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Summary of Contents for McIntosh MC1.25KW
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Page 1: Power Amplifier
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com MC1.25KW Quad Balanced Power Amplifier Owner’s Manual... -
Page 2: Table Of Contents
Technical Assistance Table of Contents Your decision to own this McIntosh MC1.25KW Quad If at any time you have questions about your McIntosh Safety Instructions .............. 2 Balanced Power Amplifier ranks you at the very top product, contact your McIntosh Dealer who is familiar (Separate Sheet) ......Important Additional... -
Page 3: General Information
MC1.25KW. PIN 2: + Input/Output to the MC1.25KW. In the event the MC1.25KW over heats, due to im- PIN 3: - Input/Output 2. The MC1.25KW mutes the speaker output for ap- proper ventilation and/or high ambient temperature,... -
Page 4: Introduction
Sound of the Music Itself.” Finish McIntosh Sentry Monitor power output stage protec- tion circuits ensure the MC1.25KW will have a long The famous McIntosh Illuminated Glass Front Panel Performance Features uses long life Light Emitting Diodes (LEDs) and the and trouble free operating life. -
Page 5: Dimensions
Dimensions Dimensions The following dimensions can assist in determining the best location for your MC1.25KW. " 45.09cm 11" " 5/16 Front View of the MC1.25KW 27.94cm 31.27cm " 49.50cm 18" " 45.72cm 4.12cm Side View of the MC1.25KW " "... -
Page 6: Installation
Installation Installation The MC1.25KW can be placed upright on a table or " 9/16 shelf, standing on its four feet. It also can be custom 44.62cm installed in a piece of furniture or cabinet of your choice. The four feet may be removed from the bot- tom of the MC1.25KW when it is custom installed as... -
Page 7: Rear Panel Connections And Switch
OUTPUT Connections for OUTPUT Connections for a 2 ohm Loudspeaker a 8 ohm Loudspeaker Caution: The Loudspeaker Negative Connections are above chassis ground. Do not combine any connections together, ground them or connect with another MC1.25KW. -
Page 8: How To Connect
Caution: Do not connect the AC Power Cord to the Remove Screws inserted into spade lug connectors. to figure 1. MC1.25KW Rear Panel until after the Loud- 3. Banana plugs are for use in the United speaker Connections are made and the protec- This McIntosh MC1.25KW Quad States and Canada only. -
Page 9: Output Terminals And How To Connect
Refer to figures 7 and 8. cal Support. 9. Attach the Terminal Connections Cover to the MC1.25KW Rear Panel with the previously re- moved Screws. Refer to figure 5. 10. Connect the MC1.25KW power cord to an active Cable AC outlet. Openings Figure 7... -
Page 10: Output Terminals And How To Connect For Bi-Amp
Caution: Do not connect the AC Power Cord to the keep the strands together. plifier One Audio BALANCED MC1.25KW Rear Panel until after the Loud- 2. The prepared bare wire cable ends may be speaker Connections are made and the protec-... -
Page 11: For Bi-Amp
Cable moved Screws. Refer to figure 5. Openings Figure 5 (Inside USA and Canada) 12. Connect the MC1.25KW power cord to an active 8. Attach the previously prepared bare wire cable AC outlet. ends into the banana plugs and secure the connections. -
Page 12: Front Panel Displays And Controls
Front Panel Displays and Controls LED indicates when the Amplifier POWER GUARD circuit activates Meter indicates the Output Standby Power of the amplifier On Indicator METER Switch selects the display modes of the POWER Switch Turns AC Power Off, Power Output Meter and Meter Illumination Remote, AC Power On... -
Page 13: How To Operate
How to Operate How to Operate Power On Auto Off Switch To have the MC1.25KW automatically turn On or Off The MC1.25KW incorporates Power Save Circuitry when a Preamplifier or Control to automatically place the MC1.25KW into the power Center turns On or Off, rotate... -
Page 14: Technical Description
McIntosh has ever manufactured. The owner would never accept the approximately 100 mise, using the most advanced McIntosh circuit design distortion limits for the MC1.25KW are no more times higher distortion of many non-feedback designs. concepts. Refer to figure 13. - Page 15 Technical Description expertise of McIntosh in the design and manufactur- ing of autoformers is legendary in the high fidelity industry. The high efficiency circuit design of the MC1.25KW contributes to low operating tempera- tures. More than 2800 square inches of heatsink area keep the MC1.25KW operating safely with convection...
- Page 16 Figure 19 overdriven, there will be incorporated in the MC1.25KW insure a long and safe operating life. This a difference between the two signal waveforms. is just one of the many characteristics of McIntosh When the difference Power Amplifiers that make them world famous.
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Page 17: Technical Description
Figure 24 450 Joules of energy necessary for the wide dynamic Figure 25 relay in the MC1.25KW. The MC1.25KW also has a range that “Digital Audio” demands. Refer to figure 25. The power amplifier draws high current from the remote Power Control Out Jack. The Power Control signal from this jack is delayed by a fraction of a sec- AC power line. -
Page 18: Specifications
Wide Band Damping Factor 240 Volts, 50/60Hz at 6.5 Amps Output Load Impedance Greater than 40 Standby: 0.5 watts Note: Refer to the rear panel of the MC1.25KW for the 2, 4 or 8 ohms correct voltage. Input Impedance Rated Power Band... -
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. 04178100...
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