BEC Posted July 30, 2006 Share Posted July 30, 2006 You should rip the old K-33s out of your old heritage speakers and replace them with new ones. Then eBay the old woofs. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220010229000 Bob Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 31, 2006 Share Posted July 31, 2006 what on earth is a 'matched pair' of woofers? Bet this one comes around again when that guy figures how much he overpaid. Think of the shipping! Michael Quote Link to comment Share on other sites More sharing options...
BEC Posted July 31, 2006 Author Share Posted July 31, 2006 Actually I think the guy that bought the woofers is trying to buy a pair of Lascalas the hard way. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220010291122 Bob Quote Link to comment Share on other sites More sharing options...
Arky Posted July 31, 2006 Share Posted July 31, 2006 I thought you guys were talking about me.[] Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 31, 2006 Share Posted July 31, 2006 so is the seller a butcher? Quote Link to comment Share on other sites More sharing options...
djk Posted July 31, 2006 Share Posted July 31, 2006 "what on earth is a 'matched pair' of woofers? " In this context I would think having the same date codes. Magnets and dustcaps changed quite a bit in the later 70s and early 80s, yet all are marked K33E. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 31, 2006 Share Posted July 31, 2006 Do we really care? Or does the magnet construction change the sound that much? If at all? Quote Link to comment Share on other sites More sharing options...
BEC Posted July 31, 2006 Author Share Posted July 31, 2006 Biggest change that I know of is the change from square magnet to round magnet in 1985. Along with this change and perhaps having nothing to do with the magnet shape, the FS changed from 26 hz to 34 hz. Bob Crites Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 31, 2006 Share Posted July 31, 2006 that sounds like a pretty considerable difference Bob. So it would not be adviseable to mix magnet structures with a pair of speakers? I wonder how the same cabinet and tuning for say Cornwalls responds to the change in Fs- DOC! Michael Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted July 31, 2006 Share Posted July 31, 2006 Wow, that was the seller's lucky day. I wonder if the buyer will actually come through on that auction. Nothing like paying $100 more for used when he could save that much and get the same thing brand new from Klipsch parts. Those aren't even the old coveted square magnet K33's. Quote Link to comment Share on other sites More sharing options...
Corvette6769 Posted July 31, 2006 Share Posted July 31, 2006 Biggest change that I know of is the change from square magnet to round magnet in 1985. Along with this change and perhaps having nothing to do with the magnet shape, the FS changed from 26 hz to 34 hz. Bob Crites Okay, I give up...I assume that 26 hz to 34 hz is the low end of the frequency range, but what does "FS" stand for? Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 31, 2006 Share Posted July 31, 2006 Fs is the free air resonance of the cone. If you ran a test on the speaker outside of a cabinet, I think it could be described at the most efficient frequency of the woofer, usually a huge peak just before the curve dive bombs. It's one of the most important specs of a woofer to the cabinet designer, because the cabinet attempts to tame this peaky frequency. (kindly correct if this is slightly off) M Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 31, 2006 Share Posted July 31, 2006 Ok, here it is from the Theil-Small papers Free-air resonance, Fs, is the resonant frequency of the driver's voice coil impedance with the driver suspended in free air (no enclosure). The -3 dB frequency (F3) of an enclosure is proportional to Fs. Quote Link to comment Share on other sites More sharing options...
BEC Posted July 31, 2006 Author Share Posted July 31, 2006 That is resonant frequency in free air. Bob Crites Quote Link to comment Share on other sites More sharing options...
kaiser SET say Posted July 31, 2006 Share Posted July 31, 2006 Say the boys gonna get heemself a par them thar side slappin' LaScalla's[] Brace yourself boys or at least your LaScalla's[] Quote Link to comment Share on other sites More sharing options...
DizRotus Posted July 31, 2006 Share Posted July 31, 2006 $356 for a pair of used woofers is approximately $100 more than I paid Bob for a pair of new K33s. If only I'd spent the extra hundred for a "matched" set of used drivers :-). Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted July 31, 2006 Share Posted July 31, 2006 That is resonant frequency in free air. Bob Crites Makes me glad I live in Arkansas, where the air is free. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted July 31, 2006 Share Posted July 31, 2006 " . . . Arkansas, where the air is free." But I heard that it smells like chicken. Quote Link to comment Share on other sites More sharing options...
Jay481985 Posted July 31, 2006 Share Posted July 31, 2006 Fs is the free air resonance of the cone. If you ran a test on the speaker outside of a cabinet, I think it could be described at the most efficient frequency of the woofer, usually a huge peak just before the curve dive bombs. It's one of the most important specs of a woofer to the cabinet designer, because the cabinet attempts to tame this peaky frequency. (kindly correct if this is slightly off) M Well you try and make the fs out of the range of the caninet. The lower the fs does not mean the lower the speaker but it might enable the speaker not to resonate within it's frequency range. Its more important usually on the midrange/midwoofer, as those frequencies then to be the range where cabinet resonance can happen. Quote Link to comment Share on other sites More sharing options...
johnyholiday Posted July 31, 2006 Share Posted July 31, 2006 ~$CERTIFIED EBAYMANIA PANDEMIC$~ Quote Link to comment Share on other sites More sharing options...
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