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 SolutionTM 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 412-inch woofer, 412-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 612-inch woofer delivers deep, tight bass. It also features a 1-inch Boston Kortec® tweeter. 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 MagnaGuard® magnetic shielding for video applications* Deep ChannelTM Design pole plate enables the voice coil to travel farther without bottoming out Key hole mounts and rotating logos for flexible placement CR67 / Ideal for stereo systems, home theater surrounds, or as speakers for whole-house music systems. The CR67 / speaker features a 34-inch Kortec® tweeter / and 514-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 34-inch Kortec® tweeter and a / / 412-inch woofer. Woofer's coaxial phase plug draws heat away from the voice coil, increasing power handling Wide selection of CR sizes and specifications to fit any application, and any budget 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* CRC7 80Hz-20kHz 15-100 watts 8 ohms 89dB 412"(115mm) / 412"(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 CR77 52Hz-20kHz 15-100 watts 8 ohms 89dB 61/2"(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 CR67 62Hz-20kHz 15-100 watts 8 ohms 89dB 51/4"(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 CR57 80Hz-20kHz 10-75 watts 8 ohms 89dB 41/2"(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 ©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. Boston Acoustics, Inc., 300 Jubilee Drive, Peabody, MA 01960 USA ...