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Summary of Contents for McIntosh MR65B
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Page 1: Table Of Contents
FM STEREO MR65B TUNER INTRODUCTION TECHNICAL DESCRIPTION. FRONT PANEL INFORMATION BACK PANEL INFORMATION INSTALLATION CONNECTING Stereophonic FM Multiplex Monophonic FM Remote Amplifiers Off-The-Air Recording Antenna Connections TABLE OF CONTENTS OPERATING INSTRUCTIONS. Stereophonic FM Multiplex Monophonic FM External Stereo ADJUSTMENTS Muting Threshold... -
Page 2: Introduction
FM listening pleasure is included in years of the finest possible FM reception, and the MR65B tuner. It is perfect for use in a will become a highly valued part of your stereo music system where nothing less than home music system. - Page 3 Two pairs of audio output jacks are on the A new type of mechanical tuning assembly back panel. One pair of jacks is controlled gives the MR65B an extremely smooth fly- only by the front panel volume control. The wheel tuning action. The tuning capacitor is other pair of jacks is controlled only by the driven directly, and in turn drives the pointer.
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Page 4: Front Panel Information
2—Rectifiers, High Voltage Power Supply. Power Consumption 70 watts, 105 to 125 volts, 50 to 60 cycles. FRONT PANEL INFORMATION Figure 1. MR65B Front Panel. TUNING DIAL The tuning dial is calibrated in both megacycles and a 0-100 logging scale. Tun-... - Page 5 The Automatic Frequency Control (AFC) circuit makes FM tuning easier. It also elimi- nates the possibility of the tuner drifting off the station. The AFC circuit in the MR65B is electronically delayed in its action. This is an exclusive Mclntosh development. As the tuning dial is moved, the AFC circuit is tem- porarily cut off.
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Page 6: Back Panel Information
VHF TV Antenna is used for nect the tuner to a stereo control preampli- both the MR65B and a TV set. The antenna is fier which has its own master volume con- automatically switched to the MR65B when trol. -
Page 7: Installation
L66 finished wood cabinet. through from the back side of the panel. All The MR65B may be mounted in panels up measurements for panel cutout location are to 1 inch in thickness. If the panel is at least made on the back side of the panel. - Page 8 Remove the four 10-32 x % inch screws the tuner chassis to the shelf. If the cabinet holding the MR65B to the shipping board. is to be moved about, it is recommended Save these screws since you will need them that the tuner chassis be secured to the if your cabinet shelf is ½...
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Page 9: Connecting
6-11/16 inches high including with complete instructions and all necessary mounting feet by 13¾ inches deep including hardware for installing the MR65B tuner. The tuner front panel and control knobs. CONNECTING Use the left hand pair of tuner AUDIO... - Page 10 Figure 11. MR65B Typical Hook-up.
- Page 11 A convenient flexible indoor dipole (300 TO TV SET ohm) antenna is supplied with the MR65B Figure 13. Connection of 75 Ohm Antenna to MR65B. tuner. This antenna is easy to install and is An unbalanced 75 ohm FM antenna may suitable for good FM reception in urban or also be used with the MR65B.
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Page 12: Operating Instructions
Set the OUTPUT ADJ con- If the external tuner has a volume con- trols to their mid positions. Make final volume trol, adjust it to equal the volume level adjustments to balance the tuner volume of the MR65B. -
Page 13: Adjustments
AUTO FREQ control to MIN. The volume con- trol has no effect on this adjustment. Turn the tuning dial to a position NOT on or near a The MR65B ultrasonic muting circuit station. Allow the tuner to operate for ap- suppresses all noise between stations. It also proximately 5 minutes. -
Page 14: Dial Panel Lights
Switch the 50-60 CPS preamplifier back to the tuner. Set the 70 WATTS MR65B MODE SELECTOR to FM and tune in a local station. Turn the tuner OUTPUT ADJ PANEL controls until the levels of each channel are... -
Page 15: Guarantee
Your Mclntosh MR65B tuner will give you many years of pleas- ant and satisfactory performance. If you have any questions con- cerning the operation or maintenance of this tuner, please contact CUSTOMER SERVICE MCINTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK Our telephone number is 723-5491. - Page 16 LABORATORY INC. 2 CHAMBERS STREET, BINGHAMTON, N. Y. Made in U.S.A. Phone-Area Code 607-723-5491 Printed in U.S.A. 1M-AA107-236 9-15...
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