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We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Our Testing Process for Amplifiers (Solid State) at SkyFi: Height is 9-7/16 inches (23.97cm) including feetĭepth is 14-13/16 inches (37.62cm) including the Front Panel and Knobsĩ4.5 pounds (42.87 kg) net, 108.5 pounds (49.22 kg) in shipping carton Maximum Intermodulation Distortion if instanta- neous peak output per channel does not exceed twice the rated output, for any combination of fre- quencies from 20Hz to 20,000Hz, with all channels operating is 0.005% Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is 0.005% Minimum sine wave continuous average power output is: 500 watts into 1 ohm load Minimum sine wave continuous average power output is: 500 watts into 4 ohm load Minimum sine wave continuous average power output per channel, all channels operating is:
#MCINTOSH MC 250 FOR SALE PDF#
Built-in Thermal Protection Circuits guard against overheating.Ĭlick here for a PDF copy of the McIntosh MC252 Owner's ManualĬlick here for a PDF copy of the McIntosh MC252 Service Manual
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McIntosh Sentry Monitor power output stage protection circuits ensure the MC252 will have a long and trouble free operating life.
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Please check out our full video on this amplifier: Would cost you over $6k to buy a new equivalent (yet inferior) amplifier today. This McIntosh amplifier appreciated in value by 88.5% while it was used and loved by its owner! Few if any other electronics manufacturers’ sell for more than the original price like McIntosh does.One of the most compact high power amps made by McIntosh, and one of the best looking in our opinion featuring 3D glass and heavy aluminum end caps. McIntosh sold the MC30 mono 30 watt tube amplifier for $198 in 1960 which is $1,590.72 in 2015 dollars. Here’s proof of how valuable their used equipment is today: They hold their value (or even increase in value) better than any other brand People love McIntosh unlike any other brand and here’s why: 1. They offer unparalleled sound and picture quality, extreme durability, and patented innovation unlike any other brand. The name “McIntosh” evokes images of black glass with green lettering, blue VU meters, and smooth steel.
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While other companies outsource their manufacturing, Mac continues to employ Americans to ensure their products meet high standards of quality. They carefully build every piece by hand at their factory in Binghamton, New York. Since 1949, McIntosh has made among the world’s best audio and video equipment. McIntosh McIntosh Labs American-made audio and video equipment