Page 2 of MC252 Power Amplifier 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 mc252 power amplifier wide bandwidth the latest digital recording techniques are easily accommodated by the wide 10-100,000hz bandwidth of the mc252 ultra low noise and distortion distortion is so low it defies measurement even with the finest distortion analyzers power guardŽ a waveform comparison circuit continuously monitors input and output signals detection of any difference triggers an optical circuit that operates at the speed of light to adjust the volume and prevent distortion sentry monitorŽ helps prevent damage due to improper loads or accidental short circuits on speaker lines output wattmeters staying within the power limits of speakers is easy with the large illuminated peak-responding mcintosh wattmeters a peak-hold option keeps this information visible for an extended time with slow decay time mono operation the two 250 watt channels may be combined into a single channel of 500 watts mcintosh exclusive output autoformers allow this 500 watts to be delivered into 1 2 4 8 or 16 ohm speakers rms power output 250w min stereo or 500w min mono and bi-amp parallel sine wave continuous average power output from 20hz to 20khz rated power band 20hz to 20khz total harmonic distortion maximum total harmonic distortion at any power level from 250 milliwatts to rated power output is 0.005 dynamic headroom 2.0db frequency response 20hz to 20khz +0 -0.25db 10hz to 100khz +0 -3db input sensitivity 1.6v unbalanced 3.2v balanced a-weighted signal-to-noise ratio 112db below rated output intermodulation distortion maximum intermodulation distortion if instantaneous peak output per channel does not exceed twice the rated output for any combination of frequencies from 20hz to 20,000hz with all channels operating is 0.005 input impedance 10,000 ohms unbalanced 20,000 ohms balanced output load impedance terminals for 2 4 or 8 ohms stereo terminals for 4 8 or 16 ohms mono terminals for 1 2 or 4 ohms bi-amp parallel wide band damping factor greater than 40 power guard 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 including feet and knobs 9-7/16 23.97cm x 17-1/2 44.45cm x 14-13/16 37.62cm weight 94-1/2 lbs 42.87kg net 108-1/2 lbs 49.22kg boxed 250 watts stereo or 500 watts mono balanced and unbalanced inputs exclusive mcintosh output autoformerŽ wide power bandwidth low distortion exclusive mcintosh power assurance system illuminated peak-responding wattmeters fiber optic light diffuser illumination for front panel nomenclature fanless convection cooling stainless steel chassis with super mirror finish 04.04.mc252.20k 35005800

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