![]() Then the tuner is thoroughly tested in our lab utilizing our professional Sencore SG80 FM Generator, which allows us to generate a reference FM signal of any frequency and amplitude, and then measure the resulting tuner output on our Sencore PR81 or oscilloscope.įinal testing involves pushing actual music thorough the receiver. If there are balanced inputs available they will be also be tested. The receiver then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. If there is an issue, it will usually be noticeable at this point. Finally, we run the receiver to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. 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. Best of all it has the signature sweet McIntosh sound we've all come to love. The glass is super clean too!įunctions include: dual phono inputs, individual left and right tone controls for bass and treble, and convenience outlets for powering other devices.īuilt like a tank and likely to outlive us all. There are no sigs of rust of corrosion anywhere. The Faceplate is immaculate, and all of the knobs are shiny and pristine. It's finished in a gorgeous champagne colored front panel with aluminum knobs and glass. That's $4,600 in today's dollars when you factor inflation. It was produced from 1967-1973 with a retail price at the time of $599.00. This is a hybrid model from McIntosh comprised of a solid state amplifier and tube tuner section. This is a full featured receiver that's perfect for a starter McIntosh System or your office. Simply the best looking 1700 to come into our shop. ![]()
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