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“I am a little stunned by the Polk LSi 15… outstanding accuracy, detail and nuance…”
The Absolute Sound,
April/May 2002
LSi 25 | LSi 15 |
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
Scanning electron microscope image of Aerated Poly Cone showing air pockets.