Boston Acoustics CRC Manuel utilisateur
CRC
Center Channel Speaker
Boston Compact Speakers
2
volume
0
1
2
3
4
5
6
7
8
9
10
11
12
crossoverHz crossover polarity
50 150
80 120 set none 0° 180 °
Boston
Placement
Place the center channel speaker above or
below the television monitor, as close as
possible to the center of the screen. It is not
necessary to angle the speaker to face the
listeners. The speaker is magnetically
shielded with MagnaGuard®and will not
affect the television’s picture. Use the four
self-adhesive rubber feet (provided) to
protect the TV’s finish and reduce vibration.
Specifications
Frequency Response (±3dB) 80–20,000Hz
Recommended Amplifier Power 15–100 watts
Nominal Impedance 8 ohms
Sensitivity [1 watt (2.83v) at 1m] 89dB
Bass Unit 41⁄2" (115mm) copolymer
Passive Radiator 41⁄2" (115mm) copolymer
Tweeter 1" (25mm) Kortec™
Crossover Frequency 2,500Hz
Dimensions (HxWxD) 151⁄2x 5 x 61⁄2" (394 x 127 x 165mm)
Weight 10 lbs (4.5kg)
Finish Black ash vinyl veneer with charcoal gray grille cloth
Description
Continuing in the tradition of our critically acclaimed Compact Reference series, the second generation CRC is a
compact, versatile, high performance center channel speaker designed to deliver accurate, natural reproduction. Its wide
and even dispersion ensures that the sound will remain consistent and uniform for listeners throughout the room, assuring
that everyone has the “best seat.”
Special care has been taken to optimize the speakers’ components for maximum performance: The bass unit utilizes a
phase plug that conducts heat away from the voice coil, thus increasing power handling and maximizing output. The
woofer cones and surround geometry were designed and optimized with Boston’s Finite Element Analysis (FEA) computer
modeling technology, for strong bass and smooth midrange.
High frequencies are handled by Boston’s exclusive 1-inch (25mm) Kortec tweeter mounted in an innovative new wide
dispersion projection tweeter baffle. This remarkable driver produces an extremely smooth, flat response well beyond the
audible range. An aluminum heatsink attached to the tweeter’s backplate dissipates heat quickly and efficiently, assuring
cool, trouble-free operation – even at very high power levels.
All the drive units are designed at Boston’s Peabody, Massachusetts facility using state-of-the-art computer-design
programs, and are built on Boston’s proprietary production lines to an incredible ±1dB—perhaps the industry’s tightest
tolerance. Within the cabinets are specially tapered braces that lock the front and rear baffles together and provide
strength and rigidity, thus minimizing cabinet resonances.The CRC also features MagnaGuard®magnetic shielding for safe
placement near any sized television set.
Connection
WARNING: To prevent an electrical shock hazard, always switch off the amplifier or receiver when making
connections to the speaker.
We recommend 18-gauge, or thicker, wire for runs up to 25 feet (8m) and 16-gauge, or thicker, wire for longer
runs. Separate the first few inches of the wire conductors. Strip off 1⁄2inch (12mm) of insulation from the ends
of each speaker wire to expose the two conductors and tightly twist the wire strands.
3
IMPORTANT: Typically, one side of the
wire is smooth. Connect this side to the
–(black) connection. The other side has a
rib or stripe. Connect this side to the
+(red) connection.
surround sound receiver/amplifier
left
front center
front right
front
CRC center channel speaker
Setting Up Your Home Theater System
Volume levels: To obtain the best home theater effect, match the sound levels of each speaker. Home
theater systems include a test signal that simplifies this level matching. Refer to the instructions provided
with your surround sound electronics.
Distance adjustment: Digital surround sound electronics permits the listener to adjust the relative timing
of the center channel sound. This adjustment affects the quality of the front image of the system. Refer to
the instructions provided with your surround sound electronics.
Bass management—speaker selection: Surround sound electronics provides adjustments or menus that
permit the listener to direct bass signals to specific channels for the best effect. Generally, with all surround
systems, the center channel mode should be set to SMALL. This setting will divert low bass to the front left
and right speakers (which typically have greater bass capability than the center speaker) and will result in
the greatest total system bass output. Also, if your system includes separate subwoofers, the SMALL setting
ensures that the subwoofers will receive the most bass under all conditions.
Bass management—crossover frequency selection: Some surround sound electronics provides a choice
of crossover frequencies (the frequency below which bass is diverted to the left, right, or subwoofer
speakers). If a choice is provided, 80Hz will give the best overall results.
Systems with Dolby®Pro Logic®only: On older systems with Dolby Pro Logic only, use the NORMAL or
SMALL settings for the center speaker. The PHANTOM setting, which presumes you do not have a center
channel speaker, should not be used.
Using the five-way binding
posts: The binding posts permit
easy connection to banana
plugs, spade lugs and bare wire.
Insert the wire in the hole and
tighten.
Connect the speaker to the center front terminals
of your surround sound receiver or amplifier.
IMPORTANT: Be sure to connect +to +(red) and
–to –(black).
Boston, Boston Acoustics, and MagnaGuard are registered
trademarks of Boston Acoustics, Inc. Dolby Pro Logic is a registered
trademark of Dolby Laboratories Licensing Corporation.
Specifications subject to change without notice.
© 2001 Boston Acoustics, Inc.
042-001288-1
Listening Levels and Power-Handling
The power recommendation for the speaker assumes you will operate the amplifier in a way that will
not produce distortion. Even rugged systems like the CRC can be damaged by an amplifier if it is
producing distortion.
If you hear a harsh, gritty noise, turn down the volume. Prolonged or repeated operation of your speaker
with a distorted signal from the amplifier can cause damage that is not covered by the warranty.
Limited Warranty
For five years from the date of purchase, Boston Acoustics will repair for the original owner any defect in
materials or workmanship that occurs in normal use of the speaker, without charge for parts and labor.
Your responsibilities are to use the system according to the instructions supplied, to provide safe and secure
transportation to an authorized Boston Acoustics service representative, and to present proof of purchase in
the form of your sales slip when requesting service.
Excluded from this warranty is damage that results from abuse, misuse, accidents, shipping, or repairs or
modifications by anyone other than an authorized Boston Acoustics service representative.
This warranty is void if the serial number has been removed or defaced.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
If Service Seems Necessary
First, contact the dealer from whom you purchased the speakers. If that is not possible, write to:
Boston Acoustics, Inc. 300 Jubilee Drive Peabody, MA 01960 U.S.A.
We will promptly advise you of what action to take. If it is necessary to return your speaker to the factory,
please ship it prepaid. After it has been repaired, we will return it freight prepaid in the U.S.A. and Canada.
300 Jubilee Drive
Peabody, MA 01960 USA
978-538-5000
www.bostonacoustics.com
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