Specifications

251

261

Frequency Response (±3dB)

66–20,000Hz

58–20,000Hz

 

 

 

Recommended Amplifier Power

10–100 watts

10–100 watts

 

 

 

Nominal Impedance

8 ohms

8 ohms

 

 

 

Sensitivity [1 watt (2.83v) at 1m]

89dB

90dB

 

 

 

Tweeter

34" (19mm) dome

34" (19mm) dome

 

 

 

Bass Unit

514" (135mm) copolymer

612" (165mm) copolymer

 

 

 

Crossover Frequency

6500Hz

6200Hz

 

 

 

External Dimensions (HxW)

912 x 634" (241 x 171mm)

10916 x 734" (268 x 197mm)

 

 

 

Mounting Hole Cutout (HxW)

834 x 534" (223 x 146mm)

978 x 718" (251 x 181mm)

 

 

 

Mounting Depth (from surface)

258" (67mm)

278" (73mm)

 

 

 

Description

Boston Designer Series speaker systems are designed to be as accurate, clean, and musical as our free-standing speakers. The unobtrusive, flush-mount design makes them ideal for installation

in walls or ceilings of rooms where space or decor make conventional speakers undesirable or inappropriate. They can also be used for the front and/or rear channels in a home theater system.

The front surface is provided with a matte white finish. The speaker can be installed as is or can be painted to match the room environment, using the supplied painting mask. The speaker grille is removable, and is made of epoxy-painted galvanized steel.

Their smooth, detailed sound comes from two highly refined driver elements: a copolymer bass unit with butyl rubber surround for powerful bass and natural midrange, and a 34-inch dome tweeter that provides outstanding clarity and articulation. The tweeter and bass unit are mounted close together in a point-source configuration for excellent imaging and extremely broad, uniform dispersion. This is important, because wide dispersion gives you the flexibility to install the speakers where they look the best (high on the walls, for example), yet still project clear sound throughout the listening area.

Both drivers are built in Boston’s state-of-the-art production facility to be within ±1dB of the labora- tory reference, perhaps the industry’s tightest tolerance.

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Boston Acoustics 251, 261 manual Specifications, Description

261, 251 specifications

Boston Acoustics has long been synonymous with quality audio systems, and their 251 and 261 speakers exemplify this commitment to excellence. These models are designed to deliver exceptional sound in a variety of settings, making them a popular choice for audio enthusiasts.

The Boston Acoustics 251 speakers are engineered for outdoor use, featuring a rugged, weather-resistant construction that allows them to withstand the elements. Their sleek design, available in a variety of colors, ensures that they can blend seamlessly into any environment, whether it be a patio, garden, or pool area. With a power handling capability of 200 watts per speaker, the 251s are capable of producing a powerful sound that can fill a large outdoor space.

A standout feature of the 251 is its patented Acoustic Lens Technology. This innovative design enables the speaker to create a wide sound dispersion, providing an immersive audio experience. The 5.25-inch polypropylene cone woofer delivers tight and punchy bass, while the 1-inch soft dome tweeter ensures clear highs and a balanced sound profile. This combination results in a rich audio experience that will elevate any outdoor gathering.

On the other hand, the Boston Acoustics 261 speakers are more suited for indoor use, delivering high-quality audio performance in a compact and stylish package. These speakers are designed with a minimalist aesthetic, making them a versatile choice for various room styles. The 261 features two 6.5-inch woofers and a 1-inch tweeter, delivering an expansive frequency response that caters to a broad range of musical genres.

Both models incorporate advanced technology to ensure optimal audio performance. The speakers utilize a proprietary bass reflex design, allowing for enhanced low-frequency response without distortion. The innovative design minimizes cabinet vibrations, resulting in cleaner sound reproduction. Additionally, the speakers include mounting options that make installation straightforward, whether on walls or stands.

The Boston Acoustics 251 and 261 are built for durability and performance, proving that quality sound can be achieved in both indoor and outdoor environments. Their blend of innovative technology, robust construction, and elegant design makes them a reliable choice for audio enthusiasts seeking to enhance their listening experience. Whether you are enjoying music by the pool or hosting a gathering indoors, these speakers deliver the high-fidelity sound that Boston Acoustics is renowned for.