User manual MCINTOSH MC1.2KW

[. . . ] Power Amplifier MC1. 2KW Owner's Manual McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549 The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. WARNING - TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. To prevent the risk of electric shock, do not remove cover or back. No user-serviceable parts inside. IMPORTANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT. 1. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. [. . . ] For additional instruction on making Loudspeaker Connections contact your McIntosh Dealer or McIntosh Technical Support. Connection Method for use inside the United States and Canada only: Attach the previously prepared bare wire cable ends into the banana plugs and secure the connections. Connection Method for use outside the United States and Canada: Attach the previously prepared bare wire cable ends into the spade lug connectors and secure the connections. Insert the spade lug connector or prepared section of the cable end into the terminal side access hole, and tighten the terminal cap until the cable is firmly clamped into the 8 Notes: 1. If desired, the twisted ends can be tinned with solder to keep the strands together. In the United States, when using the 8 ohm loudspeaker terminals, it is mandatory to use banana plugs inserted into the top hole of the loudspeaker terminals in order to comply with safety standard requirements. 6. Connect the MC1. 2KW power cord to an active AC outlet. Cover Mounting Screw Location Terminal Connections Cover Note: There are six openings on the bottom edge of the cover to allow the Loudspeaker's Cable to exit the MC1. 2KW. The Rear Chassis Handle has tapped screw openings on both sides for securing the cover. Rear Chassis Handle Cover Mounting Screw Location Cable Openings Figure 7a (Inside USA and Canada) Terminal Connections Cover Cover Mounting Screw Location Rear Chassis Handle Cover Mounting Screw Location Cable Openings Figure 7b (Outside USA and Canada) How to Connect McIntosh Preamplifier Connect to AC Outlet McIntosh Loudspeaker 9 How to Connect for Bi-Amp Caution: The supplied AC Power Cord should not be connected to the Rear Panel of the MC1. 2KW Amplifier until after the Loudspeaker Connections have been made and the supplied protective Terminal Connections Cover has been installed. Failure to observe this could result in Electric Shock. Refer to figures A and B. Figure 5 Figure 4 Figure 6 Connection Method for use outside the United States and Canada: Attach the previously prepared bare wire cable ends into the spade lug connectors and secure the connections. Insert the spade lug connector or prepared section of the cable end into the terminal side access hole, and tighten the terminal cap until the cable is firmly clamped into the terminals so the lugs cannot slip out. Connect the loudspeaker hookup cable to the output terminals that match the impedance of your loudspeaker, being careful to observe the correct polarities. Output impedance connections of 2 ohms, 4 ohms and 8 ohms are provided. If the impedance of your loudspeaker is in-between the available connections, use the nearest lower impedance connection. 1. For Remote Power Control, connect a power control cable from the Control Center or Preamplifier Power Control Out to the MC1. 2KW (Amplifier One) POWER CONTROL IN. Connect a power control cable from MC1. 2KW (Amplifier One) POWER CONTROL OUT to the MC1. 2KW (Amplifier Two) POWER CONTROL IN. Connect a cable from the Balanced Output of a McIntosh Preamplifier or Control Center to the MC1. 2KW (Amplifier One) BALANCED INPUT. Connect a cable from the BALANCED INPUT/OUTPUT of the MC1. 2KW (Am- Figure 1 Figure 2 Figure 3 plifier One) to the MC1. 2KW (Amplifier Two) BALANCED INPUT. Prepare the Loudspeaker Hookup Cable for attachment to the MC1. 2KW Power Amplifier: Bare wire cable ends: Carefully remove sufficient insulation from the cable ends, refer to figures 1, 2 & 3. If the cable is stranded, carefully twist the strands together as tightly as possible. Notes: 1. If desired, the twisted ends can be tinned with solder to keep the strands together. In the United States, when using the 8 ohm loudspeaker terminals, it is mandatory to use banana plugs inserted into the top hole of the loudspeaker terminals in order to comply with safety standard requirements. Note: An optional hookup is to use an unbalanced cable and place the INPUT MODE Switch in the UNBALANCED Position. 5. Attach the supplied Terminal Connections Cover with the four Phillips Head Mounting Screws (10-32 x 1/2 inch) to the Rear Panel of the MC1. 2KW Amplifier. Refer to figures 7a and 7b ( on the next page). WARNING: Loudspeaker terminals are hazardous live and present a risk of electric shock. [. . . ] The audible distortion is unpleasant to hear, but the inaudible ultrasonic distortion is also undesirable, since it can damage valuable loudspeaker system tweeters. You will never experience the harsh and damaging distortion due to clipping. The Power Guard circuit is a waveform comparator, moniFigure 18 toring both the input and output waveforms. Under normal With Power Guard operating conditions, there are no differences between the shape of these waveforms. [. . . ]