McIntosh MC1.25KW Owner'S Manual Download Page 1

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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

Summary of Contents for MC1.25KW

Page 1: ...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: ...o 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...

Page 3: ...information on the MC1 25KW and other McIntosh Products please visit the McIntosh Web Site at www mcintoshlabs com Caution The MC1 25KW Amplifier weight is 158 pounds 71 7 kilograms It requires two o...

Page 4: ...g with its harsh distorted sound that can also damage your valuable loudspeaker Sentry Monitor and Thermal Protection McIntosh Sentry Monitor power output stage protec tion circuits ensure the MC1 25K...

Page 5: ...or your MC1 25KW Dimensions 12 1 4 31 11cm 17 3 8 44 15cm Rear View of the MC1 25KW 18 45 72cm 19 1 2 49 50cm 3 16 0 48cm 10 1 2 26 70cm 14 35 60cm 1 9 16 3 96cm 1 1 2 3 81cm 1 5 8 4 12cm Side View of...

Page 6: ...et in maintaining all the system components at the coolest possible operating temperature A custom cabinet installation should provide the fol lowing minimum spacing dimensions for cool opera tion All...

Page 7: ...ch selects between UNBAL anced or BALanced Input BALANCED INput for audio cables from a Preamplifier or A V Processor audio output BALANCED OUTput for an audio cable to the next Power Amplifier Input...

Page 8: ...able ends Carefully remove sufficient insulation from the cable ends refer to figures 2 3 4 If the cable is stranded carefully twist the strands together as tightly as possible Notes 1 If desired the...

Page 9: ...pade Lug or Wire Connections 11 Locate the Terminal Connections Cover from the inside of the MC1 25KW shipping carton Insert the just prepared Loudspeaker hookup cables thru the cover opening on the r...

Page 10: ...14AWG 12AWG 6 Prepare the Loudspeaker Hookup Cable for attach ment to the MC1 25KW Power Amplifier Bare wire cable ends Carefully remove sufficient insulation from the cable ends refer to figures 2 3...

Page 11: ...ck For additional instruction on making Loudspeaker Connections contact your McIntosh Dealer or McIntosh Techni cal Support 11 Attach the Terminal Connections Cover to the MC1 25KW Rear Panel with the...

Page 12: ...ndicator POWER Switch Turns AC Power Off Remote AC Power On METER Switch selects the display modes of the Power Output Meter and Meter Illumination Meter indicates the Output of the amplifier LED indi...

Page 13: ...passes through the amplifier The meter point er will then rise to the newer higher indication If no further power peaks are reached the meter pointer will very slowly return to its rest position or l...

Page 14: ...5KW Output Autoformer It provides low distortion power transfer at frequencies from below 20Hz to well beyond 20 000Hz with optimum impedance points of two ohms four ohms and eight ohms The unequaled...

Page 15: ...ermalTrak DC BIAS OUTPUT MUTE THERMAL SENSORS BALANCED AMP POWER GUARD ATTENUATOR INPUT MODE SWITCH AMP AMP UNBALANCED OUTPUT UNBALANCED INPUT BALANCED INPUT BALANCED OUTPUT ThermalTrak DC BIAS Block...

Page 16: ...circuit and it ensures safe operation of the amplifier under even the most extreme operating conditions The different types of protection circuits incorporated in the MC1 25KW insure a long and safe o...

Page 17: ...mer has toroidal windings on a toroidal core and can supply over 35 amps of continuous current Refer to figure 24 golf ball is for size comparsion It is enclosed in the legendary McIntosh Potted Enclo...

Page 18: ...ion of frequencies from 20Hz to 20 000Hz Wide Band Damping Factor Greater than 40 Input Impedance 10 000 ohms Power Guard Less than 2 THD with up to 14dB overdrive at 1 000Hz Power Control Input 5 15V...

Page 19: ...is will result in shipping damage Use the original shipping carton and interior parts only if they are all in good serviceable condition If a shipping carton or any of the interior part s are needed p...

Page 20: ...cts is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 www mcin...