3 Upper Frequency Drivers: McIntosh's XR50 bookshelf loudspeaker
utilizes 3 upper-frequency drivers. There is one 0.75" titanium dome tweeter and
two 2" midrange inverted titanium dome drivers. The tweeter and midrange drivers are precisely aligned on the precision machined mounting plate of 0.625" inch thick aluminum.
Their unique layout and crossover design combine high power
handling with precise sound-staging. Locating the tweeter between the two
midrange drivers generates a symmetrical polar response for superior imaging.
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.
Dual Midrange Drivers: There are several benefits when using multiple
Midrange drivers. First, there is a substantial increase in power handling
capacity far greater than a single larger diameter midrange driver. Second, due
to mutual acoustic coupling there is an increase in output volume while at the
same time a reduction in audible distortion.
Neodymium-Iron-Born Alloy Magnets: The 0.75" tweeter and two
2" midrange drivers all employ a neodymium-iron-born alloy magnet.
Neodymium-iron-boron alloy has the highest flux density per unit of volume. This
allows for a smaller physical size driver and thus closer driver-to-driver
placement for improved dispersion.
Patented LD/HP Woofer: The low frequency section of the
XR50 bookshelf loudspeaker consists of a newly designed McIntosh patented LD/HP
6" woofer. The McIntosh patented LD/HP woofer offers increased power handling
and produces incredible deep bass with low distortion. The woofer features a
polypropylene cone with a rubber surround and has a four layer copper voice
coil, so it can perform as a near perfect air piston. The rear vent through the
magnetic assembly offers improved heat dissipation. The die-cast basket has an
open air area under the voice coil/spider assembly to prevent displacement
noise. All together these advances in woofer design construction and materials
produce the very important first several octaves of music, with a high degree of
accuracy and superb transient response.
Precision Crossover Network: The crossover network used in
the XR50 loudspeaker is designed to ensure an even frequency response over the
entire audible range. The 2nd order designed network utilizes capacitors and
inductors with high-current capacity. The Capacitors used are the low loss (ESR)
types. The low-loss (DCR) 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 crossover network also utilizes
self resetting high current PTC fuses to provide an extra measure of protection.
Bass Port: The McIntosh XR50 bookshelf loudspeaker utilizes
a vertical port with a rear opening to increase bass output, reduce distortion
and improve the overall efficiency of the loudspeaker.
Real Wood Veneer, Rigid Enclosure: The XR50 loudspeaker
enclosure is constructed with non-parallel internal sides to reduce internal
standing waves. It has multiple front-to-back and side-to-side internal braces
to form a dampened rigid loudspeaker enclosure. The XR50 is available in various
real wood veneers with a high gloss polyester finish. Fine gloss wood finishes
are offered in Black or Red Walnut. These high-gloss finishes and fine cabinetry
will be a welcome addition to even the most elegant homes.
Magnetic Grille: The custom designed molded loudspeaker
front grille is covered with a neutral black cloth and is secured to the speaker
cabinet using neodymium magnets. The magnetically attached grill exhibits nearly
perfect acoustic transparency. The design of the XR50 loudspeaker took into
account the acoustic characteristics of the front-panel grille and it should be
attached to the loudspeaker for the best sonic performance.
Gold-Plated, Binding-Post Terminals: The bookshelf
loudspeaker features McIntosh Patented gold-plated, binding-post terminals to
receive high current power & audio signal from your power amplifier, integrated
amplifier, or receiver. These binding post terminals will accept large diameter
wire (up to 10AWG), banana plugs (single only), and spade lugs.
Applications: The McIntosh XR50 bookshelf loudspeaker is
sleek and contemporary in appearance while producing full-range audio sound. The
XR50 bookshelf speaker is designed for both music and home theater systems, and
can fill medium to large rooms with full-range sound. Amplifiers from 75 to 300 watts are
appropriate power for the XR50 speaker.
Mounting Options: The bookshelf loudspeaker is designed to be placed
vertically on a stand, shelf, desk, table-top, or other flat surface. It does
not provide a keyhole slot, threaded insert, or integrated bracket to wall-mount
Placement: Loudspeaker placement in a room can greatly
affect performance. Placement near a wall, corner, floor, ceiling or any
intersecting surfaces will reinforce or diminish some bass frequencies. Try
various locations by listening to music containing continuous bass and finding a
location where there is an over all musical balance in the sound and the bass
content does not dominate. There should be an unobstructed area in front of the
Loudspeaker of at least 30 either side from the center axis for the best
performance. The distance between the loudspeakers and the listener to the
loudspeakers should form an acute isosceles triangle. If the speakers are too
far apart relative to the listener, some imaging can be lost. The bookshelf
speaker should also be placed as close to ear level as possible.
Front-Panel Logo Illumination: The even Illumination of the
front-panel "McIntosh logo is accomplished by the combination of custom designed
light diffusers and extra long-life light emitting diodes (LEDs).
Power Control: The Power Control Input (3.5mm) supplies
power to illuminate the XR50's McIntosh Logo, while the Power Control Output
(3.5mm) supplies power for remote turn-on of additional Components.
Loudspeaker Protection: The XR50's built-in speaker
protection incorporates three automatic resetting solid-state devices in the
crossover network. One protects the tweeters, one for the midrange drivers, and
one for the woofers.