit dimensions may be helpful in determining the best location for your MI347. Front View of the MI347 17-1/2" 44.5cm POWER MI347 SEVEN CHANNEL POWER AMPLIFIER 4 L 5 C R 6 6-1/16" 15.4cm 7 Side View of the MI347 18-1/2" 47.0cm Front View of the MI347 with Side Mount Brackets 19" 17-1/16" 43.3cm 48.3cm POWER MI347 SEVEN CHANNEL POWER AMPLIFIER 4 L 5 C R 6 13.3cm 7 .25" Rear View of the MI347 16-1/2" .64cm 2.0" 41.
Installation Installation The MI347 may be placed upright on its four feet or custom installed with the four feet removed. If removed, retain the four feet and fastening screws for any future re-installation. The panel cutout, ventilation cutout and unit dimensions are shown in the drawing on the right side of this page. It is necessary to provide adequate ventilation for cool operation, ensuring long life for the MI347. Do not install the MI347 above heat generating components.
Rear Panel Connections and Switches Main Fuse, refer to the Rear Panel for the correct fuse size and rating UNBALanced and BALanced Input for CHANNEL 6/Right Surround UNBALanced and BALanced Input for CHANNEL 5/Left Surround UNBALanced and BALanced Input for CHANNEL 4/Left Backround UNBALanced and BALanced Input for CHANNEL 2/Center Front UNBALanced and BALanced Input for CHANNEL 3/Right Front POWER CONTROL IN receives Power On/Off signal from a McIntosh Component POWER CONTROL OUT sends a Power On/Off
How to Connect for a Multi Channel System Output Terminals When connecting the Loudspeaker Hookup Cables to the MI347 Amplifier Output Terminals please follow the steps below: 1. Rotate the top of the Output Terminal Post counterclockwise until an opening appears. Refer to figures A and B. 2. Insert the Loudspeaker hookup cable into the Output Terminal Opening Post opening or the cable spade Figure B Figure A lug around the center post of the Output Terminal. Refer to figure C. 3.
How to Operate Spade Lug or Wire Connections: 4. Connect the Loudspeaker hookup cables to the MI347 Output Terminal being careful to observe the correct polarities, making sure to match up channel designation with Loudspeaker location. Insert the spade lug connector or prepared section of the cable end into the terminal side access hole. Then tighten the terminal cap until the cable is firmly clamped into the terminals so the lugs or Figure 6 Figure 7 Figure 8 wire cannot slip out.
Front Panel Displays and Switch POWER MI347 SEVEN CHANNEL POWER AMPLIFIER 4 5 L C R 6 7 POWER Push-Button switches AC Power On or Off CHANNEL 4 Left Backround Loudspeaker RED Indicates Standby Power ON CHANNEL 5 Left Surround Loudspeaker CHANNEL 1 Left Front Loudspeaker CHANNEL 2 Center Output Loudspeaker CHANNEL 3 Right Front Loudspeaker CHANNEL 6 Right Surround Loudspeaker CHANNEL 7 Right Backround Loudspeaker Front Panel LED Indicators 4, 5, L, C, R, 6, 7 CHANNEL 1-7 Front Panel TRI-COL
Specifications Specifications Power Output Minimum sine wave continuous average power output: 4 Channels at 125 Watts into 8 ohm load 4 Channels at 200 Watts into 4 ohm load 3 Channels at 250 Watts into 8 ohm load 3 Channels at 300 Watts into 4 ohm load Input Sensitivity for rated output for Channels 1-3 (4 ohm load) 3.8 Volt Balanced 1.
Packing Instructions Packing Instructions In the event it is necessary to repack the equipment for shipment, the equipment must be packed exactly as shown below. It is very important that the four plastic feet are attached to the bottom of the equipment. This will ensure the proper equipment location on the bottom pad. Failure to do this will result in shipping damage. Use the original shipping carton and interior parts only if they are all in good serviceable condition.
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, NY 13903 www.mcintoshlabs.com The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice. Printed in the U.S.A. McIntosh Part No.
