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Features
High Efficiency Design: The Polk Audio DXi Series speakers
feature a high efficiency design so less amplifier power is needed for more audio
output, meaning better sound and more volume using less power.
Dynamic Balance Driver Technology: Dynamic Balance is a
proprietary Polk Audio technology using laser imaging to determine what
combination of speaker materials create the least amount of resonance.
Eliminating resonance in speakers results in a wide, smooth response and
low distortion.
Klippel Optimized Components: For a driver to reproduce
complex sounds accurately, the cone must move in exactly the same distance and
manner in both directions of travel. The Klippel distortion analyzer, a device
that uses a laser and sophisticated software to do large-scale analysis of
drivers in motion, lets Polk optimize the speaker's motor structure, voice coil
alignment, and suspension to yield the best possible performance.
Composite Cones: Each Polk DXi650s speaker features a Dynamic
Balance, polymer/mica composite cone woofer. These composite cones feature tremendous
stiffness-to mass ratio. Lower mass means faster transients and finer detail.
Butyl Rubber Surrounds: For a smoother response and improved
durability, the speaker uses butyl rubber surrounds.
Silk Dome Tweeters: Each Polk DXi650s speaker features a
3/4" silk dome tweeter for clearer, more accurate highs. Each tweeter employs
a light-weight neodymium magnet for higher efficiency.
2-way Crossover Network: The built-in 2-way crossover network
sends the appropriate frequencies to each driver for cleaner sound and better
imaging.
Marine Certified: Every DXi Series loudspeaker is designed
not only to withstand the demands of a car's sun-baked climate, but corrosive
marine environments, too. That meant subjecting every DXi speaker to ASTM
(American Society for Testing and materials) scrutiny to ensure they were
suitable for the marine environment. The DXi speakers were subjected to a
series of grueling accelerated weathering tests to see if they could stand
up to a harsh marine environment. Polk subjected the DXi Series speakers to
hundreds of hours of salt fog, intense ultra violet light and temperatures
ranging from minus 40° C (-40° F) to +85° C (+185° F), and the speakers passed
them all.
- Extreme Temp Test: cycles from -40°F to 185°F
at 50% humidity for 48 hours
- Extreme Temp Test at High Humidity: cycles from
-40°F to 185°F at 95% humidity for 24 hours
- Extreme Humidity Test: 140°F at 95% humidity
for 54 hours
- Salt-Fog Materials Test: based on military
specifications for ASTM D5894 and Mil-Std 883 tests; alternates
one week of UV and one week of salt fog exposure, for six weeks
(1008 hours total)
- UV/Salt-Fog Whole Speaker Test: based on military
standard Mil-Std 883 Method 1009 8 test; UV and salt fog exposure for
24 hours
