350ls questions

warlocks1
warlocks1 Posts: 1,252
edited June 2004 in Speakers
I picked up a CS350 today and have a couple questions. Why do the drivers have the strange raised lines, ridges(?) on the dust caps. I have never seen this on a Polk driver. This speakers had gold binding post. I assume this was an aftermarket upgrade? I will take pictures later. I think I am getting as bad as Russ. I gotta slow down! Thanks, Jeff
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