McIntosh XRT30 - Manual (Page 5)

5
Introduction and Performance Features
Performance Features
Figure 7
levels. This prevents the addition of distortion to the music
at low frequencies. The High Frequency Crossover Net-
work utilizes both
Second and Third
Order Crossover
Designs. Refer to
figure 7. It also uses
Capacitors and In-
ductors with high
current capacity.
The Capacitors
used include low
loss (ESR) Polypro-
pylene and Mylar
types. Both Cross-
over Networks also
utilize self resetting
high current Poly-
Switches to provide an extra measure of protection.
The enclosures are an important part of the XRT30
Loudspeaker System. The Bass Section Cabinet is con-
structed from 1
inch and 1-1/2 inch
thick MDF with
laminated hard-
woods and veneers.
Internally, the cabi-
net is reinforced
with multiple MDF
Cross-Bracing
Trusses all de-
signed to help in-
sure that the cabi-
net will not vibrate.
Refer to figure 8.
The High Fre-
quency Column
Section utilizes a
massive extruded
aluminum enclosure that houses the 30 four inch Midrange
and 25 one inch Tweeter Drivers. Refer to figure 9. It also
has multiple front
to back internal
braces to form a
dampened rigid
Column Struc-
ture. The
Column’s small
footprint allows for a variety of different placements in a
room.
Figure 8
• Patented LD/HP Technology
The McIntosh Low Frequency and Midrange Loudspeaker
Elements feature the patented LD/HP Magnetic Circuit
Design. This design, when compared to conventional
Loudspeaker Elements, reduces distortion significantly. It
also increases power handling and efficiency.
•
Neodymium-Iron-Boron Alloy Magnets
The 30 four inch Midranges and 25 one inch Dome Tweet-
ers all use this Alloy. The Neodymium-Iron-Boron Alloy
has a high flux density per unit of volume and helps to
keep the Column weight to a minimum.
•
Shielded Magnetic Field
The XRT30 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
XRT30 Loudspeaker Elements to prevent interference.
•
High Power Handling
The Loudspeaker Elements and Crossover Components of
the XRT30 are all chosen for use with powerful amplifiers
up to 1,200 watts.
•
Superior Imaging
Locating the Column of Tweeters between the two
Columns of Midranges helps to generate a symmetrical
horizontal polar response for superior imaging.
•
Versatile Operation and Placement
In additional to the regular connections, the XRT30 Loud-
speaker System provides separate connections for Bi-Am-
plification and Tri-Amplification hookups. The Crossover
Network has provisions to ensure the best performance
when the High Frequency Column is mounted in a wall.
•
Gold Plated Input Connectors
The XRT30 input connectors are gold plated for superior
corrosion resistance and high electrical conductivity.
Figure 9