CR55
CR65
CR75
CR85
Boston Compact Speakers
Specifications |
CR55 |
CR65 |
Frequency Response (±3dB) |
80–20,000Hz |
65–20,000Hz |
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Recommended Amplifier Power |
10–85 watts |
15–100 watts |
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Nominal Impedance |
8 ohms |
8 ohms |
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Sensitivity [1 watt (2.83v) at 1m] |
88dB |
88dB |
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Bass Unit |
4 1⁄2" (115mm) copolymer |
5 1⁄4" (135mm) copolymer |
Tweeter |
3⁄4" (20mm) dome |
3⁄4" (20mm) dome |
Crossover Frequency |
4200Hz |
4200Hz |
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Dimensions (HxWxD) |
91⁄4 x 53⁄8 x 6" (235 x 143 x 152mm) |
101⁄8 x 63⁄8 x 77⁄8" (257 x 162 x 200mm) |
Weight |
53⁄4 lbs (2.6kg) |
9 lbs (4kg) |
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CR75 |
CR85 |
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Frequency Response (±3dB) |
52–20,000Hz |
48–20,000Hz |
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Recommended Amplifier Power |
15–100 watts |
15–125 watts |
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Nominal Impedance |
8 ohms |
8 ohms |
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Sensitivity [1 watt (2.83v) at 1m] |
89dB |
90dB |
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Bass Unit |
61⁄2" (165mm) copolymer |
7" (180mm) DCD™ copolymer |
Tweeter |
1" (25mm) Kortec™ |
1" (25mm) Kortec™ |
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Crossover Frequency |
2500Hz |
2500Hz |
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Dimensions (HxWxD) |
121⁄2 x 71⁄2 x 91⁄2" (318 x 191 x 241mm) |
15 x 81⁄2 x 111⁄2" (381 x 216 x 292mm) |
Weight |
12 lbs (5.4kg) |
163⁄4 lbs (7.6kg) |
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Description
Continuing in the tradition of our critically acclaimed Compact Reference series, the second generation CR55, CR65, CR75 and CR85 are compact, versatile, high performance bookshelf speakers designed to deliver accurate, natural reproduction.
Special care has been taken to optimize the speakers’ components for maximum performance: The bass units utilize phase plugs that conduct 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 in the CR75 and CR85 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. The CR65, CR75 and CR85 feature MagnaGuard® magnetic shielding for safe placement near any sized television set.
The drivers are positioned very closely to each other for smooth, uniform radiation in both the horizontal and vertical planes. 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 rear-mounted vent is smoothly flared to reduce port turbulence, and all speakers feature five-way binding posts, allowing wiring with virtually any cable.
Mounting options include placement on stands and shelves via the included rubber feet, flat attachment to walls with the built-in keyhole bracket and angled, offset mounting to walls via the optional CRB bracket. The logo plate can be easily rotated in 90° increments to maintain the speaker’s appearance when placing it on its side.
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