Boston acoustics CR67, CR57, CR77, CRC7 User Manual

Boston CR Bookshelf Speakers

Value. Style. Versatility.

Boston CR speakers contain some of the most precious engineering secrets developed for our flagship Boston Reference systems. Plus,multiple sizes,finishes and mounting options make choosing the right CR speaker simple. So, even though they are our most affordable bookshelves—they offer an incredible value,performance, and placement flexibility.

Your Sound Solution

™

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

⁄2-inch woofer, 41⁄2-inch passive radiator, and some very intelligent engineering.

CR77 / The largest Boston CR bookshelf speaker, the CR77 is a two-way,full-range, magnetically shielded system. Its 6 woofer delivers deep,tight bass. It also features a 1-inch Boston Kortec

⁄2-inch

tweeter.

CR67 / Ideal for stereo systems, home theater surrounds, or as speakers for whole-house music systems. The CR67 speaker features a

⁄4-inch woofer.

and 5

⁄4-inch Kortec®tweeter

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

⁄4-inch K

⁄2-inch woofer.

ortec

tweeter and a

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.

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.

Kortec®soft dome tweeter and internally-braced cabinet delivers clean, pure sound

gnaGuar

or video applications*

Woofer’s coaxial phase plug draws heat away from the voice coil, increasing power handling

gnetic shielding

Deep Channel™Design pole plate enables the voice coil to travel farther without bottoming out

Key hole mounts and rotating logos for flexible placement

ide selection of CR sizes and

ications to f

specif application,

and an

it an

y budget

SPECIFICATIONS

±3dB)

FREQUENCY RESPONSE

(

RECOMMENDED AMPLIFIER POWER NOMINAL IMPEDANCE SENSITIVITY [1w

att(2.83v) at 1m] BASS UNIT PASSIVE RADIATOR TWEETER CROSSOVER FREQUENCY NET WEIGHT

DIMENSIONS (HxWxD)

ARD SHIELDING*

e trademarks of Boston Acoustics, Inc. All other trademarks are the property of their respective holders. Specifications are subject to change without notice.

CRC7 CR77 CR67 CR57

80Hz-20kHz 15-100 watts 8 ohms 89dB

⁄2"(115mm)

1"(25mm) Kortec

2400Hz 11 lbs(5.0 kgs)

⁄4 x151⁄2 x 63⁄16" 134 x 394 x 157mm yes

52Hz-20kHz 15-100 watts 8 ohms 89dB

⁄2"(115mm) N/A 1"(25mm) Kortec 2400Hz

13.5 lbs(6.2 kgs)

⁄4 x71⁄2 x 111⁄16"

311 x 191 x

281mm

yes

62Hz-20kHz 15-100 watts 8 ohms 89dB

⁄4"(135mm)

N/A

⁄4"(19mm) Kortec

2600Hz

7.7 lbs(3.5 kgs)

⁄8 x63⁄8 x 811⁄16" 257 x 162 x 220mm yes

Boston Acoustics, Inc., 300 Jubilee Drive, Peabody,MA 01960 USA

80Hz-20kHz 10-75 watts 8 ohms 89dB

⁄2"(115mm)

N/A

⁄4"(19mm) Kortec

2600Hz

5.3 lbs(2.6 kgs)

⁄4 x55⁄8 x 61⁄4" 235 x 142 x 159mm no

Boston acoustics CR67, CR57, CR77, CRC7 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual