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AERATED POLYPROPYLENE CONE
Polk Audio LS iSeries Loudspeakersfeature ultrastiff, welldamped, surprisinglylightweight
Aerated Polypropylene Cones.They’re 20%lighter thanconventional polyand 35%lighter than
aluminum cones. DynamicBalance compositematerials tuneout driverresonance andfoamed
air pockets adddamping withoutadding mass.These conesdeliver spectacularmidrange
clarity ,punchy bassand highefficiency. See more aboutAerated PolypropyleneCones at
www .polkaudio.com/catalog/technology/.
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technology
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Scanningelectron microscope
imageof Aerated PolyCone
showingair pockets.
LSi15
LSi25
“I am a little stunned by the Polk LSi15…
outstanding accuracy, detail and nuance…”
The Absolute Sound,
April/May 2002