philly0116 Posted July 2, 2013 Share Posted July 2, 2013 If a K-55 driver ohms out right and still works is there any reason to change it? Do they get 'exhausted'? I just ordered a pair of woofers, crossovers, and tweeters from Crites but left the k55 driver alone. Should I change it? Quote Link to comment Share on other sites More sharing options...
Coytee Posted July 2, 2013 Share Posted July 2, 2013 The K55's in my LaScalas are (apparently) still going strong. The speakers were bought new by me in 1979 so they're over 30 years old. It wouldn't surprise me that the diaphragms on them might be getting brittle (?) but there's no obvious sign of that sonically at the levels I listen to them. Quote Link to comment Share on other sites More sharing options...
Budman Posted July 2, 2013 Share Posted July 2, 2013 you better hurry http://www.ebay.com/itm/2-Klipsch-K-55V-Midrange-Drivers-FROM-La-Scala-WITH-FREE-SHIPPING-/290932577968?pt=Vintage_Electronics_R2&hash=item43bceed6b0#ht_21wt_1275 Quote Link to comment Share on other sites More sharing options...
Mighty Favog Posted July 5, 2013 Share Posted July 5, 2013 you better hurry http://www.ebay.com/itm/2-Klipsch-K-55V-Midrange-Drivers-FROM-La-Scala-WITH-FREE-SHIPPING-/290932577968?pt=Vintage_Electronics_R2&hash=item43bceed6b0#ht_21wt_1275 YEA!! I paid $110 each for mine (Atlas PD5VH) from Northern Lites. Quote Link to comment Share on other sites More sharing options...
djk Posted July 5, 2013 Share Posted July 5, 2013 BEC sells the replacement diaphragms for the Atlas K55V for $60 each. Quote Link to comment Share on other sites More sharing options...
bigrfish Posted July 12, 2013 Share Posted July 12, 2013 BEC sells the replacement diaphragms for the Atlas K55V for $60 each. And the Selenium phenolic-dome driver is just a little less than the Atlas diaphragm, and the replacement diaphragms for them are around $10.00 each. Sound is similar. Quote Link to comment Share on other sites More sharing options...
djk Posted July 12, 2013 Share Posted July 12, 2013 Selenium has about 10dB less output in the 5Khz region. Quote Link to comment Share on other sites More sharing options...
Deang Posted July 12, 2013 Share Posted July 12, 2013 You're always making a big deal about stuff. Quote Link to comment Share on other sites More sharing options...
babadono Posted July 16, 2013 Share Posted July 16, 2013 [Y] Yeah kinda important stuff Quote Link to comment Share on other sites More sharing options...
moray james Posted July 16, 2013 Share Posted July 16, 2013 Thanks djk for always being on duty. Best regards Moray James. Quote Link to comment Share on other sites More sharing options...
babadono Posted July 17, 2013 Share Posted July 17, 2013 Selenium has about 10dB less output in the 5Khz region. djk, How is one to interpet these graphs? The Atlas driver vertical scale is at 1W or 1mW? The Selenium driver has two vertical scales. It looks like the Selenium driver puts out 126db at 5kHz with 1W. And >146db in the 700-800Hz region, is that possible? 146db? OMG! babadono Quote Link to comment Share on other sites More sharing options...
djk Posted July 18, 2013 Share Posted July 18, 2013 A plane wave tube will generally be about 145dB/W mid-band, that will be about 115dB/1mW. Tha Atlas has its highest output centered around 400hz, the Selenium around an octave higher. The Atlas is useable about an octave lower. The Selenium is an OK driver (I have four of them mounted up on a quad MCM type manifold), if your tweeter can be crossed at 3.2Khz~3.5Khz or so. Quote Link to comment Share on other sites More sharing options...
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