I am looking for 5 pcs of psb center channels. I have one century200ci, and want to try all 5 speakers the same, but these are old stock. The new ones are all metal tweeters, and I like the soft domes of the old ones. As well, the 6 1/4 drivers are very efficient, and run about 6 ohms which suits my h/k just fine. Called the factory, e-bay, yadda yadda. Any ideas for dealers/sources?