Polk Audio Lsi Series - Manual (Page 3)

AERATED POLYPROPYLENE CONE
Polk Audio LSi Series Loudspeakers feature ultra stiff, well damped, surprisingly lightweight
Aerated Polypropylene Cones. They’re 20% lighter than conventional poly and 35% lighter than
aluminum cones. Dynamic Balance composite materials tune out driver resonance and foamed
air pockets add damping without adding mass. These cones deliver spectacular midrange
clarity, punchy bass and high efficiency. See more about Aerated Polypropylene Cones at
www.polkaudio.com/catalog/technology/. polk
technology
WWW.POLKAUDIO.COM 3
Scanning electron microscope
image of Aerated Poly Cone
showing air pockets.
LSi 15 LSi 25
“I am a little stunned by the Polk LSi15…
outstanding accuracy, detail and nuance…”
The Absolute Sound,
April/May 2002