Related Manuals for McIntosh MC275 50th Anniversary
Summary of Contents for McIntosh MC275 50th Anniversary
- Page 1 McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com MC275 Anniversary Tube Power Amplifier Owner’s Manual...
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Page 2: Safety Instructions
The lightning flash with arrowhead, within an equilateral The exclamation point within an equilateral triangle is triangle, is intended to alert the user to the presence of intended to alert the user to the presence of important uninsulated “dangerous voltage” within the product’s en- operating and maintenance (servicing) instructions in the closure that may be of sufficient magnitude to constitute literature accompanying the appliance. - Page 3 IMPORTANT! INSTRUCTIONS FOR REMOVAL OF FOAM INSERT OVER THE VACUUM TUBES PRIOR TO CONNECTING THE A.C. POWER SUPPLY CORD, START ON THE NEXT PAGE.
- Page 4 MC275 MC275. If you can not find the chassis screws, chassis on each side of the MC275. Refer to figure contact the McIntosh Parts Department for before connecting the AC 2. Carefully lift up and remove the Tube Cover replacements.
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Page 5: Unpacking The Mc275 And Ventilation
Unpacking the MC275 and Ventilation Figure 3 Figure 6 Foam Insert Figure 8 Ventilation Adequate ventilation extends the trouble free life of the MC275. Always allow air to flow through the ventilation holes on the bottom of the amplifier and a means for the warm air to escape at the top. -
Page 6: Table Of Contents
Customer Service General Information Your decision to own this McIntosh MC275 Tube If it is determined that your McIntosh product is in 1. For additional connection information, refer to the Power Amplifier ranks you at the very top among need of repair, you can return it to your Dealer. You owner’s manual(s) for any component(s) connected... -
Page 7: Connector Information
IN/OUT PIN 1: Shield/Ground MC275 reproduction is sonically transparent and abso- PIN 2: + Output lutely accurate. The McIntosh Sound is “The Sound of • Gold Plated Connectors and Tube Socket Con- PIN 3: - Output tacts the Music Itself.”... -
Page 8: Dimensions
Dimensions Dimensions The following dimensions can assist in determining the best location for your MC275. Left Side View of the MC275 Front View of the MC275 " -1/2 41.9cm " -3/4 4.5cm " -7/8 " -1/2 20.0cm 21.6cm " -1/4 3.2cm Top View of the MC275 Right Side View of the MC275... -
Page 9: Left Side Connections; Indicator And Switch: Right Side Connection, Fuse Holder And Switch
POWER CONTROL IN receives a turn On/Off INPUT switch selects Standby Power signal from a McIntosh component between BALanced On Indicator POWER CONTROL OUT sends a turn On/Off and UNBALanced signal to the next McIntosh Component Input connections Refer to page 15 for additional information... -
Page 10: How To Connect For Stereo Operation
UNBALanced Position. Figure A lug around the center post of States and Canada only. This McIntosh MC275 Power Amplifier is designed the Output Terminal. Refer to for Loudspeakers with an impedance of 4 ohms, 8 figure C. Banana Plugs are for use in the United States and ohms or 16 ohms. - Page 11 For additional instruction on 3 on page 6 for additional information. making Loudspeaker Connections con- WARNING: Loudspeaker Terminals are hazardous tact your McIntosh Dealer or McIn- live and present a risk of electric shock. tosh Technical Support. For additional instruction on making 9.
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Page 12: How To Connect For Monaural Operation
MC275 Power Amplifiers BALanced INPUT R/MONO. operating in Mono Mode for the Right Channel and The McIntosh MC275 Power Amplifier in MONO another MC275 for the Left Channel. Mode is designed for Loudspeakers with an imped- The following connection instructions, together ance of 2 ohms, 4 ohms or 8 ohms. - Page 13 How to Connect for Monaural Operation Banana Plugs are for use in the United States and McIntosh Wrench, rotate the top of the Output Canada only: Terminal one quarter of a turn (90° ). Do not over 6. Attach the previously prepared bare wire cable ends tighten.
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Page 14: Right Side Switch, Left Side Switch And Indicators
Right Side Switch, Left Side Switches and Indicators AUTO OFF Switches the Power Save INPUT Switch selects between On (ENABLED)or Off (DISABLED) STEREO and MONO Modes of operation Small Signal Vacuum Tube LED Illumination Color: Amber - Warmup Mode Green - Normal Operation - Sentry Monitor INPUT Switch selects POWER Switch Turns... -
Page 15: How To Operate
Notes: 1. There must be a power control connection performance of the Power Amplifier. circuitry. between the MC275 and the McIntosh Pream- In the event a problem occurs, the circuitry will plifier in order for the remote power turn-on to activate to prevent potentially destructive high levels function. -
Page 17: Photos
Photos... -
Page 18: Specifications
Specifications Specifications Power Output Stereo Overall Dimensions Signal To Noise Ratio (A-Weighted) Minimum sine wave continuous average power output Width is 21-1/2 inches (54.6cm) including Cables 105dB below rated output per channel, both channels operating is: Height is 8-1/2 inches (21.6cm) including feet 75 watts into 4 ohm loads Depth is 12 inches (30.5cm) Intermodulation Distortion... -
Page 19: Packing Instruction
Customer Service Depart- POLY BAG ment of McIntosh Laboratory, refer to page 3. Please WARNING see the Part List for the correct part numbers. SHEET... - 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. 04131100...