Owners Manual MC126 Power Amplifier MC126 McIntosh Laboratory, Inc.
The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. WARNING - TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. IMPORTANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT. General: 1. Read these instructions. 2.
A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 18. Do not overload wall outlets, extension cords or integral convenience receptacles as this can result in a risk of fire or electric shock. 19.
Introduction and Performance Features Table of Contents Safety Instructions ............................................................ 2 Thank You and Please Take a Moment............................. 3 Technical Assistance and Customer Service .................... 3 Table of Contents and General Notes ............................... 4 Introduction ...................................................................... 4 Performance Features .......................................................
Dimensions Dimensions The following dimensions can assist in determining the best location for your MC126. There is additional information on the next page pertaining to installing the MC126 into cabinets. 17-1/2" 44.45cm Front View of the MC126 7 -5/8" 7 -1/8" 18.10cm 19.37cm 17" 43.18cm Rear View of the MC126 6 -5/16" 16.03cm 13 -1/4" 33.66cm 18-1/2" 46.99cm 17" 43.18cm Side View of the MC126 6-1/2" 3/16" 0.48cm 13/16" 2.06cm 16.51cm 14-1/16" 7/8" 35.72cm 2.
Installation Installation The MC126 can be placed upright on a table or shelf, standing on its four feet. It also can be custom installed in a piece of furniture or cabinet of your choice. The four feet may be removed from the bottom of the MC126 when it is custom installed as outlined below. The four feet together with the mounting screws should be retained for possible future use if the MC126 is removed from the custom installation and used free standing.
Rear Panel Connections and Switch INPUTS for discrete audio cables from an A/V Control Center or Preamplifier Audio Outputs Selects power turn-on mode MULTI-CHANNEL INPUT accepts a 25 conductor DB25 computer type cable that connects all audio and power control signals Individual Input LEVEL Controls for each channel Main Fuse holder, refer to information on the back panel of your MC126 to determine the correct fuse size and rating POWER CONTROL IN receives turn On/Off signals from a McIntosh component
How to Connect the MC126 for Six Channels Caution: The supplied AC Power Cord should not be connected to the Rear Panel of the MC126 Amplifier until after the Loudspeaker Connections have been made and the supplied protective Terminal Connection Covers have been installed. Failure to observe this could result in Electric Shock. 1. Connect a power control cable from the McIntosh A/V Control Center Power Control Out to the McIntosh Surround Expander Power Control In. 2.
How to Connect the MC126 for Six Channels McIntosh A/V Control Center McIntosh Surround Expander To AC Outlet Center Front Loudspeaker Right Front Loudspeaker Left Front Loudspeaker Back Surround Loudspeaker Right Surround Loudspeaker Left Surround Loudspeaker 9
How to Connect the MC126 for Three Channels Caution: The supplied AC Power Cord should not be connected to the Rear Panel of the MC126 Amplifier until after the Loudspeaker Connections have been made and the supplied protective Terminal Connection Covers have been installed. Failure to observe this could result in Electric Shock. 1. Connect a power control cable from the McIntosh A/V Control Center Power Control Out to the McIntosh MC126 POWER CONTROL IN. 2.
How to Connect the MC126 for Three Channels McIntosh A/V Control Center To AC Outlet Center Front Loudspeaker (8 ohm) Right Front Loudspeaker (8 ohm) Left Front Loudspeaker (8 ohm) 11
Front Panel Displays and Controls POWER GUARD LEDs light when the LEFT FRONT, CENTER or RIGHT FRONT Amplifier Channel POWER GUARD Circuit activates Remote On Indicator lights when the amplifier is in the Remote Turn-On Mode POWER GUARD LEDs light when the LEFT SURRound, BACK SURRound or RIGHT SURRound Amplifier Channel POWER GUARD Circuit activates 12 POWER Switch Turns AC power On/Off
How to Operate the MC126 How to Operate the MC126 How to Operate with a Bridged Channel Power On To have the MC126 turn On or Off when a multichannel system turns On or Off, the Front Panel Power Switch must be left in the ON position and the Rear Panel Power Control Switch must be in the REMOTE Position. For non-remote operation, set the Rear Panel Power Control Switch to LOCAL and use the Front Panel Power Switch to turn the MC126 On or Off Figure 9 as desired. Refer to figure 9.
Specifications Specifications Power Output Stereo Minimum sine wave continuous average power output per channel, all channels operating is: 120 watts into a 4 ohm load 80 watts into a 8 ohm load Power Output Mono Minimum sine wave continuous average power output per channel, all channels operating is: 275 watts into a 8 ohm load Rated Power Band 20Hz to 20,000Hz Total Harmonic Distortion Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is: 0.
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 three plastic feet are attached to the bottom of the equipment. Three #10 x 2-1/2 inch screws and washers must be used to fasten the unit securely to the bottom pad and wood skid. This will ensure the proper equipment location on the bottom pad. Failure to do this will result in shipping damage.
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, NY 13903 McIntosh Part No.