Page 2 of MC501 Power Amplifiers by McIntosh Laboratory, Inc.

mcintosh laboratory inc 2 chambers street binghamton new york 13903-2699 tel 607 723-3512 ˇ us toll-free 800 538-6576 ˇ fax 607 724-0549 ˇ www.mcintoshlabs.com for the consumer s protection in order to ensure the highest level of customer satisfaction new mcintosh products may only be purchased over-the-counter or delivered and installed by an authorized mcintosh dealer mcintosh products that are purchased over the internet by phone or mail order are presumed to be used and do not qualify for any mcintosh warranty mcintosh does not warrant in any way products that are purchased from anyone who is not an authorized dealer or products that have had their serial number altered or defaced mc501 power amplifier output transformers ensure that you get all the power you paid for whether your speakers are 2 4 or 8 ohms each speaker impedance has a separate set of connectors and the high power and low distortion levels remain constant with any loudspeaker only mcintosh gives you this feature wattmeter voltage and current readings are swift and accurate so staying within the power limits of your speakers is easy power guardŽ other amplifiers have clipping lights that inform you after it s too late to do anything that your amplifier has exceeded its full power and has sent a burst of distortion to your speakers in contrast power guardŽ will turn the volume down and back up using ultra-fast photo optics in as little as 1/1000 of a second when amplifier power limits are exceeded your speakers are protected before you knew anything needed your attention inverted chassis this design plus higher efficiency heat sinks has allowed the chassis depth to be reduced to only 14-13/16 inches making installation easier frequency response +0 -0.25db from 20hz to 20khz +0 -3db from 10hz to 100khz total harmonic distortion 0.005 maximum at any level from 250mw to rated power output intermodulation distortion smpte 0.005 maximum if instantaneous peak output does not exceed twice the output rating a-weighted signal-to-noise ratio unbalanced and balanced 97db 124db below rated output rms power output 500w minimum sine wave continuous average power output from 20hz to 20khz input impedance 10,000 ohms unbalanced 20,000 ohms balanced input sensitivity 2.1 volts unbalanced 4.2 volts balanced wide band damping factor 100 8 ohms dynamic headroom 1.8db rated power band 20hz to 20khz power guardŽ clipping is prevented and thd does not exceed 2 with up to 14db overdrive at 1khz power requirements 120v 50/60hz 6.6a overall dimensions h xwxd 9-7/16 22.86cm x 17-1/2 44.45cm x 14-13/16 37.62cm including front panel and knobs weight 91.5 lbs 41.6 kg net 105.5 lbs 48 kg boxed fully balanced quad-differential design 500 watts high output current capability balanced and unbalanced inputs exclusive mcintosh output autoformerŽ wide power bandwidth low distortion exclusive mcintosh power assurance system illuminated peak-responding true-reading wattmeter with hold mode fiber optic light diffuser illumination for front panel nomenclature and wattmeter remote power control massive gold plated output binding posts silent convection cooling modular construction with stainless steel chassis with super mirror finish 10.03.mc501.20k.jcp 35005600

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