McIntosh XR27 owner manual Introduction and Performance Features

Figure 6

Introduction and Performance Features

dition of distortion to the music at low frequencies. The Midrange and High Frequency Crossover Networks utilize both Second and Third Order Crossover Designs. The Ca- pacitors and Inductors used are of a high current capacity design and include low loss (ESR) Polypropylene and Mylar types. The Crossover Networks utilize self resetting high current Poly-Switches to provide an extra measure of protection.

The enclosure is an important part of the XR27 Loud- speaker System and consists of a massive extruded alumi- num enclosure. Refer to figure 6. The front mounting board is

made of 3/4 inch thick MDF that houses the four 8 inch Woofers,

one 6-1/2 inch Midrange and the five one inch inline Tweeter Drivers. Refer to figure 7. It has multiple front to

Figure 7

back internal braces to form a dampened rigid Structure. The XR27’s small footprint allows for a variety of differ- ent placements in a room.

Performance Features

•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 five one inch Dome Tweeters use Neodymium-Iron- Boron Alloy that has a high flux density per unit of volume and helps to keep the weight to a minimum.

•Bessel Function Array

The individual tweeter amplitudes and phase relationships of the five tweeter array are adjusted to act as a high frequency point source

•Shielded Magnetic Field

The XR27 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 XR27 Loudspeaker Elements to prevent interference.

•High Power Handling

The Loudspeaker Elements and Crossover Components of the XR27 are all chosen for use with powerful amplifiers up to 1,200 watts.

•Versatile Operation and Placement

In additional to the regular connections, the XR27 Loud- speaker System provides separate connections for Bi-Am- plification hookups. The Crossover Network has provi- sions to ensure the best performance when the Loud- speaker System is mounted in a wall.

•Gold Plated Input Connectors

The XR27 input connectors are gold plated for superior corrosion resistance and high electrical conductivity.

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