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Summary of Contents for McIntosh MC312
- Page 1 McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com MC312 Power Amplifier Owner’s Manual...
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Page 2: Table Of Contents
Technical Assistance and Customer Service ....2 Purchase Date: _______________________________ it to the McIntosh MC312. Table of Contents ............2 In the event the MC312 over heats, due to improper General Information ........... 2 Dealer Name: ________________________________ ventilation and/or high ambient temperature, the Connector and Cable Information ......3... -
Page 3: Connector And Cable Information
Stainless Steel Chassis with Super Mirror Fin- Output. The patented McIntosh Power Guard circuit prevents ish ensures the pristine beauty of the MC312 will be the amplifier from being over driven into clipping, retained for many years. Output Terminal Connector... -
Page 4: Dimensions
Dimensions Dimensions The following dimensions can assist in determining the best location for your MC312. Front View of the MC312 " 44.5cm " " 7/16 22.5cm Side View of the MC312 24.0cm 20" 50.8cm " 42.2cm Rear View of the MC312 "... -
Page 5: Installation
Installation Installation 17" The MC312 can be placed upright on a table or 43.18cm 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... -
Page 6: Rear Panel Connections And Switch
RIGHT OUTPUT Connections Fuse holder, refer to information LEFT OUTPUT Connections for a 2 ohm, 4 ohm or 8 ohm on the rear panel of your MC312 for a 2 ohm, 4 ohm or 8 ohm Loudspeaker to determine the correct fuse... -
Page 7: Output Terminals And How To Connect
Audio Preamplifier or A/V Con- ment to the MC312 Power Amplifier: the MC312 Power Amplifier Output Terminals please trol Center Power Control Output 1 to the MC312 Bare wire cable ends: follow the steps below: POWER CONTROL IN. - Page 8 Note 3 on page 2 for additional information. tosh Technical Support. WARNING: Loudspeaker terminals are hazard- 9. Connect the MC312 power cord to an active AC ous live and present a risk of electric outlet. shock. For additional instruction on...
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Page 9: Output Terminals And How To Connect For Bi-Amp
Audio Preamplifier or A/V Con- wire size: the MC312 Power Amplifier Output Terminals please trol Center Power Control Output 1 to the MC312 follow the steps below: Loudspeaker Cable Distance vs Wire Gauge Guide POWER CONTROL IN Amplifier One. - Page 10 Figure H Figure F nana plugs into the hole at the top of the terminal to the MC312 COM (Nega- Figure 7 tive) Output Terminal and Positive Output Ter- Figure 8 minal indentified as 2Ω (ohms), 4Ω (ohms) or 8Ω...
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Page 12: Front Panel Displays And Controls
Front Panel Displays and Controls Meter indicates the Standby Power Meter indicates the Left Channel Output On Indicator Right Channel Output LED indicates when the LEFT LED indicates when the RIGHT of the amplifier of the amplifier Channel Amplifier POWER Channel Amplifier POWER GUARD circuit activates GUARD circuit activates... -
Page 13: How To Operate
Circuitry, the AUTO OFF Switch is bypassed (located Figure 11 Meter Selection on the Rear Panel of the MC312). Refer to figure 13. Rotate the meter mode switch to select the meter Hold - The meter pointer is locked to the high- In the event there is no operation mode you desire. -
Page 14: Technical Description
60 amperes, making it one of the most advanced amplifiers available today. The distor- tion limits for the MC312 are no more than 0.005% at rated power output for all frequencies from 20Hz to 20,000Hz. Typical performance at mid frequen- cies is less than 0.002%. - Page 15 The output signals of the amplifier circuit is the power output stage. current gain over the entire current range they must coupled together in the unique McIntosh MC312 This increase in temperature will result in a reduced cover. Output transistors in particular, have matched Output Autoformer.
- Page 16 Normal Operating Area Power Output Meter a long and safe Guard activates the PG The McIntosh MC312 has large Output Watt Me- operating life. This light and a dynamic elec- ters that respond 95% full scale to a single cycle tone...
- Page 17 Figure 24 Power Supply Circuits for both amplifier channels, necessary for the wide To compliment the design of the MC312 Power Am- dynamic range that “Digital Audio” demands. Refer to plifier Circuitry, there is a high current high voltage figure 26.
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Page 18: Specifications
240V ~ 50/60Hz at 3.3 Amps 20Hz to 20,000Hz 22,000 ohms Unbalanced Standby: less than 0.5 watt Note: Refer to the rear panel of the MC312 for the cor- rect voltage. Total Harmonic Distortion Voltage Gain 0.005% maximum harmonic distortion at any power... -
Page 19: Packing Instruction
If a shipping carton or any of the interior part(s) are needed, please call or write Customer Service Depart- ment of McIntosh Laboratory. Refer to page 2. Please see the Part List for the correct part numbers. Quantity... - Page 20 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. 04188200...
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