5
Introduction
McIntosh Acoustic Engineers have achieved in
the design of the ML1 Loudspeaker System, a level
of high performance. The ML1 provides superior
spaciousness sound reproduction with unusual sound
stage depth in a full range system.
The enclosure is an important part of the ML1
Loudspeaker System. It has multiple front to back and
side to side internal braces to form a dampened rigid
Loudspeaker enclosure. The Loudspeaker’s small
footprint allows for a variety of different placements
in a room.
Dome Tweeter, a 2 inch soft dome upper
midrange, two 4 inch lower mid/woofers,
and a 12 inch high performance woofer.
Since the audio power is distributed
among all the drivers, each driver does not have to
work as hard, resulting in greater power handling
capability, dramatic reduction in distortion and
greater dynamic range.
The Low Frequency Section of the System consists
of a newly designed 12 inch Woofer.
The new 12 inch
woofer incorporates Mc-
Intosh’s patented LD/HP
®
Magnetic Circuit Design.
Finite Element Analysis
and testing resulted in a
design concept which uti-
lizes aluminum sleeves in
the magnetic circuit.
The sleeves greatly reduce the negative influence
of the fluctuating voice coil field on the permanent
magnet field. This results in lower distortion due to
more linear magnetic flux in the voice coil gap.
Additional benefits are less volume compression
due to improved heat transfer through the sleeves and
a cooler operating voice coil. Both measurements, as
well as critical listening, reveal ten times less distor-
tion than previous designs. A good example of this
low distortion is incredible smoothness and clarity in
the reproduction of the human voice.
LD/HP
Conventional
The Crossover Network used in the ML1 Loud-
speaker System is designed to ensure an even fre-
quency response over the entire audible range. The
Second Order Designed Network utilizes capacitors
and inductors with high current capacity. The ML1
-
work. The type of inductor used in each section of the
crossover network has been chosen for high linearity,
even at high power levels. This prevents distortion of
the music at any frequency. The capacitors used are
self resetting high current PTC Fuses to provide an
extra measure of protection.
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