McIntosh MR-7082 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
kill
and
liquids
enclosure openings.
to
spill
into
the
instrument
through
13. Power Lines - Locate any outdoor antenna away
from power lines.
14. Outdoor Antenna Grounding - If an outdoor
antenna is connected to the antenna terminal, be
sure the antenna system is grounded to provide
some protection against voltage surges and built
up static charge.
In the U.S.A., section 810 of the National Electrical
Code, ANSI/NFPA No. 70-1987, provides information on the proper ground for the mast and supporting structure, ground for the lead-in wire to an
antenna discharge unit, and size of ground conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements
for the grounding electrode.
For ground wire:
a) Use No. 10 AWG (5.3 mm2) copper No. 8 AWG
(8.4 mm2) aluminum, No. 17 AWG (1.0 mm2)
copper-clad steel, bronze wire, or larger as ground
wire.
b) Secure antenna lead-in and ground wires to
house with stand-off insulators spaced from 4 feet
(1.22 meters) to 6 feet (1.83 meters) apart.
c) Mount antenna discharge unit as closely as
possible to where lead-in enters house.
d) Use jumper wire not smaller than No. 6 AWG
(13.3 mm2) copper or equivalent when separate
antenna grounding electrode is used.
15. Nonuse Periods - Unplug the power cord from the
AC power outlet when left unused for a long
period of time.
16. Damage Requiring Service - Service must be per-
formed 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.
17. Servicing - Do not attempt to service beyond that
described in the operating instructions. All other
service should be referred to qualified service
personnel.
18. Grounding or Polarization - Do not defeat the in-
herent design features of the polarized plug. Nonpolarized line cord adaptors will defeat the safety
provided by the polarized AC plug.
19. CAUTION: TO PREVENT ELECTICAL 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.
Note to CATV system installer:
This reminder is provided to call the CATV system
installer's attention to Article 820-22 of the NEC
that provides guidelines for proper grounding
and, in particular, specifies that the cable ground
shall be connected to the grounding system of
the building ,as close to the point of cable entry
as practical.
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
DECOUVERT.
AUCUNE
PARTIE
A
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 suffi-
cient magnitude to constitute a risk of electric shock
to persons.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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) in-
structions in the literature accompanying the
appliance.
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
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 instru-
ment for repair.
Copyright 1987 © by Mclntosh Laboratory Inc.
1
Contents
INTRODUCTION 3
INSTALLATION 4, 5
Your MR 7082 FM/AM Tuner will give
you many years of satisfactory performance. If you have any questions, please
contact:
HOW TO CONNECT 6, 7
HOOK-UP DIAGRAM 8
FRONT PANEL CONTROLS 9, 10
PERFORMANCE LIMITS 11
PERFORMANCE CHARTS 12
TECHNICAL DESCRIPTION 13, 14
BLOCK DIAGRAM 15
FM STATION LOG 16
MclNTOSH THREE YEAR SERVICE CONTRACT
An application for A THREE YEAR SERVICE CONTRACT is included with this manual.
CUSTOMER SERVICE
Mclntosh Laboratory Inc.
2 Chambers Street
Binghamton, New York 13903-9990
Phone: 607-723-3512
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 modified or
damaged as a result of unauthorized repair the
service contract will be cancelled. Damage by im-
proper use or mishandling is not covered by the
service contract.
4. The service contract is issued to you as the
original purchaser. To protect you from
misrepresentation this contract cannot be transferred to a second owner.
5. Units in operation outside the United States and
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.
2
The Mclntosh MR 7082 is a high quality FM/AM 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 7082 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 7082.
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 7082 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 7082
FM/AM Tuner, the easiest to operate yet with extensive
useful features.
Your Mclntosh MR 7082, 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 7082 apart from
the ordinary are:
The advanced FM/AM tuner design of the MR 7082
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 sta-
tions for 5 seconds each.
The sound enhancing MONOPLUS audio processor
presents, on AM, an aural picture that is more 'stereo
like' in quality and dimension. On noisy, weak FM sta-
tions, MONOPLUS provides reduced noise and retains a
broad stereo-like sound.
SIGNAL LOCKED LOOP (SLL) guarantees center
channel tuning at all times regardless of any variations
of the frequency of the broadcast station.
Once tuned, AUTOMATIC FREQUENCY LOCK
assures rock solid adherence to the center of the station's broadcasting frequency by tracking any variations
that might occur on either FM or AM.
Virtually automatic tuning on AM. The ease of FM
tuning has been extended to AM with a new, Mclntosh
exclusive, AM automatic center tuning circuit.
As in FM, when using the preset touchbuttons, the
auto-tune circuit searches for the center of the AM
broadcast frequency. When there, AM-AFL locks to that
center point for drift-free, distortion-reducing, center
channel tuning.
Tape record high quality FM broadcasts 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
delivers STEREO FM with lower distortion, lower noise,
and better separation.
The most useful and flexible AM antenna system
will suit your particular installation. In noisy AM locations, a noise reducing, noise cancelling, shielded loop
will provide ideal input signal. In a remote location, a
conventional 'long wire' antenna can be used, and in
strong signal areas, a simple short piece of wire (6' long)
will be adequate.
A rear panel connector provides adaptability for
complete remote control with the addition of a
Mclntosh infrared REMOTE CONTROL system.
All in all, your selection of the MR 7082 will be reinforced by your day-to-day use of this superb instrument.
Good listening.
INTRODUCTION 3
LOCATION
The MR 7082 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 1 ½ inches (3 cm] of space above the
tuner so as not to interfere with a cooling air flow.
CONVENIENT, SIMPLE AND SECURE.
The PANLOC system of installing equipment conveniently and securely, is a product of Mclntosh research.
By depressing the two PANLOC buttons on the front
panel, the instrument can be locked firmly in place or
unlocked so that the chassis can slide forward, giving
you easy access to the top and rear panels.
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 of component parts. With adequate
ventilation, the instrument can be mounted in any position. When not installed in a cabinet, the plastic feet
must not be removed so that adequate air flow is provided through the bottom of the chasis. You should
allow enough clearance so that cool air can enter at the
bottom of the cabinet and be vented from the top. The
recommended minimum space for installation is 15 in-
ches (38.1 cm) deep, 17 inches (43.2 cm) wide, and 6
inches (15.2 cm) high.
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
unit from its plastic bag and place it upside down on
the shipping pallet, then unscrew the four plastic feet
from the bottom of the chassis.
2. Mark the Cabinet Panel.
Place the mounting template in position on the cabinet
panel where the instrument is to be installed, and tape
it in place. 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 perpen-
dicular 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 op-
posite 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.
4. Saw the Panel Cutout
Saw, carefully, on the inside of the penciled lines. First
make the two long cuts and then the two short cuts.
After the rectangular opening has been cut out, use a
file to square the corners and smooth any irregularities
in the cut edges.
5. Install the Mounting Strips
In the hardware package you will find two mounting
strips, and two sets of machine screws. For panels that
are less than 1/2 inch (12.7 mm) thick, use the 3/4 inch
(19.1 mm) screws; for panels that are more than 1/2
inch (12.7 mm) thick, use the 1-1/4 inch (31.8 mm)
screws.
Starting at the right-hand side of the panel, insert a
screw of the proper length into the center hole in the
panel, marked B on the template. On the back of the
panel, align a mounting strip with the holes in the panel
and tighten the screw until the screwhead is pulled into
the wood.
Repeat this procedure to attach the mounting strip to
the left side of the panel.
4 INSTALLATION
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