Boston Acoustics cr57 Brochure
©2004 Boston Acoustics, Inc. All Rights Reserved. Boston, Boston Acoustics, the Boston Acoustics logo, Kortec, and MagnaGuard are registered trademarks, and Deep Channel, and Your Sound
Solution are trademarks of Boston Acoustics, Inc. All other trademarks are the property of their respective holders. Specifications are subject to change without notice.
Solution are trademarks of Boston Acoustics, Inc. All other trademarks are the property of their respective holders. Specifications are subject to change without notice.
Boston Acoustics, Inc., 300 Jubilee Drive, Peabody, MA 01960 USA
Your Sound Solution
™
Versatility
Whether you are building a home theater, upgrading your stereo
system, or adding sound to your favorite room, Boston CR has a speaker
that is perfect for you. A variety of sizes and finishes makes CR ideal for
your family room, bedroom, theater room or whole house music
system. Extremely versatile, Boston CR speakers are at home on a
bookshelf, a floor stand, or mounted to the wall. And, for added
placement flexibility, the CRC7 can be mounted horizontally and/or
vertically around a flat panel TV. All CR speakers have rotating logos
and built-in keyhole mounts for extreme placement flexibility.
For precise positioning, use the optional CRB mounting bracket.
Whether you are building a home theater, upgrading your stereo
system, or adding sound to your favorite room, Boston CR has a speaker
that is perfect for you. A variety of sizes and finishes makes CR ideal for
your family room, bedroom, theater room or whole house music
system. Extremely versatile, Boston CR speakers are at home on a
bookshelf, a floor stand, or mounted to the wall. And, for added
placement flexibility, the CRC7 can be mounted horizontally and/or
vertically around a flat panel TV. All CR speakers have rotating logos
and built-in keyhole mounts for extreme placement flexibility.
For precise positioning, use the optional CRB mounting bracket.
Technology
Boston engineers employed Finite Element Analysis (FEA) and 3D
modeling to optimize the geometry of both the cone and the surround.
Boston CR speakers feature Kortec tweeters. Kortec is a material that
offers detailed high-frequency response—often limited to metal
domes—with the smoothness of a woven material, like silk. Ferrofluid
and an extruded aluminum heat sink combine to improve the tweeter’s
power handling and reliability.
Boston engineers employed Finite Element Analysis (FEA) and 3D
modeling to optimize the geometry of both the cone and the surround.
Boston CR speakers feature Kortec tweeters. Kortec is a material that
offers detailed high-frequency response—often limited to metal
domes—with the smoothness of a woven material, like silk. Ferrofluid
and an extruded aluminum heat sink combine to improve the tweeter’s
power handling and reliability.
SPECIFICATIONS
FREQUENCY RESPONSE (±3dB)
RECOMMENDED AMPLIFIER POWER
NOMINAL IMPEDANCE
SENSITIVITY [1watt(2.83v) at 1m]
BASS UNIT
PASSIVE RADIATOR
TWEETER
CROSSOVER FREQUENCY
NET WEIGHT
DIMENSIONS
(HxWxD)
MAGNAGUARD SHIELDING*
CR77 / The largest Boston CR bookshelf
speaker, the CR77 is a two-way, full-range,
magnetically shielded system. Its 6
speaker, the CR77 is a two-way, full-range,
magnetically shielded system. Its 6
1
⁄
2
-inch
woofer delivers deep, tight bass. It also
features a 1-inch Boston Kortec
features a 1-inch Boston Kortec
®
tweeter.
CR67 / Ideal for stereo systems, home
theater surrounds, or as speakers for
whole-house music systems. The CR67
speaker features a
theater surrounds, or as speakers for
whole-house music systems. The CR67
speaker features a
3
⁄
4
-inch Kortec
®
tweeter
and 5
1
⁄
4
-inch woofer.
CR57 / Don’t let its size fool you.
The versatile CR57 fills a room with
rich, vibrant Boston Sound, making it a
great choice as main speakers or as
surrounds for a larger system. It offers
Boston’s
The versatile CR57 fills a room with
rich, vibrant Boston Sound, making it a
great choice as main speakers or as
surrounds for a larger system. It offers
Boston’s
3
⁄
4
-inch Kortec
®
tweeter and a
4
1
⁄
2
-inch woofer.
CRC7 / Unique mounting design enables
L/C/R use around an LCD or flat screen
monitor. The CRC7 features Boston’s
1-inch tweeter, a 4
L/C/R use around an LCD or flat screen
monitor. The CRC7 features Boston’s
1-inch tweeter, a 4
1
⁄
2
-inch woofer, 4
1
⁄
2
-inch
passive radiator, and some very
intelligent engineering.
intelligent engineering.
Kortec
®
soft dome tweeter and
internally-braced cabinet delivers
clean, pure sound
clean, pure sound
MagnaGuard
®
magnetic shielding
for video applications*
Woofer’s coaxial phase plug
draws heat away from the voice
coil, increasing power handling
draws heat away from the voice
coil, increasing power handling
Deep Channel
™
Design pole plate
enables the voice coil to travel
farther without bottoming out
farther without bottoming out
Wide selection of CR sizes and
specifications to fit any
application, and any budget
specifications to fit any
application, and any budget
CRC7
CR77
CR67
CR57
80Hz-20kHz
10-75 watts
8 ohms
89dB
4
1
⁄
2
"(115mm)
N/A
3
⁄
4
"(19mm) Kortec
®
2600Hz
5.3 lbs(2.6 kgs)
9
1
⁄
4
x 5
5
⁄
8
x 6
1
⁄
4
"
235 x 142 x 159mm
no
62Hz-20kHz
15-100 watts
8 ohms
89dB
5
1
⁄
4
"(135mm)
N/A
3
⁄
4
"(19mm) Kortec
®
2600Hz
7.7 lbs(3.5 kgs)
10
1
⁄
8
x 6
3
⁄
8
x 8
11
⁄
16
"
257 x 162 x 220mm
yes
52Hz-20kHz
15-100 watts
8 ohms
89dB
6
1
⁄
2
"(115mm)
N/A
1"(25mm) Kortec
®
2400Hz
13.5 lbs(6.2 kgs)
12
1
⁄
4
x 7
1
⁄
2
x 11
1
⁄
16
"
311 x 191 x 281mm
yes
80Hz-20kHz
15-100 watts
8 ohms
89dB
4
1
⁄
2
"(115mm)
4
1
⁄
2
"(115mm)
1"(25mm) Kortec
®
2400Hz
11 lbs(5.0 kgs)
5
1
⁄
4
x 15
1
⁄
2
x 6
3
⁄
16
"
134 x 394 x 157mm
yes
Key hole mounts and rotating
logos for flexible placement
logos for flexible placement