McIntosh MR-7083 Owners manual

IMPORTANT SAFETY INSTRUCTIONS

THESE INSTRUCTIONS ARE TO

PROTECT YOU AND THE MclNTOSH
INSTRUMENT. BE SURE TO
FAMILIARIZE YOURSELF WITH THEM.

1. Read all instructions - Read the safety and
operating instructions before operating the
instrument.

2. Retain Instructions - Retain the safety and
operating instructions for future reference.

3. Heed warnings - Adhere to warnings and
operating instructions.

4. Follow Instructions - Follow all operating and use
instructions.

WARNING: TO REDUCE RISK OF FIRE OR
ELECTRICAL SHOCK, DO NOT EXPOSE THIS
INSTRUMENT TO RAIN OR MOISTURE.

5. Power Sources - Connect the power supply only to
the type described in the operating instructions or
as marked on the unit.

6. Power-Cord Protection - Route power-supply cords
so that they are not likely to be walked on or
pinched by items placed upon or against them,
paying particular attention to cords at plugs,
convenience receptacles, and the point where they
exit from the instrument.

7. Ventilation - Locate the instrument for proper
ventilation. For example, the instrument should
not be placed on a bed, sofa, rug, or similar
surface that may block ventilation openings; or,
placed in a built-in installation, such as a bookcase
or cabinet, that may impede the flow of air
through the ventilation openings.

8. Heat - Locate the instrument away from heat
sources such as radiators, heat registers, stoves, or

other appliance (including amplifiers) that produce

heat.

9. Wall or Cabinet Mounting - Mount the instrument

in a wall or cabinet only as described in the
owners manual.

10. Water and Moisture - Do not use the instrument
near water - for example, near a bathtub,

washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, etc.

11. Cleaning - Clean the instrument by dusting with a

dry cloth. Clean the panel with a cloth moistened
with a window cleaner.

12. Object and Liquid Entry - Do not permit objects to

fall and liquids to spill into the instrument through
enclosure openings.

13. Nonuse Periods - Unplug the power cord from the
AC power outlet when left unused for a long

period of time.

14. Damage Requiring Service - Service must be
performed by qualified service personnel when:
A. The power supply cord or the plug has been
damaged; or

B. Objects have fallen, or liquid has been spilled
into the instrument; or

C. The instrument has been exposed to rain; or

D. The instrument does not appear to operate nor­mally or exhibits a marked change in performance;

or

E. The instrument has been dropped, or the
enclosure damaged.

15. Servicing - Do not attempt to service beyond that
described in the operating instructions. All other

service should be referred to qualified service

personnel.

16. Grounding or Polarization - Do not defeat the

inherent design features of the polarized plug.
Non-polarized line cord adaptors will defeat the
safety provided by the polarized AC plug.

17. CAUTION: TO PREVENT ELECTRICAL SHOCK DO

NOT USE THIS (POLARIZED) PLUG WITH AN

EXTENSION CORD, RECEPTACLE OR OTHER
OUTLET UNLESS THE BLADES CAN BE FULLY
INSERTED TO PREVENT BLADE EXPOSURE.

ATTENTION: POUR PREVENIR LES CHOCS
ELECTRIQUES PAS UTILISER CETTE FICHE
POLARISEE AVEC UN PROLONGATEUR, UNE PRISE
DE COURANT OU UNE AUTRE SORTIE DE
COURANT, SAUF SI LES LAMES PEUVENT ETRE
INSEREES A FOND SANS EN LAISSER AUCUNE PAR­TIE A DECOUVERT.

The lightning flash with arrowhead, within an
equilateral triangle, is intended to alert the user to
the presence of uninsulated "dangerous voltage"
within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric
shock to persons.

The serial number, purchase date, and Mclntosh

Laboratory Service Contract number are important to

you for possible insurance claim or future service.

Record this information here.

Serial Number

CAUTION: TO PREVENT THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK). NO
USER-SERVICABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.

The exclamation point within an equilateral triangle

is intended to alert the user to the presence of

important operating and maintenance (servicing)
instructions in the literature accompanying the
appliance.

Purchase Date

Service Contract Number

Upon application, Mclntosh Laboratory
provides a Service Contract to the original
purchaser. Your Mclntosh Authorized
Service Agency can expedite repairs when

you provide the Service Contract with the

instrument for repair.

Contents

INTRODUCTION 3

INSTALLATION 4, 5

HOW TO CONNECT 6, 7

CONNECTING DIAGRAM 8

FRONT PANEL CONTROLS 9, 10

PERFORMANCE LIMITS 11

PERFORMANCE CHARTS 12

TECHNICAL DESCRIPTION 13, 14

BLOCK DIAGRAM 15

Take Advantage of 3 Years of

Contract Service. . .
Fill in the Application NOW.

Your MR 7083 AM/FM Digital Tuner will give you

many years of satisfactory performance. If you have

any questions, please contact,

CUSTOMER SERVICE

Mclntosh Laboratory Inc.
2 Chambers Street

Binghamton, New York 13903-9990
Phone: [phone]

MclNTOSH THREE YEAR SERVICE CONTRACT

An

application

The terms of the contract are:

1. If the instrument covered by this contract
becomes defective, Mclntosh will provide all parts,
materials, and labor needed to return the
measured performance of the instrument to the

original performance limits free of any charge. The
service contract does not cover any shipping costs
to and from the authorized service agency or the
factory.

2. Any Mclntosh authorized service agency will
repair all Mclntosh instruments at normal service
rates. To receive the free service under the terms

of the service contract, the service contract
certificate must accompany the instrument when
taken to the service agency.

