Boston Acoustics VRS Pro, Руководство пользователя, Страница: 2 / 8

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Specifications
Frequency Response (±3dB) 80–20,000Hz
Recommended Amplifier Power 15–150 watts
Nominal Impedance 8 ohms
Sensitivity [1 watt (2.83v) at 1m] 86dB
Bass Unit 5
1
⁄
4
" (135mm) copolymer
High-Frequency Driver Dual 2
1
⁄
2
" (65mm) polymer-treated paper
Crossover Frequency 350Hz
Dimensions (HxWxD) 14
1
⁄
4
x 4
5
⁄
8
x 6
1
⁄
2
" (360 x 116 x 165mm)
Weight /each 7 lbs (3kg)
Finish Black or white
Description
The VRS Pro is a THX ® -certified, high-output, diffuse-field
surround speaker. It provides the rear channel surround
sound effects with AC-3 ® , THX and ProLogic ® decoding
electronics. Its low- and high-frequency response charac-
teristics comply with the requirements for AC-3 and THX
systems.
The VRS Pro cabinet is sculptured to aim sound along the
walls, rather than directly at the listener, and to blend with the
room’s decor. Frequencies from 80 to 350Hz are handled
by a 5
1
⁄
4
" (135mm) bass unit. Frequencies above 350Hz
are handled by a pair of 2
1
⁄
2
" (65mm) high-frequency dri-
vers, one firing forward and the other backward. Gold-plated five-way binding posts allow the con-
nection of virtually any speaker cable. Straightforward mounting of the speaker on any wall or ceil-
ing can be easily accomplished with the enclosed brackets.
A diffuse-field surround sound speaker is the best for reproducing the enveloping surround sound
experienced in a movie theater. The theater employs an array of surround loudspeakers (often our
Boston A70T theater speakers) distributed around the sides and rear of the theater. Typically, the
array is split into two halves, left and right. The listener hears sound from many speakers, which pro-
duces a three-dimensional sensation for the surround sound. A diffuse-field speaker achieves the
same effect by directing the sound initially away from the listener and permitting it to be reflected
from the walls and ceiling. The sound then arrives at the listener from a multitude of directions and
simulates the loudspeaker array in a movie theater.