Boston Acoustics VR-MC User manual
New Product Announcement
VR-MC
Center Channel Loudspeaker
The VR-MC is a new high performance center channel
speaker from Boston Acoustics that sonically and cos-
metically compliments our highly acclaimed VR-M moni-
tors. Its accurate, wide-range response delivers clear dia-
log and dynamic on-screen sound effects with
unmatched clarity and articulation.
The VR-MC is designed and manufactured at our
Peabody, Massachusetts facility using state-of-the-art,
design software and is built on our own proprietary pro-
duction lines. Like all Boston speakers, it is built to exact-
ing standards, widely respected as among the industry's
tightest tolerances.
The VR-MC combines an active 51⁄4" (133mm) bass driver
and a 51⁄4" (133mm) passive radiator to deliver low fre-
quency extension to 65Hz. Both active and passive driv-
ers are built with cast aluminum baskets. The woofers are
coupled with a black anodized 1" (25mm) aluminum
dome VR tweeter. This remarkable driver produces an
extremely smooth, flat response well beyond the audible
range. A die-cast aluminum heatsink attached to the
tweeter's backplate dissipates heat quickly and efficient-
ly, assuring cool, trouble-free operation even at very high
power levels. The combination makes for a perfect sonic
match for the VR-M monitors. The drivers are positioned
very close to each other for smooth, uniform radiation in
both the horizontal and vertical planes for maximum cov-
erage of the listening area.
Cosmetically, the VR-MC maintains the unique appear-
ance of the VR-M monitors. The cabinet features a solid
wood top in either cherry or black ash, and real wood
veneer sides. The result is a luxurious piece of furniture
for the top of your TV that is gracefully tapered to expose
only a thin strip of wood above the baffle when viewed
directly from the front. The cabinet is as functional as it is
beautiful, featuring heavy internal bracing for strength and
rigidity, eliminating unwanted resonance.
The VR-MC features dual
gold-plated, 5-way binding
posts, allowing for bi-wiring
or bi-amping connections
with virtually any cable for
optimum sound. The
VR-MC also features
Boston’s MagnaGuard®
magnetic shielding. This
technology assures com-
plete compatibility in all
home theater systems by
preventing unwanted
television interference. VR-M Family with PV1000 Subwoofer
300 Jubilee Drive, Peabody, MA 01960 978-538-5000 Fax: 978-538-5199
Covered by patents issued and/or pending. Specifications subject to change without notice.
MagnaGuard, Boston and Boston Acoustics are registered trademarks of Boston Acoustics, Inc.
© 2000 Boston Acoustics, Inc. All rights reserved.
19 1⁄
2
"
6 1⁄
4
"
Specifications
FREQUENCY RESPONSE (±3dB) 65–20,000Hz
RECOMMENDED AMPLIFIER POWER 15–150 watts
NOMINAL IMPEDANCE 8 ohms
SENSITIVITY [1 watt (2.83v) at 1m] 89dB
BASS UNIT 51⁄4" (133mm) copolymer
TWEETER 1" (25mm) anodized aluminum dome
PASSIVE RADIATOR 51⁄4" (133mm) copolymer
CROSSOVER FREQUENCY 3000Hz
WEIGHT 14 lbs. (6.4kg)
DIMENSIONS (H x W x D) 61⁄4x 191⁄2x 63⁄4" (159 x 495 x 171mm)
FINISH Charcoal gray grille cloth with
cherry or black ash wood veneer sides
and solid cherry or black ash wood top
VR Tweeter with
Amplitude Modification Device
Our sophisticated VR tweeter may be the smoothest, most accurate
high-frequency driver available today. We use a 1-inch (25mm) dome
made from anodized pure aluminum. We chose anodized pure
aluminum for the diaphragm for several reasons: Compared
to a soft dome, aluminum is equally light and more rigid;
the added stiffness improves off-axis dispersion and
consequently the total radiated power above12kHz.
Compared to other hard dome materials such as titanium,
phenolic, and polycarbonate, our pure aluminum dome has
a resonance beyond the audible range (25kHz) and is far
better damped.This tweeter is unrivaled in its ability
to accurately track the input signal.
To further optimize the tweeter’s response, we
use our patented Amplitude Modification Device
(AMD).The AMD is an innovative acoustic tuning
device, positioned in front of the aluminum dome.
It consists of five miniature ducts of slightly varying
lengths precisely tuned to create an extremely smooth
response.Their tuning is so critical, manufacturing is done to watchmak-
ers standards—the tweeter's AMD is accurate to ±.001inch (.025mm)!
Ferrofluid-cooled voice coil
Acoustic damping
High-energy neodymium magnet
Die-cast aluminum heatsink
Faceplate with integral AMD
Surround
1-inch (25mm) anodized aluminum dome
Voice coil carrier
Terminal
Low carbon steel top plate
Yoke
Tweeter response
without AMD
Boston's AMD
creates smooth,
natural response
1kHz 10kHz 20kHz 40kHz
0 dB
+5 dB
-5 dB
1kHz 10kHz 20kHz 40kHz
0 dB
+5 dB
-5 dB
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