McIntosh XR27 Скачать руководство пользователя страница 4

4

McIntosh Acoustic Engineers have refined the Loud-
speaker System concept to provide superior sound quality
in a versatile enclosure with five different installation
methods.

The Low Frequency Section of the System consists of

four 8 inch Woofers. They have a large magnet assembly
and long cone excursions with very low levels of harmonic
distortion and frequency response down to 80Hz. Refer to
figure 1. The Woofer also incorporates McIntosh’s Pat-

ented LD/HP

Magnetic Circuit Design with shielding to

greatly reduce any external magnetic field. Extensive in-
vestigating and testing re-
sulted in a new design con-
cept which utilizes a pair of
aluminum shorting sleeves
in the magnetic circuit. Re-
fer to figure 2. The sleeves
virtually eliminate the nega-
tive influence of the fluctu-
ating voice coil field on the
permanent magnet field.
This results in lower distor-
tion due to more linear magnetic flux in the voice coil gap.
Refer to figure 3. Additional benefits are less volume com-
pression due to
improved heat
transfer through
the sleeves and a
cooler operating
voice coil. Both
measurements, as
well as critical
listening, reveal
ten times less dis-
tortion than previ-
ous designs.

Introduction

Figure 3

Figure 2

LD/HP

Conventional

1

LD/HP Pat. No. 5,151,943

Figure 5

Figure 1

Figure 4

The 6-1/2 inch Midrange Driver also incorporates

McIntosh’s Patented LD/HP

Magnetic Circuit Design with

shielding to greatly reduce any external magnetic field.
Refer to figures 1, 2 and 3. The low distortion of this
Midrange Driver results in the incredible smoothness and
clarity in the reproduction of the human voice. The five 1
inch soft dome Tweeters are inline and connected to pro-
duce a Bessel Function Array. Refer to figure 4. The indi-

vidual tweeter amplitudes and phase relationships are ad-
justed so the array acts as a high frequency point source.
One advantage of such an arrangement is a very smooth
and even acoustic polar response. This allows the listener
to move off axis without suffering a change in high fre-
quency output. The use of multiple tweeters, combined
with a heat sink, also provides greatly increased power
handling at high frequencies.

The Crossover Networks used in the XR27 Loud-

speaker System are designed to ensure an even frequency
response over the entire audible range. The Low Fre-
quency Crossover Network is a Third Order design utiliz-
ing Capacitors and Inductors with high current capacity.
Refer to figure 5. Low Loss (DCR) Inductors in the Low

Frequency Network, are chosen not to exhibit any core
saturation even at high power levels. This prevents the ad-

Содержание XR27

Страница 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 FAX 607 724 0549 Owner s Manual XR27 XR27 Loudspeaker System...

Страница 2: ...s such as vases are placed on the equipment 11 Use only with the cart stand tripod bracket or table specified by the manufac turer or sold with the equipment When a cart is used use caution when movin...

Страница 3: ...onnect using three amplifiers 16 Specifications 18 Packing Instruction 19 Table of Contents Important Information Caution The XR27 weight is 84 pounds 38kg and requires two or more persons to safely h...

Страница 4: ...duction Figure 3 Figure 2 LD HP Conventional 1 LD HP Pat No 5 151 943 Figure 5 Figure 1 Figure 4 The 6 1 2 inch Midrange Driver also incorporates McIntosh s Patented LD HP1 Magnetic Circuit Design wit...

Страница 5: ...s 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 si...

Страница 6: ...s Front View of the XR27 46 5 8 118 43cm 13 1 16 33 18cm 9 3 16 23 34cm 13 1 16 33 18cm 7 17 78cm 7 8 2 22cm 1 11 16 4 29cm 2 1 8 5 40cm 4 7 8 12 38cm 10 25 4cm 19 5 8 49 85cm 10 1 8 25 72cm Rear View...

Страница 7: ...f the shipping carton Refer to figure 10 Installation Methods The XR27 may be installed using one of five installation methods listed below 1 Placing the XR27 horizontally on a flat surface using the...

Страница 8: ...16 and 17 for the correct opening location 5 Attach the other L Mounting Bracket to the Top of the Loudspeaker using the long Pivot Screw and Steel Bushing into the correct opening based on the desire...

Страница 9: ...e Wall Hanger Bracket instead of the openings allowing rotation of the Loudspeaker 5 Use a suitable wall stud finder to verify a proper mounting location for the Loudspeaker on the wall 6 Attach the W...

Страница 10: ...oudest bass is best rather listen for booming a lack of articulation as well as a balance over the whole spectrum to assure the bass will not drown out the other parts of the music Ex periment with va...

Страница 11: ...side access hole and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out Refer to figures 23 24 25 Connections using a single Amplifier McIntosh...

Страница 12: ...is firmly clamped into the terminal so the wires cannot slip out Refer to figures 23 24 25 How to Connect using two Amplifiers 1 Remove the jumpers between the LOW and MID HIGH Binding Posts and save...

Страница 13: ...13 How to Connect using two Amplifiers...

Страница 14: ...Nominal Frequency Response 80Hz 20kHz Sensitivity 89dB 2 8V 1m Crossover Frequencies 275Hz 2 800Hz Power Handling 1200 Watts Maximum Overall Dimensions 13 1 16 inches 33 18cm Height 46 5 8 inches 118...

Страница 15: ...ipping carton and interior parts only if they are in good serviceable condition If a shipping car ton or any of the interior part s are needed please call or write Customer Service Department of McInt...

Страница 16: ...Intosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without...

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