McIntosh MR-78McIntosh MR-78 In excellent condition, with brand new glass. In good working order. Images at this external link: http://soundsbydave.net/mr78/mr78.html No returns. There will be a $30 handli...400.00
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McIntosh MR-78 ~ in great shape! [Expired]
In excellent condition, with brand new glass.
In good working order.
Images at this external link:
There will be a $30 handling charge. This is to ensure proper packaging.
Multiple selectivity, normal, narrow and super narrow, switchable from the front panel. An elegant solution to a tough problem. Switching is done by means of diodes using DC switching; an ideal way to handle a difficult RF problem. A two position RF selectivity diode switching circuit for low and high gain antennas adds a useful parameter that is unique. One pair of balanced high level inputs and balanced outputs for all six outputs.
Linear phase (constant delay) IF amplifier for low distortion at even high selectivity and low distortion. Patented two eight pole filters are selectable as well as a four pole multi element crystal in the super narrow position.
A phase linear bridge discriminator provides distortionless conversion from FM to audio and exhibits a capture ratio close to 0dB. No active elements are used, providing a driftless, ideal detector.
Five element tuning capacitor improves RF front end characteristics; more tuned circuits for better selectivity. Silver plated chassis and RF coils for better shielding, lower losses and higher Q circuits.
Highest spurious rejection 100dB (IHF) and highest image rejection 110dB (88 to 108 MHz). This means you receive the stations at only the right place on the dial. You don't receive the same stations, or some mixture, as you tune across the dial.
McIntosh developed a special detecting circuit used in the multiplex section. An advantage of this circuit is the elimination of the critical adjustments necessary with commonly used matrixing circuits. The circuit detects the L - R sidebands, then automatically matrixes the recovered information with the L - R carrier signal. This yields the left and right program output with maximum separation.
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