3. Always have service done by a Mclntosh

authorized service agency. If the instrument is

for A

THREE

YEAR SERVICE

CONTRACT

4. The service contract is issued to you as the

5. Units in operation outside the United States and

is

included

modified or damaged as a result of unauthorized
repair the service contract will be cancelled.

Damage by improper use or mishandling is not
covered by the service contract.

original purchaser. To protect you from
misrepresentation this contract cannot be

transferred to a second owner.

Canada are not covered by the Mclntosh Factory

Service Contract, irrespective of the place of

purchase. Nor are units acquired outside the USA
and Canada, the purchasers of which should
consult with their dealer to ascertain what, if any,

service contract or warranty may be available

locally.

with

this manual.

Copyright 1991 © by Mclntosh Laboratory Inc.

2

The Mclntosh MR 7083 is a high quality AM/FM
Tuner whose design has been governed by insistence
on high performance with long life, great flexibility
and sensitivity.

You will derive the greatest enjoyment and most
satisfaction from your MR 7083 when you understand
its operations and functions. Your time invested now

will return added value to you because you will get
the best results from your MR 7083.

Mclntosh has earned world renown for its techno­logical contributions for improved sound. When you
bought Mclntosh, you bought not only high techno­logy, you bought technological integrity proven by

time. The Mclntosh MR 7083 Tuner is continuing
evidence of Mclntosh technological superiority and

integrity.

Music reproducing instruments that carry the

Mclntosh name have always been designed for
technological leadership and to maintain the
Mclntosh reputation for durability, long life, and best
sound. Mclntosh has had to earn the foremost

reputation for quality performance. Mclntosh has
provided user-oriented facilities and appearance, and

Mclntosh design provides for ease of maintenance or

repair. These fundamental elements are incorporated
in the Mclntosh MR 7083 AM/FM Tuner, the easiest

to operate yet with extensive useful features.

Your Mclntosh MR 7083, above all others, will

deliver the best sound and the greatest ease of use
with a high degree of flexibility.

Some of the features that set the MR 7083 apart

from the ordinary are:

The advanced AM/FM tuner design of the MR 7083
displays the station frequencies digitally. Stations are
selected easily in any one of these ways: A. use the

manual tuning knob, B. use the SCAN up or down
touchbuttons, C. use the preset station touchbuttons
or, D. use the SEARCH which will preview the preset
stations for 5 seconds each.

The sound enhancing SPATIAL audio processor
provides
in quality and dimension. On noisy, weak FM sta-

tions or AM stations, SPATIAL provides reduced

noise and retains a broad stereo-like sound.

High quality tape recordings of FM broadcasts can
be made without the interference that stereo trans­missions can cause. Carefully designed suppression

circuits eliminate the potential for stereo carrier

noise when making "off the air" tape recordings.

A unique Phase Locked Loop Multiplex decoder

an

aural

picture that

is

more "stereo

like"

delivers
noise, and better separation.

will suit your particular installation. A low-impedance

loopstick will, in most local areas, provide AM

signals while rejecting noise and interference. In

noisy AM locations, an external noise reducing, noise
canceling, shielded loop will provide ideal input
signal. In a remote location, a conventional 'long
wire' antenna can be used.

Mclntosh IR Remote Control system.

reinforced by your day-to-day use of this superb

instrument. Good listening.

STEREO

The most useful and flexible AM antenna system

The MR 7083 can be remote controlled from a
All in all, your selection of the MR 7083 will be

FM

with

lower distortion, lower

INTRODUCTION 3

The trouble-free life of an electronic instrument is

greatly extended by providing sufficient ventilation to

prevent the build-up of high internal temperatures
that cause deterioration. Allow enough clearance so
that cool air can enter at the bottom of the cabinet
and be vented from the top. With adequate
ventilation the instrument can be mounted in any

position. The recommended minimum space for
installation is 15 inches (38.1 cm) deep, 17 inches

(43.2 cm) wide, and 6 inches (15.2 cm) high.

The MR 7083 may be installed in a Mclntosh
cabinet or custom installed in furniture of your
choice. Always provide adequate ventilation. Never
place it above heat generating components such as
high powered amplifiers. Provide 1½ inches (3 cm) of
space above the preamplifier so as not to interfere
with a cooling air flow.

CUSTOM INSTALLATION

The PANLOC system of installing equipment
conveniently and securely is a product of Mclntosh
research. The PANLOC buttons on the front panel
will lock the unit firmly in place when they are
turned approximately one quarter turn clockwise. A
counterclockwise turn of the PANLOC buttons

unlocks the chassis from its mounting.

To install the instrument in a Mclntosh cabinet,
follow the instructions that are enclosed with the
cabinet. For any other type of installation, follow
these instructions:

1. Unpack from Carton
Open the carton and remove the PANLOC brackets,

hardware package, and mounting template. Remove

the instrument from its plastic bag and place it

upside down on the shipping pallet. Unscrew the

four plastic feet from the bottom of the chassis.

2. Mark the Cabinet Panel
Tape the mounting template in position on the
cabinet panel where the instrument is to be

installed. The broken lines that represent the outline
of the rectangular cutout also represent the outside
dimensions of the chassis. Make sure these lines
clear shelves, partitions, or any equipment. With the

template in place, first mark the six A and B holes

and the four small holes that locate the corners of

the cutout. Then, join the four corner markings with

pencil lines, using the edge of the template as a
straightedge.

3. Drill Holes
Use a drill with a 3/16 inch (5 mm) bit held
perpendicular to the panel and drill the six A and B
holes. Then, using a drill bit slightly larger than the

tip of your saw blade, drill one hole at each of two
diagonally opposite corners. The holes should barely
touch the inside edge of the penciled outline. Before
taking the next step, make sure that the six A and B

holes have been drilled.

MOUNTING TEMPLATE

4 INSTALLATION