Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere.
That's because we have our own in-house Product Research team — they open the box,
verify contents, check the owner's manual, and record dimensions, features and specs.
We stay on top of new products and technologies to help people make informed choices.
Features
High Efficiency Design: The Polk Audio DXi Series speakers
feature a high efficiency design; 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 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 exactly the same distance and
manner in both directions. 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 DXi 690 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.
Rubber Surrounds: For a smoother response and improved
durability, the speaker uses rubber surrounds.
Silk Dome Tweeters: The DXi 690s feature a 1" silk/polymer
dome tweeter and a 3/4" silk/polymer dome super tweeter for clear, accurate
highs. The tweeters employ a light-weight neodymium magnet for higher efficiency.
