Woofers with Patented LD/HP Technology
The McIntosh Low Frequency Loudspeaker Elements feature the patented LD/HP Magnetic Circuit Design. This design, when compared to conventional Loudspeaker Drivers, reduces distortion significantly. It also increases power handling and efficiency. 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. The polypropylene cone with a rubber surround has a four layer copper voice coil and is rigid to perform as a near perfect air piston. 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. This performance level rivals woofers twice the size of the XR100 woofer.
Neodymium-Iron-Boron Alloy Magnets
The 10 two inch Midrange Drivers and the three-quarter inch Dome Super Tweeter all use this Alloy. The 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.
Dual Midrange Crossover Points
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. Eight of the 10 Midrange Drivers reproduce the lower two octaves of midrange frequencies. The remaining two Midrange Drivers reproduce the upper two octaves of midrange frequencies and are located directly adjacent to the tweeter. This maintains wide dispersion with a stable sound image throughout the upper midrange frequencies.
Low Harmonic and Intermodulation Distortion
The XR100 Loudspeaker System is capable of reproducing the full dynamic range of a symphony orchestra with very low audible distortion of any kind.
Low Frequency Port
The XR100 Loudspeaker System utilizes a vertical port with a rear opening to increase bass output, reduce distortion and improve the overall efficiency of the Loudspeaker.
High Power Handling
The Loudspeaker Elements and Crossover Components of the XR100 are all chosen for use with amplifiers up to 600 watts, yet can be driven with a 75 watt amplifier.
The XR100’s built-in speaker protection incorporates four automatic resetting solid-state devices in the crossover network. One protects the tweeters, one each for the low and upper midrange drivers and one for the woofers.
Locating the Super Tweeter between the multiple Midrange drivers generates a symmetrical polar response for superior imaging. The Midrange and Super Tweeter Drivers are precisely aligned on the precision machined mounting plate of 5/8 inch thick aluminium with a Brushed Champagne Gold Finish.