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The Boston Acoustics ProSeries 6.5LF Woofer is a powerful 61/2-inch driver specifically designed to handle low- frequency and mid-bass signals down to the subwoofer crossover point. The circuit described here allows the 6.5LF to added on to existing full-range speaker systems to augment output below 300Hz.

This crossover is easily built using very few components. It is very useful in systems with limited mid-bass output in the front stage, or systems where the mid-bass output is coming from the rear of the car and additional mid- bass output is desired in the front of the vehicle. As you can see from the frequency output curve on the right, there is no low-frequency cutoff in this crossover. Instead, it is preferable to use a two-way electronic crossover between the 6.5LF woofers and the subwoofer in the system. In applications where no subwoofer is present, this crossover also allows the 6.5LF to be the primary deep-bass driver in the system.

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Woofer Installation

When installing the 6.5LF Woofer, it is important to ensure a complete seal between the front and back of the woofer. A very small air leak anywhere near the woofer can dramatically reduce low frequency output and nega- tively affect the frequency response of the driver. Additionally, it is very important to securely mount the woofer on a rigid baffle. Any energy that moves or vibrates the baffle is energy that is not accurately reproducing sound. The woofer cone should be nearly coplanar with the baffle board. Spacing the woofer off from the baffle or recessing the woofer too far into a cavity can introduce anomalies in the frequency response of the driver.

The 6.5LF Woofer is designed for infinite baffle applications. In most installations it will be mounted in the door of the vehicle without a separate enclosure. If it is necessary to build an enclosure to house the woofer, the enclosure should be relatively large. For a 61/2-inch woofer, a 1/4-cubic foot or larger enclosure is sufficient. When construct- ing an enclosure, be sure that the airspace inside is completely sealed from the outside air.

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Boston Acoustics 6.5LF manual Infor, Woofer Installation
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6.5LF specifications

Boston Acoustics has built a strong reputation in the audio industry, particularly for delivering high-quality speakers that enhance the listening experience. One of their standout offerings is the 6.5LF, a 6.5-inch low-frequency driver designed for various audio applications, including home theaters, music systems, and professional audio setups. The Boston Acoustics 6.5LF is engineered to deliver powerful bass response and articulate sound, making it a popular choice among audiophiles and casual listeners alike.

The main features of the 6.5LF include its robust construction, high sensitivity, and advanced cone materials. The driver is designed to produce deep, rich low frequencies without sacrificing clarity or detail. With a sensitivity rating that allows it to deliver impactful sound even with lower wattage, the 6.5LF is adaptable to various amplifiers and setups, making it a versatile option for users who seek both performance and efficiency.

One of the standout technologies employed in the Boston Acoustics 6.5LF is the advanced cone geometry. The unique design allows for better diaphragm control, which minimizes distortion and enhances the overall sound quality. This feature ensures that listeners enjoy a more accurate representation of their favorite music tracks or movies, with bass notes that remain tight and punchy.

The surround technology used in the 6.5LF is also noteworthy. Boston Acoustics incorporates high-quality materials that promote a linear suspension and smooth motion of the cone. This design reduces unwanted resonances and increases the driver's overall lifespan. The result is an extended bass response that can seamlessly integrate with other audio components.

In terms of installation, the 6.5LF offers flexibility. It can be used in various enclosures, whether sealed or ported, allowing users to tailor their audio setup based on their preferences and room acoustics. This adaptability makes the 6.5LF an excellent choice for DIY audiophiles looking to create their custom speaker systems.

Overall, the Boston Acoustics 6.5LF stands out in its category due to its combination of innovative design, superior materials, and impressive sound quality. Whether used in a professional setting or a home audio system, this low-frequency driver continues to provide an exceptional listening experience that meets the demands of today's audio enthusiasts. Its reliable performance and user-friendly characteristics make it a solid investment for anyone seeking to elevate their sound experience.
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