3
Customer Service
Technical Assistance
Please Take A Moment
Thank You
Copyright 2000
ã
by McIntosh Laboratory, Inc.
The serial number, purchase date and McIntosh dealer
name are important to you for possible insurance claim or
future service. The spaces below have been provided for
you to record that information:
Your decision to own this McIntosh LS340 Loudspeaker
System ranks you at the very top among discriminating mu-
sic listeners. You now have The Best. The McIntosh dedi-
cation to Quality, is assurance that you will receive many
years of musical enjoyment from this unit.
Please take a short time to read the information in this
manual. We want you to be as familiar as possible with all
the features and functions of your new McIntosh.
Serial Number:
Purchase Date:
Dealer Name:
If it is determined that your McIntosh product is in need of
repair, you can return it to your dealer. You can also return
it to the McIntosh Laboratory Service Department. For as-
sistance on factory repair return procedure, contact the
McIntosh Service Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-3515
Fax: 607-723-1917
If at any time you have questions about your McIntosh
product, contact your McIntosh dealer who is familiar with
your McIntosh equipment and any other brands that may
be part of your system. If you or your dealer wish addi-
tional help concerning a suspected problem, you can re-
ceive technical assistance for all McIntosh products at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-1545
Fax: 607-723-3636
Safety Instructions .............................................................. 2
Thank You and Please Take a Moment ............................. 3
Technical Assistance and Customer Service ....................... 3
Table of Contents and General Notes ................................. 3
Introduction ........................................................................ 4
Performance Features ........................................................ 4
Dimensions ....................................................................5 - 6
Installation .......................................................................... 7
How to Connect ................................................................. 8
Front and Rear Views ......................................................... 9
Specifications.................................................................... 10
Packing Instruction ........................................................... 11
Table of Contents
General Notes
1. It is very important that loudspeaker cables of adequate
size be used in your music system, to ensure that there will
be no power loss or heating. Cable size is specified in
Gauge numbers or AWG, (American Wire Gauge). The
smaller the Gauge number, the larger the wire size:
If your loudspeaker cables are 25 feet (7.62m) or less,
use at least 18 Gauge (AWG) wire size or larger.
If your loudspeaker cables are 50 feet (38.1m) or less,
use at least 16 Gauge (AWG) wire size or larger.
If your loudspeaker cables are 100 feet (76.2m) or less,
use at least 14 Gauge (AWG) wire size or larger.
The Loudspeaker Connection Terminals can accept up
to 12 Gauge (AWG) wire.
2. For additional connection information, refer to the
owners manual(s) for any component(s) connected to the
LS340 Loudspeaker.
3. The LS340 has built-in speaker protection in the form of
three automatic resetting solid-state devices as part of the
crossover network. One protects the tweeter, one the
midrange and the other the woofers. The characteristics of
this protection are that a certain amount of overdrive is
allowed but extended periods of overdrive will trigger
protection. If an obvious lack of high or low frequencies is
noticed, the Loudspeaker Protection Device may have
activated. Sound output from the Loudspeaker Element
affected will be reduced when the protection is triggered.
The protection devices will automatically reset when the
volume control is reduced significantly and kept low until
the output of the affected Loudspeaker Element returns to
normal.