User manual MCINTOSH MC58

[. . . ] Eight Channel Power Amplifier MC58 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. [. . . ] For additional connection information, refer to the owner's manual(s) for any component(s) connected to the MC58 Amplifier. There is a built-in turn on delay which will mute the speaker outputs for approximately two seconds when the amplifier is turned on. It is very important that loudspeaker cables of adequate size be used in your music system, to ensure that there will be no power loss or heating. Cable size is specified in Gauge numbers or AWG (American Wire Gauge). The smaller the Gauge number, the larger the wire size: If your loudspeaker cables are 25 feet (7. 62m) or less, use at least 18 Gauge (AWG) wire size or larger. If your loudspeaker cables are 50 feet (38. 1m) or less, use at least 16 Gauge (AWG) wire size or larger. If your loudspeaker cables are 100 feet (76. 2m) or less, use at least 14 Gauge (AWG) wire size or larger. Connector Information Power Control Connectors The MC58's Power Control Input uses a 5 volt signal. Use a 1/8 inch stereo mini phone plug to connect to the Power Control Positive Input on other McIntosh CompoN/C nents. Ground Multi-Room Din Connector Pin Layout 1. 8 Channel In DB25 Connector Pin Layout 1. (Main) 8 CHANNEL IN 4 Introduction and Performance Features Introduction Eight 50 watt McIntosh amplifier channels in one convenient package make the MC58 an ideal amplifier for a multizone system. The MC58 can be configured in different Operating Modes to fit a wide range of uses where a multichannel amplifier is required. For example, it has the ability to bridge a pair of channels for 100 watts output. · Individual Channel or Bridged Pair Configuration Each pair of MC58 amplifier channels can be operated separately at 50 watts each, or bridged for 100 watts. The MC58 is ideal for any application requiring a multichannel power amplifier, such as a mulitzone system or home theater system. Front Panel The classic McIntosh Illuminated glass front panel includes eight individual channel power guard indicators, four channel pair status indicators and a Power On/Off switch. Performance Features · · Power Output The MC58 consists of eight separate power amplifier channels, each capable of 50 watts into 4 ohm speakers with less than 0. 005% distortion. This is 400 watts of McIntosh power in a single package. Power Guard All eight channels include the patented McIntosh Power Guard Circuit, that prevents the amplifier from being overdriven into clipping with its harsh distorted sound that can also damage your valuable loudspeakers. Sentry Monitor McIntosh Sentry Monitor power output stage protection circuits are present on all eight channels to ensure the MC58 will have a long and trouble free operating life. Thermal Protection Built-in thermal protection circuits guard against overheating which could shorten the normal long life expectancy of your McIntosh power amplifier. Direct Current Protection Direct Current sensing circuits on each channel provide extra protection for your valuable loudspeakers. Convenient Single Cable Hookup A rear panel connector provides for the convenience of using a single cable, (DB25 computer style) to receive all audio and power control signals from a McIntosh Multizone Control System. · · · · · 5 MC58 Dimensions The following dimensions can assist in determining the best location for your MC58. There is additional information on the next page pertaining to installing the MC58 into cabinets. 17-1/2" 44. 45cm Front View of the MC58 7 -1/8" 18. 10cm 7 -5/8" 19. 37cm 17" 43. 18cm Rear View of the MC58 6 -5/16" 16. 03cm 13 -1/4" 33. 66cm 18-1/2" 46. 99cm 17" 43. 18cm Side View of the MC58 3/16" 6-1/2" 0. 48cm 16. 51cm 13/16" 2. 06cm 14-1/16" 35. 72cm 7/8" 2. 22cm 6 Dimensions and Installation Installation The MC58 can be placed upright on a table or shelf, standing on its four 1 inch high feet. The four feet may be removed from the bottom of the MC58 when it is custom installed as outlined below. [. . . ] Adjust the Bridged Level control to the 2. 5V position if using a McIntosh Multizone System or Control Center. Connect the cable from the signal source component to the Bridged In jack. Connect loudspeaker cables to the terminals marked (-) and (+) Bridged. Input Level Controls When using a McIntosh Multizone Control System or Control Center set all five level controls to the 2. 5V position. If a preamplifier or control center has a 1V output rating, set the controls to the 1V position. [. . . ]