Figure 3
2LD/HP Pat. No. 5,151,943
Figure 6
Figure 2
Figure 5
Figure 1

Introduction

McIntosh Acoustic Engineers have refined the line source Column Loudspeaker concept to provide superior quality midrange and high frequency sound reproduction in a full range system.

The High Fre- quency Section utilizes a patented Column Design1 with multiple four inch Midrange LD/HP2 Magnetic Circuit Design Drivers and one

inch soft dome Tweeters. Refer to figure 1. Since the audio power fed to a column is distributed among all the drivers, each driver does not have to work as hard, resulting in greater power handling capability and a dramatic reduction in distortion. The Sound Waves from the Column produce a Cylindrical Wave Front with a stable symmetrical hori- zontal sound dispersion to minimize undesirable floor and ceiling re-

flections that could detract from

astable sound im- age. Refer to figure 2.

In the illus- tration the

Loudspeaker on the left side produces a Cylindrical Wave Front and the Loudspeaker on the right side produces a conventional Spherical Wave Front.

The Low Frequency Section of the System consists of two 12 inch Woofers. They have a large magnet assembly and long

cone ex- cursions with very low levels of har- monic dis- tortion and frequency response down to 16Hz. Re- fer to fig-

1COLUMN Pat. No. 4,267,405

ure 3. The Woofer also incor-

LD/HP

porates McIntosh’s Patented

 

LD/HP2 Magnetic Circuit De-

Conventional

sign with shielding to greatly

 

reduce any external magnetic

 

field. Extensive investigating

 

and testing resulted in a new

 

design concept which utilizes

 

a pair of aluminum shorting

 

sleeves in the magnetic cir-

Figure 4

cuit. Refer to figure 4. The sleeves virtually eliminate the negative influence of the fluctuating voice coil field on the permanent magnet field. This results in

lower distortion due to more linear mag- netic flux in the

voice coil gap. Re-

fer to figure 5. Ad- ditional benefits are

less volume com- pression due to im- proved heat transfer

through the sleeves and a cooler operating voice coil. Both measurements, as well as critical listening, reveal ten times less distortion than previous designs. A good example of this low distortion is incredible smoothness and clarity in the reproduction of the human voice.

The Crossover Networks used in the XRT30 Loud- speaker Sys-

tem are de- signed to en- sure an even frequency re- sponse over the entire au- dible range. The Low Fre- quency Cross- over Network is a Third Or- der design uti- lizing Capaci- tors and In- ductors with high current

capacity. Refer to figure 6. There are three different types of low loss (DCR) Inductors in the network, each one cho- sen not to exhibit any core saturation even at high power

4

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Image 4
McIntosh XRT30 owner manual Introduction

XRT30 specifications

The McIntosh XRT30 is a remarkable loudspeaker that embodies the high standards of audio engineering synonymous with the McIntosh brand. Renowned for its advanced technology and exceptional performance, the XRT30 provides a listening experience that caters to audiophiles and music enthusiasts alike.

One of the standout features of the XRT30 is its unique design, which includes a slender, elegant cabinet that minimizes the distortion commonly associated with conventional loudspeakers. This innovative design helps to achieve a more accurate sound reproduction, ensuring that each note is rendered with striking clarity and precision.

The speaker utilizes a proprietary driver array that combines several advanced technologies. The high-frequency section consists of specially designed silk-dome tweeters that provide a smooth and extended response, reaching frequencies up to 40 kHz. This makes for crystal-clear highs that bring out the most intricate details in any recording.

In addition to the high-frequency drivers, the XRT30 is equipped with several midrange drivers arranged in a unique configuration. This array is engineered to create a broad soundstage, allowing listeners to feel immersed in the music. The midrange drivers are vital for delivering the warmth and presence of vocals and acoustic instruments, ensuring that every performance feels dynamic and engaging.

The low-frequency performance of the XRT30 is powered by dual 12-inch woofers. These woofers are optimized for deep bass response and are housed in a carefully calibrated enclosure that enhances their performance. The result is a robust low-end that remains tight and controlled, even at high volume levels.

Overall, the XRT30 is designed to handle high power levels without distortion, thanks to its robust construction and high-efficiency drivers. Each speaker is hand-crafted, reflecting McIntosh’s commitment to excellence in both sound quality and build quality.

With its elegant finish, the XRT30 adds a touch of sophistication to any listening space. The combination of advanced design, quality materials, and meticulous craftsmanship make it a worthy addition to any high-end audio system. For those who seek an unparalleled listening experience, the McIntosh XRT30 presents a compelling option that delivers on both performance and aesthetic appeal.