User manual MCINTOSH MQ 101

[. . . ] Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. Only use attachments/accessories specified by the manufacturer. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/ apparatus combination to avoid injury from tip-over. [. . . ] Allow at least 12 inches (30. 48cm) above the top; 4 inches (10. 16cm) for the Front, Rear and Sides; and 1/2 inches (1. 27cm) below the Power Amplifier so the airflow is not obstucted. Warm Air Figure 4 Figure 7A Figure 5 Tube Cover Screw Tube Cover Screw Figure 7B Cool Air Figure 9 5 Thank You Your decision to own this McIntosh MC75 Tube Power Amplifier ranks you at the very top among discriminating music listeners. You now have "The Best. " The McIntosh dedication to "Quality, " is assurance that you will receive many years of musical enjoyment from this unit. Please take a short time to read the information in this manual. We want you to be as familiar as possible with all the features and functions of your new McIntosh. Customer Service If it is determined that your McIntosh product is in need of repair, you can return it to your Dealer. You can also return it to the McIntosh Laboratory Service Department. For assistance on factory repair return procedure, contact the McIntosh Service Department at: McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-3515 Fax: 607-723-1917 General Information 1. The following Connecting Cable is available from the McIntosh Parts Department: Power Control Cable Part No. 170-202 Six foot, 2 conductor shielded, with two 1/8 inch stereo mini phone plugs. Please Take A Moment The serial number, purchase date and McIntosh Dealer name are important to you for possible insurance claim or future service. The spaces below have been provided for you to record that information: Serial Number: _______________________________ Purchase Date: _______________________________ Dealer Name: ________________________________ 2. For additional connection information, refer to the owner's manual(s) for any component(s) connected to the MC75. · Gold Plated Connectors and Tube Socket Contacts Gold Plated Input Jacks and Output Binding Posts provide trouble free connections. Ceramic tube sockets with gold plated contacts provide protection from atmospheric contamination. Output Tube Sockets include Air-Pipe cooling at their bases. · Special Power Supply A regulated Power Supply, a very large core Power Transformer and large capacitors ensure stable noise free operation even though the power line varies. · Titanium Chassis with Super Mirror Finish The famous McIntosh Stainless Steel Chassis with Super Mirror Gold Finish ensure the pristine beauty of the MC75 will be retained for many years. XLR Connectors Below is the Pin configuration for the XLR Balanced Input, Input/Output Connectors on the MC75. Refer to the diagram for connection: INPUT IN/OUT PIN 1: Shield/Ground PIN 2: + Output PIN 3: - Output PIN 2 PIN 1 PIN 3 PIN 1 PIN 3 PIN 2 Power Control Connector The MC75 Power Control Input receives an On/Off signal from +5 to +12 volts. Power The Power Control Output Control will in turn provide a +12 volt N/C Output Signal with a current up to 20mA. The 1/8 inch stereo Ground mini phone plug connects to a McIntosh Preamplifier or A/V Control Center Power Control Output. Note: The Power Control Connecting Cable is available from the McIntosh Parts Department: Data and Power Control Cable Part No. 170-202 Six foot, shielded 2 conductor, with 1/8 inch stereo mini phone plugs on each end. Introduction Now you can take advantage of traditional McIntosh standards of excellence in the MC75 Tube Power Amplifier. The 75 watt power output will drive any high quality Loudspeaker System. The MC75 reproduction is sonically transparent and absolutely accurate. [. . . ] Figure 7 Note: There must be a power control connection between the MC75 and the Preamplifier/A/V Control Center, in order for the remote power turn-on to function. is at the 2 O'Clock setting. If the Preamplifier or A/V Control Center has an Electronic Volume Display, adjust the Volume Display for an indication of 70% or 0dB. This will help to assure the widest useful range of volume control settings especially when listening to music at lower levels. Standby/Protection Indicator The MC75 Sentry Monitor Tube Protection Circuitry provides protection to the Power Amplifier in the event of an impedance mismatch1 between the MC75 and the Loudspeaker. [. . . ]