McIntosh MR 73 Owner's Manual
  1. Manuals
  2. Brands
  3. McIntosh Manuals
  4. Tuner
  5. MR 73
  6. Owner's manual

McIntosh MR 73 Owner's Manual

Stereo solid state fm-am tuner
Hide thumbs Also See for MR 73:
Table of Contents

Advertisement

Quick Links

See also: Service Information
MR 73
PRICE $1.2 6

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MR 73 and is the answer not in the manual?

Questions and answers

Related Manuals for McIntosh MR 73

Summary of Contents for McIntosh MR 73

  • Page 1 MR 73 PRICE $1.2 6...

  • Page 3: Table Of Contents

    GUARANTEE Your purchase of a Mclntosh instrument shows that you are a careful discriminat- MR 73 ing buyer. One who is interested in quality performance, quality engineering, quality manufacturing, and long trouble-free equipment life. You can protect your in- vestment by spending a few minutes read- ing this owner's manual.

  • Page 4: Introduction

    This design gives protec- which do not need zero setting adjustments. tion against radiation or interference. The RF circuits of the MR 73 - A new computer designed filter to reduce noise from stations exceed the FCC requirements for suppression of oscillator radia- broadcasting subcarrier auxiliary music services.
  • Page 5 The level of muting desired can be adjusted by the muting level control on the top panel. Each of the two integrated circuits used in the FM-IF of the MR 73 Varying the muting control adjusts the threshold at which the muting contain 16 transistors, 3 zener diodes, 5 diodes and 23 resistors, all takes effect.
  • Page 6 The 16 volt regulator is the power heart of the MR 73. All signal purpose is to supress hetrodyning that occurs between adjacent stages throughout the unit are powered from this regulator. The AM carriers. 16 volt regulator is very elaborate in design, using a specially se- To increase the "pulling power"...

  • Page 7: If You're In A Hurry

    MODE SELECTOR— Select from AM broadcast, stereo FM broadcast, or mono FM without automatic stereo/mono switching. STEREO FILTER— Reduces noise on weak FM stereo broadcasts. MUTING—Eliminates the usual noise between FM stations. VOLUME/OFF—Turns the AC to the tuner on or off and adjusts volume to desired level.

  • Page 8: Performance Charts

    FM STATION LOG DIAL LOCATION ANTENNA REMARKS STATION FREQ. SCALE CITY, STATE DIRECTION MONO—STEREO-TIME-DATE...

  • Page 9: Specifications

    SPECIFICATIONS SCA FILTER: 50 dB down at 67 kHz to 74 kHz, 275 dB per octave slope. USEABLE SENSITIVITY: 2.5 microvolts at 100% AUTOMATIC MONO-STEREO SWITCH: Mclntosh de- modulation (±75 kHz deviation) for less than 3% veloped; all electronic automatic mono-stereo switch- total noise and harmonic distortion in accordance ing circuit.

  • Page 10: Installation

    To prepare the MR 73 for installation remove the plastic protective instrument is to be mounted. covering. Turn the MR 73 upside down so that it rests on its top on the shipping pallet. Remove the four plastic feet fastened to the bottom of the chassis.
  • Page 11 Insert the power cord through the opening. Carefully slide the MR 73 into the opening so the rails on the bottom of the equipment slide in the track of the mounting brackets. Continue to slide the instrument in until the front panel is against the cabinet panel.

  • Page 12: Front Panel Information

    19 kHz multiplex carrier is present AM — Connects the AM tuner section of the MR 73 to the output in the signal. The indicator will not light on noise pulses or inter- jacks.
  • Page 13 This allows only the more powerful stations to be heard at the MUTING IN setting. The AC switch is part of the VOLUME control. Turning the VOL- UME control totally counterclockwise turns the AC to the MR 73 AM SENSITIVITY OFF.

  • Page 14: Back Panel Information

    AC outlet. AM ANT SWITCH Adjusts the MR 73 circuit to match the particular type of AM an- tenna used. EXT. position is for a conventional antenna, usually of the outdoor type, from 50 to 150 feet in length. LOOP position is for the built-in Ferrite Loopstick.

  • Page 15: Typical Hookup

    TYPICAL HOOK UP FM ANTENNA AM ANTENNA POWER AMPLIFIER PREAMPLIFIER MR 73 GROUND AC LINE (OPTIONAL) AC LINE AC LINE RIGHT SPEAKER LEFT SPEAKER...

  • Page 16: Connecting

    50 to 150 feet in length. Suspend the wire in a straight line as high supplied with the MR 73, (2) an outdoor FM antenna, or (3) a VHF-TV as possible. Attach the wire at each end with suitable glass or antenna.

  • Page 17: Listening

    TUNING meter. When the STEREO indicator is lighted, the station LISTENING TO MONOPHONIC FM is broadcasting a 19 kHz carrier for stereo. The MR 73 will auto- Turn the MODE SELECTOR to FM MONO to listen only to mono- matically switch to stereo. If a station is broadcasting monophonic phonic FM.

  • Page 18: Guarantee

    Your MR-73 FM-AM tuner will give you many years of pleasant and satis- factory performance. If you have any questions concerning operation or maintenance please contact the dealer from whom you purchased this instrument or: — CUSTOMER SERVICE Mclntosh Laboratory Inc. 2 Chambers Street Binghamton, N.
  • Page 20 McINTOSH LABORATORY INC. 2 CHAMBERS ST., BINGHAMTON, N. Y. 13903 607-723-3512 Design subject to change without notice. Printed in U.S.A.

Table of Contents