McIntosh MR 71 Operations Instructions Page 1

FM STEREOTUNERMR 71CONTENTSTABLE OF CONTENTSOWNER'S MANUALINTRODUCTIONTECHNICAL DESCRIPTIONFRONT PANEL INFORMATIONBACK PANEL INFORMATIONINSTALLAT

MODE SELECTORPOWER OFFTurns off the tuner AC power and the ACoutlet on the tuner back panel.MONOProvides monophonic FM at both pairs ofleft and right

BACK PANEL INFORMATIONTP 2Test point TP 2 is provided for tuner circuitalignment. It is also used in conjunction withthe Mclntosh Ml 2 or Ml 3.OUTPUT

CONNECTINGAUDIO OUTPUTSUse the FIXED OUTPUT jacks (left-handpair of jacks next to OUTPUT ADJ) to connectto a conventional control preamplifier whichha

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arms as straight as possible. The dipoleantenna is somewhat directional. It should bepositioned for best reception of the desiredstations.Experimentin

ADJUSTMENTSMUTING THRESHOLDThe MR 71 ultrasonic muting circuit sup-presses all noise between stations. It sup-presses all weaker stations not strongen

FM STATION LOGSTATIONDIALFREQ.LOGSCALELOCATIONCITY, STATEANTENNADIRECTIONREMARKSMONO-STEREO-TIME-DATE

FM STATION LOGSTATIONDIALFREQ.LOGSCALELOCATIONCITY, STATEANTENNADIRECTIONREMARKSMONO— STEREO— TIME— DATE

FM STATION LOGSTATIONDIALFREQ.LOGSCALELOCATIONCITY, STATEANTENNADIRECTIONREMARKSMONO— STEREO— TIME— DATE

2 CHAMBERS STREET, BINGHAMTON, N. Y.Made in U.S.A.Phone-Area Code 607-723-5491038-029BE022003Printed in U.S.A.LABORATORY INC.

THANK YOUJudging from the stereo equipment you own, you rank highamong discriminating music listeners. You are probably nofreshman when it comes to st

TECHNICAL DESCRIPTIONThe MR 71 tuner has a 6DS4 high-grainNuvistor for the first RF amplifier. The Nuvis-tor (triode) operates into a second triode tu

Your Mclntosh MR71 tuner will give you many years of pleasantand satisfactory performance. If you have any questions concern-ing the operation or main

MPX stereo indicator lamp. The transistor iscontrolled by a noise-rejecting differentialdetecting bridge circuit. The circuit discrimi-nates between n

SPECIFICATIONSUseable Sensitivity2.5 microvolts at 100% modulation (±75KCdeviation) for less than 3% total noise andharmonic distortion in accordance

5BLOCK DIAGRAM MR 71

FRONT PANEL INFORMATIONTUNING DIAL SCALESThe MR 71 has two dial scales, the 88 to108 scale marked in megacycles and the0-100 logging scale. The dial s