tigerwoodKhorns Posted July 8, 2005 Share Posted July 8, 2005 Is the JBL 2526 a good match for an Altec 511B horn used in a K Horn (400HZ corssover)? More specifically, is it a big improvement over the K55? Thanks, Chris Link to comment Share on other sites More sharing options...
Tony Reed Posted July 8, 2005 Share Posted July 8, 2005 I've tried the 511B (with various drivers) and a Beyma CP25 and really didn't care for it. Tony Link to comment Share on other sites More sharing options...
Marvel Posted July 8, 2005 Share Posted July 8, 2005 Chris, Do you mean a 2426 driver? I haven't found a 2526 driver anywhere. If so, the 2426 uses a titanium diaphragm, and really shouldn't be used lower than 500Hz. Some say is is a little harsh, but hey, it's a JBL and they really make great stuff. Drops like a rock over 15K as well, but if you still use a tweeter, that isn't an issue. Bruce Link to comment Share on other sites More sharing options...
Al Klappenberger Posted July 8, 2005 Share Posted July 8, 2005 Chris, If you mean the JBL 2426h driver, I say avoid it unless you plan to use it ONLY as a midrange. I used it on a 511b and on 811b horns. I am now using 2426h drivers on my Trachorns. They have a continuous drop in response as you go up in frequency. You need to cross them over at 6 KHz if you use them for a squawker. Bruse, When used full-range they sound quite dull, not harsh. Al K. Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted July 8, 2005 Author Share Posted July 8, 2005 ---------------- On 7/8/2005 12:40:17 PM Al Klappenberger wrote: Chris, If you mean the JBL 2426h driver, I say avoid it unless you plan to use it ONLY as a midrange. I used it on a 511b and on 811b horns. I am now using 2426h drivers on my Trachorns. They have a continuous drop in response as you go up in frequency. You need to cross them over at 6 KHz if you use them for a squawker. Bruse, When used full-range they sound quite dull, not harsh. Al K. ---------------- Al, Yes, I meant the 2426 (or the older 2425). I plan on using it as a midrange for my K Horns with your Type A networks, so the response needed will be 400 hz to 5800 hz. I already have K55's and I am wondering if I will see an improvement by going to the JBL. I am using Baby Cheeks fro tweeters. Chris Link to comment Share on other sites More sharing options...
Marvel Posted July 8, 2005 Share Posted July 8, 2005 I think it would be a stretch to cross over that low (400). What crossover are you using? You could have a try with these Seleniums: http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=264-216&DID=7 I like the JBL stuff, but these aren't bad drivers either. Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted July 8, 2005 Author Share Posted July 8, 2005 ---------------- On 7/8/2005 1:33:23 PM Marvel wrote: I think it would be a stretch to cross over that low (400). What crossover are you using? You could have a try with these Seleniums: http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=264-216&DID=7 I like the JBL stuff, but these aren't bad drivers either. ---------------- I am using Al's Type A's (will upgrade to ESN's). Back to the original question. Will the JBL's (or the Seleniums) be a good UPGRADE from the K55's? Thanks, Chris Link to comment Share on other sites More sharing options...
Al Klappenberger Posted July 8, 2005 Share Posted July 8, 2005 Chris, When I replace my K55v drivers (soler terminal version) to the 2426h I noticed a slightly cleaner sound but it was not nearly as dramatic an improvement is moving from the K500 horn to the Altec 511 horn. I would also not use the 2426h on a Khorn crossed at 400 Hz with only a 6 dB / octave network. I think there is too much danger of smashing the diaphragm into the phase plug. I would only use them with the extreme-slope network. Al K. Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted July 8, 2005 Author Share Posted July 8, 2005 ---------------- On 7/8/2005 1:33:23 PM Marvel wrote: I think it would be a stretch to cross over that low (400). What crossover are you using? You could have a try with these Seleniums: http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=264-216&DID=7 I like the JBL stuff, but these aren't bad drivers either. ---------------- Marvel, Have you compared the Selenium driver to the K55? How does it compare? Chris Link to comment Share on other sites More sharing options...
D-MAN Posted July 8, 2005 Share Posted July 8, 2005 Warning! That's a 2" throat 4-bolt driver, although it could be used in a 1" throat horn via an adaptor. I have the Selenium D-305 phenolic and when I upgrade, the D-408TI is a reasonable choice. Based on the cheap ones I have now, they are smooth and reliable, even at the 400Hz crossover point, which I used to use. DM Link to comment Share on other sites More sharing options...
Marvel Posted July 8, 2005 Share Posted July 8, 2005 Sheesh! I'm fallin' asleep on the job. I knew that was a two incher. I apologize for the confusion. Thanks for keeping me in line... Link to comment Share on other sites More sharing options...
D-MAN Posted July 8, 2005 Share Posted July 8, 2005 Yeah, it's a dirty job, but someones got to do it! DM Link to comment Share on other sites More sharing options...
djk Posted July 9, 2005 Share Posted July 9, 2005 The JBL titanium drivers (including 2" throat models) do not sound their best below about 650hz, even with a steeper slope crossover. Link to comment Share on other sites More sharing options...
ZAKO Posted July 9, 2005 Share Posted July 9, 2005 The JBL Aquaplazed coated diaphrams (damped) sound better than undamped units JBL 2450SL (D8/16 2450SL) Link to comment Share on other sites More sharing options...
djk Posted July 9, 2005 Share Posted July 9, 2005 Yes, in the HF. The suspension has so little freedom that they sound kind of 'tight' when crossed over low. Testing was done at the 100mW level and they sounded much better when the crossover point was raaised to 650hz. Horns tried were JBL 2380A, 2397, 2350, EV HP940, HP640. The HP640 was judged to sound the best, but the JBL 2380A was used because of size limitations. Despite the extra problems, I prefer a two-way top end (a tweeter). The drivers may be chosen for best MF without considering the HF, and the HF selected for best VHF without considering the MF. Link to comment Share on other sites More sharing options...
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