Billzumwalt Posted July 11, 2016 Share Posted July 11, 2016 (edited) I just installed a set of ALK AP12-600 and ES5800 crossovers into my Klipsch Cornwall's. I am using a Conrad Johnson PV12 and Premier 11a. The original crossovers were the Klipsch B3 type. These were not bad at all, at the lowest levels I usually listen too. But, I frequently listen at higher levels so I thought I'd try the ALK's. They are a very nice improvement indeed. I did set the tweeter level to -5 on the attenuator, it was set at -3 from ALK. I left the mid range set to -6 db . The bass seems to be firmer and a bit more defined. There seems to be a bit more snap to blues and jazz drumsets on the recordings I just listened too. The mid range has a bit more clarity and a bit less blare, I have the original Klipsch metal horn and ceramic driver, which I believe to be a klipsch made driver just after the Heppner series. The Tweeter is also a ceramic K77m metal horn. I actually find the tweeter to sound just fine, but my hearing is a bit compromised after all these years. I did a test with a signal generator and I can still hear to 17K. I do notice an improved sound stage as well. A bit more depth and locations are well defined, more layers to the instrument positions. At a few moments I felt the stage was wider and some sounds appeared to the out side of the speakers as well. My first impression was the B3 crossovers were fuller bodied , but upon further listening the ALK are the clear winner with better clarity, detail and imaging. At lower levels they sound fine. I was afraid after reading reviews, the lower levels would be compromised , but I do not think so. The B3 crossovers are congested at moderate levels and beyond, probably at lower levels too, its just not objectionable at the lowest levels. I paid as much for the crossovers as I did for the Cornwall, But I am well satisfied so far. billy z Edited July 12, 2016 by Billzumwalt Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted July 11, 2016 Share Posted July 11, 2016 Always nice to "hear" a good story from a satisfied Klipsch owner. Enjoy! Quote Link to comment Share on other sites More sharing options...
jwc Posted July 11, 2016 Share Posted July 11, 2016 I've had the B3s before too. They aren't that bad with a recap. K33 ported sounds much more snappy with ESN. Quote Link to comment Share on other sites More sharing options...
Billzumwalt Posted July 11, 2016 Author Share Posted July 11, 2016 I've had the B3s before too. They aren't that bad with a recap. K33 ported sounds much more snappy with ESN. The original B3 caps measure right on with my rebuilt Heathkit IT28. I had previously installed a Stainless Steel screw thru the Coil as the original one was magnetic. ESN ? extreme slope network ? Been doing some more listening and I'll keep the ALK's. Its like now I just enjoy the music. Quote Link to comment Share on other sites More sharing options...
Schu Posted July 12, 2016 Share Posted July 12, 2016 My XO'S cost as much as my Cornwalls also... money well spent. Quote Link to comment Share on other sites More sharing options...
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