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Specialty Ci Speakers

Outdoor speaker systems must be built to withstand the elements, without compromising on audio fidelity. Our Ventura series and specialty in-ceiling speakers perform both tasks exceptionally well, so you can enjoy premium sound while relaxing on your backyard patio. These outdoor designs are weather-tested for water and salt spray, so a theater-grade system can be installed on your private yacht or near the pool. Fresh air, sunshine, and hi-fi sound are all within reach.

First, KEF’s Ventura series can handle any weather imaginable, including extreme humidity, rain, beach storms, and freezing temperatures. Tested for over 1200 hours of salt spray exposure, the compact speaker housing is weatherproof-sealed. With an operable temperature range of -40 to +158ºF (-40 to +70ºC), the Ventura 4, 5, and 6 are IP65 Certified and built to endure, even in the most extreme situations.


At the smaller end of the spectrum, the Ventura 4 includes a 4.5” LF driver and a 19mm aluminum tweeter, with an aluminum grille and mounting bracket for outdoor placement. Next, the Ventura 5 contains a 5.25” LF driver and a 25mm tweeter for increased power. Finally, the Ventura 6 provides additional punch with its 6.5” LF driver, while retaining the same fluid-cooled aluminum tweeter as the Ventura 5. Offered in pairs, each of the Ventura series is available in both black and white finishes.

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