Boston Acoustics

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VS 224LCR loudspeakers -- slim enough to be wall-mounted surrounding a flat-panel TV monitor -- are engineered to bring any multichannel source material vividly to life. Dual 4-1/2" (114mm) OCCM woofers. 1" (25mm) SWB tweeter . Elegant black lacquer piano finish cabinet

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Owners are rightly dazzled by the picture quality of today’s flat-panel TVs, but few have kind words for the sound of the built-in speakers. VS 224 LCR loudspeakers -- slim enough to be wall-mounted surrounding a flat-panel TV monitor -- are engineered to bring any multichannel source material vividly to life. Dual high-performance OCCM woofers and an SWB tweeter, integrated with premium crossover components, deliver audio performance that’s a perfect complement to the video performance of your flat-panel monitor, and their high-gloss, high-style design will add an elegant note to any decor.
  • Dual 4-1/2" (114mm) OCCM woofers
  • 1" (25mm) SWB tweeter
  • Elegant black lacquer piano finish cabinet
  • High-gloss furniture-grade end panels in a choice of finishes
  • MagnaGuard video shielding
  • Gold-plated 5-way binding posts

Boston's Super Wide Bandwidth (SWB) High -Frequency Transducer Tweeter

This extraordinary new tweeter incorporates an array of features and technologies that result in great transparency and micro dynamics with a low frequency extension that ensures a full-bodied sound character at high output levels.

The SWB's Coupled Dual Concentric Diaphragm (CDCD)
The advantage of using the new Boston Acoustics CDCD diaphragm is that its center is terminated to a brass plug that extends from the motor system. At high frequencies (i.e. above 10-12 kHz) the center of a traditional dome shaped diaphragm is gradually decoupled and begins to move out of phase with the remaining diaphragm structure causing cancellation of higher frequencies and a loss of radiating surface area. Terminating the center portion prevents this from happening and forces the diaphragm to operate in a “bending wave” mode, which has significantly lower distortion and no phase cancellations. In this way, the CDCD works more like a piston—and this lowers the ”noise floor”. The larger surround ensures sufficient high frequency radiation and improves dispersion. It also compensates for the loss of center diaphragm area and lowers compliance. The layering of materials is used to make a composite sandwich.

Organic Composite Cone Material (OCCM)
When selecting a high performance loudspeaker cone material for VS Series, the engineering team at Boston Acoustics required the material’s performance qualities to meet our highest standards. In order to acheive maximum performance, the VS Series loudspeaker cone material needed to exhibit 3 principal qualities:

Lightweight - To achieve faster speed allowing for greater attack transient response while maintaining good sensitivity

Rigid - To remain pistonic and minimize cone break-up even during higher output

Highly-damped - To minimize resonances and provide un-colored accurate motion throughout it’s specified band

The Organic Composite Cone Material or OCCM chosen for VS is a new lightweight, strong, and well-damped cone material developed to have superior sound characteristics. Through the use of select natural fibers making the material less uniform, it virtually eliminates the inherent cone break up modes exhibited by many other common cone materials, and provides VS with a cone platform for inherently accurate motion and sound.

While OCCM cones are very light they are also very rigid because the random crossing natural fibers strengthen the paper base material much like carbon fiber, but at a lower weight. By using OCCM along with premium transducer components, such as aluminum cast baskets and rubber surrounds, VS Series loudspeakers are able to achieve increased output, improved accuracy, and a high level of reliabilty.

Cabinet Construction
The speaker enclosure plays a vital role in the sound reproduction chain. It provides a foundation for the woofers to generate of high-level bass while remaining neutral in acoustic color and adding none of its own character. The enclosure should not flex or resonate and it should not allow standing wave buildup which could influence the behavior of the speaker units. The enclosure should also be strong and stable, offering rock solid anchoring for the higher frequency drivers so an accurate acoustic image can result.

Most cabinets are made of man-made wood, which is inexpensive, relatively strong, well damped, and easily machined and finished. It’s well known in the aviation industry, that composite materials can benefit from their constituent components in a way that exceeds the performance of each of them separately. Typically, composite materials exhibit a much higher strength than any of the component materials, and they can benefit from enhanced damping characteristics as the layers work against each other. For this reason, we chose to make our VS Series loudspeaker cabinets from several layers of dissimilar wood materials, sandwiched together in a high pressure curved set of tools and cured with high frequency RF energy. The result is a stable curved composite wood board material that can be further machined and assembled into a loudspeaker enclosure.


Recommended Amplifier
10 – 200 Watts
87 dB SPL/2.8V/m
Nominal Impedance
8 ohms
Crossover Frequency
1,900 Hz
High-Frequency Driver
25mm) Super Wide Bandwidth
10 lbs (8.2Kg)
Frequency Range (+-3dB)
78Hz – 30kHz
Bass Driver
Dual 41/2" (114mm)
Midrange Driver
Dimensions ((H x W x D))
25" x 5 3/4 x 3 3/4" (632 x 148 x 96 mm)

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