McIntosh MAC 4280 Owners Manual

Page 2

l "tilitZQJRT/SINT SAFETY INSTRUCTIONS

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Read all instructions - Read the safety and oper»
ating instructions before operating the instrument.
Retain instructions - Retain the safety and oper-
ating instructions for future reterence.

Heed warnings » Adhere to warnings and oper-
ating instructions

Follow Instructions - Follow all operating and use
instructions.

VVARNINC: TO REDUCE RISK OF FIRE OR ELEC-
TRICAL SHOCK, DO NOT EXPOSE THIS INSTRUe
MENT TO RAIN OR MOISTURE.

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

Power-Cord Protection - Route power-supply cords
so that they are not likely to be walked on or pin-
ched by items placed upon or against them, pay-
ing particular attention to cords at plugs, conve-
nience receptacles, and the point where they exit
from the instrument.

Ventilation - Locate the instrument for proper ven-
tilation. 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 ven-
tilation openings.

Heat - Locate the instrument away from heat
sources such as radiators, heat registers, stoves, or
other appliance (including amplifiers) that produce
heat.

Wall or Cabinet Mounting - Mount the instrument
in a wall or cabinet only as described in the
owners manual.

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.

Cleaning - Clean the instrument by dusting with a
dry cloth. Clean the panel with a cloth moistened
with a window cleaner.

Object and Liquid Entry - Do not permit objects to
fall and liquids to spill into the instrument through
enclosure openings.

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Power Lines - Locate any outdoor antenna away
from power lines.

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. 701987, provides informa-
tion on the proper ground for the mast and sup-
porting structure, ground for the lead-in wire to an
antenna discharge unit, and size of ground con-
ductors, location of antenna-discharge unit, con-
nection to grounding electrodes, and requirements
for the grounding electrode.

For ground wire:

a) Use No. 10 AWC (5.3 mm?) copper No. 8 AWG
(8.4 mmz) aluminum, No. 17 AWC (1.0 mmz)
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 mm?) copper or equivalent when separate
antenna grounding electrode is used.

Page 4

Contents

INTRODUCTION 4
HOW TO CONNECT 5, 6, 7, 8
FRONT PANEL 9, 10, 11
PERFORMANCE LIMITS 12, 13
PERFORMANCE CHARTS 14, 15, 16
TECHNICAL DESCRIPTION 17, 18, 19

BLOCK DIAGRAMS

20, 21, 22, 23

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Your MAC 4280 Remote Control FM/AM Receiver will
give you many years of satisfactory performance. If
you have any questions, please contact,

warn «,zywy:

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An application for A THREE YEAR SERVICE CONTRACT is included with this manual.

The terms of the contract are:

1 If the instrument covered by this contract
becomes defective, McIntosh 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 McIntosh authorized service agency will
repair all McIntosh instruments at normal service
rates. To receive the free service under the terms
of the service contract, the service contract cer-
tificate must accompany the instrument when
taken to the service agency

3 Always have service done by a McIntosh authoriz-
ed 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 transfer-
red to a second owner.

5. Units in operation outside the United States and
Canada are not covered by the McIntosh Factory
Service Contract, irrespective of the place of pur-
chase. 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.