The Speaker for All Seasons
The flagship of the line, the Atrium®8SDI has a unique, patented*
single/dual input switch that combined with its ingenious dual tweeter
array enables you to use the Atrium8SDI as either a single high
performance stereo loudspeaker, or the left-or-right speaker in a high
performance stereo pair. And you can use it practically anywhere,
because the Atrium8SDI also has special military spec waterproofing
features, including our patented water-resistant PowerPort® bass
6 1/2-inch (16.51cm) long-throw aerated polypropylene cone driver
with butyl rubber surround pumps out surprising bass response from a
Two 1-inch (24.5mm) anodized aluminum dome tweeters with rubber
surrounds and neodymium magnets offer better power handling, smoother
response and greater accuracy. Dual tweeter array with stereo tweeter
aiming creates excellent imaging, whether used as a single stereo
speaker, or as half of a stereo pair.
Patented water-resistant PowerPort bass venting efficiently
adds 3dB of big, realistic, musical bass output. And because it's Polk
all-weather certified water-resistant, it can go practically anywhere
with no worries about moisture impeding its performance.
Dual voice coil, Dynamic Balance® aerated polypropylene cone
with rubber surround for greater power handling and better efficiency.
Single/dual input switch*. Combined with its ingenious dual
tweeter array, this switch enables the Atrium8SDI to be used either as a
single high-performance stereo loudspeaker, or the left-or-right
speaker in a high performance stereo pair.
Broad coverage made possible by a more steeply-angled baffle
design that maximizes critical mid- and high-frequency dispersion over a
large area, without sacrificing the detail.
Durable, mineral-filled polypropylene cabinet design, with
molded-in bracing, sounds like a real speaker (not "an outdoor
speaker"), and survives years of seasonal changes, for truly great
sound, no matter what the weather.
Patented Dynamic Balance and Klippel optimization technologies
ensure the perfect material performance, eliminating driver and tweeter
"artifacts" for more realistic sound reproduction at high and low volume
Polk all-weather certified, Atrium Series speakers exceed
baseline industrial and military specifications for environmental
endurance (ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, Mil-Std
883 Method 1009.8 for salt and corrosion.) Certification means Atrium
speakers can effortlessly withstand the worst Mother Nature can dish
out, whether its extreme temps or heavy rains. Aluminum grilles and
bracket, with stainless steel and brass hardware: No rust. Ever.
Gold plated 5-way binding posts for the most secure, efficient hookups.
Available in durable, weatherproof black or white paintable finishes.