Introduction; Performance Features - McIntosh



LS340 Owner's Manual

Introduction

The McIntosh LS340 Loudspeaker System is designed for
Home Theater and Music Reproduction. It is a three-way
system with two 8 inch LD/HP
LD/HP midrange and one 1 inch dome tweeter. The LS340
is designed to work as a Left or Right (Main) Loudspeaker
in a Music System, or as a Main or Surround Loudspeaker
in a Home Theater System.
The LS340 Loudspeaker performance is equivalent to
the quality of McIntosh’s legendary line of Amplifiers,
Preamplifiers, Signal Processors and Signal Sources, without
imparting distortion or coloration of its own. It also comple-
ments the capabilities and the remarkably low distortion of
McIntosh Power Amplifiers.
Many of today’s loudspeakers are designed only for
Home Theater applications. Not so with the LS340. It is also
designed for the accurate reproduction of music. Motion pic-
ture sound effects, explosions, screams, and vehicle crashes
require a wide dynamic range and high sound levels. These
sounds are such that a speaker system having moderate dis-
tortion would reproduce them with little audible difference.
This is not true with the reproduction of music. Music is by
nature and definition harmonious. To reproduce it accu-
rately, all forms of distortion, both harmonic and
intermodulation, must be kept to a minimum. This has been
the result of the design of the new McIntosh LS340 Loud-
speaker System. Each loudspeaker element and crossover
component has been carefully designed for durability, effi-
ciency, and above all, low distortion. The McIntosh LS340
Loudspeaker System will reproduce music accurately and
function as an excellent Home Theater Loudspeaker.

Performance Features

•
Gold Plated Input Connectors
The LS340 input connectors are gold plated for superior
corrosion resistance and high electrical conductivity.
•
Acoustic Edge-Hole Elimination
An “edge-hole” is a severe dip in the high frequency
response of a speaker system, caused by the relative
distance of the dome tweeter to the edge of the speaker
cabinet. If the distance to the edge of the cabinet is the same
on both sides of the dome tweeter, cancellation of the sound
occurs at a specific frequency. McIntosh guards against this
phenomenon with a special tweeter mounting that eliminates
the “edge-hole” effect. A specially designed tweeter bezel
and perforated grille, mask the tweeter mounting to maintain
a symmetrical appearance.
4
1 woofers, one 6-1/2 inch
Introduction and Performance Features
•
Patented LD/HP Technology
The McIntosh Low Frequency and Midrange Loudspeaker
Elements feature the patented LD/HP motor structure. This
design, when compared to conventional Loudspeaker
Elements, reduces distortion significantly. It also increases
power handling and efficiency.
•
Shielded Magnetic Field
The LS340 may be used in Home Theater Installations near
a television receiver or monitor without causing the
television image to degrade. McIntosh has designed special
shielding around the magnetic structure of the LS340
Loudspeaker Elements to prevent interference.
•
High Power Handling
The Loudspeaker Elements and crossover components of
the LS340 are all chosen for use with powerful amplifiers up
to 350 watts.
•
High Efficiency
The Loudspeaker Elements used in the LS340 Loudspeaker
System have also been designed for high efficiency. As a
result any McIntosh Power Amplifier, even our smallest, will
provide satisfying room filling sound.
•
Automatic Overload Protection
The LS340 has built-in Loudspeaker Element Protection in
the form of three automatic resetting solid-state devices as a
part of the crossover network.
•
Flared Acoustic Bass Port
The Acoustic Bass Port in the LS340 has flared front and
rear openings to eliminate air movement noise.
1
LD/HP Pat. No. 5,151,943