If you recone a 2231A basket with a 2235H kit is it the exact acoustical equal to a 2235H unithttp://audioheritage.csdco.com/vbull...cratchchin.gif
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If you recone a 2231A basket with a 2235H kit is it the exact acoustical equal to a 2235H unithttp://audioheritage.csdco.com/vbull...cratchchin.gif
AlNiCo isn't SFG ferrite but it's the best you can do.
So are you saying Yes? :D as far as acoustics go,and a little different in power handling due to better heat venting in the H basket.?
Lower distortion in the SFG ferrite assembly along with better heat sinking for greater power handling. Some people can hear the difference, other people couldn't care less.
Giskard, I thought JBL did SFG because they had to - because of ferrite. Have I got that wrong?Quote:
Originally Posted by Giskard
They did do ferrite because they had to, but plain ferrite sux so they came up with SFG ferrite. I posted the tech sheet all about it somewhere on here. The new AlNiCo assembly in the 1500AL fixes all the "problems" with old AlNiCo V as well as using all the goodies associated with the SFG ferrite assemblies.
*****
Here's something:
http://audioheritage.csdco.com/vbull...ead.php?t=4746
And THAT, friends, is why Widgets shipment is all the envy this week!..............Quote:
Originally Posted by Giskard
He finally got them?
If anyone wants 1500AL's, now is the time to order them while Harman is in chaos. :p
http://www.audioheritage.org/vbullet...ead.php?t=4738Quote:
Originally Posted by Giskard
Scroll down.
$? per driver?
Background on the 1500AL and its relationship to the evolution of JBL bass drivers can be found here:
http://www.audioheritage.org/html/pr...ogy/1500al.htm
I'm in the process of getting a set of 2225H's reconed as 2235H's. Their future home will be in 4343's. I'm going to keep the 2231A's. Should I decide to sell the 4343's, they would be more valuable with original equipment installed. However, the 2235H's sound amazing in that cabinet!Quote:
Originally Posted by Giskard
This message comes from JBL Dog :dj-party:
Bottom line, if the 2231 alnico magnet is fully charged (re-gaussed), and the woofer is in a multi-way speaker where it doesn't have to go very high (ie, like a 4343 or its ilk, where the low-pass crossover is 290 Hz or so), then it'll be VERY hard, if possible at all, to hear the difference between a 2231 frame vs. a 2235 frame, both re-coned with a 2235 kit.
If you're dealing with a more "wide-range" application of the 15" woofer (like say, a 2234 in a 4435, where it's used up to about 1KHz), then the lower IM distortion of the SFG magnet assembly MAY make enough of a difference to side with the 2235 frame over the 2231 alnico. But, it'll stlll probably be a pretty subtle difference, unless you're running the driver to a high excursion level frequently...
Regards,
Gordon.
Exactly! Just because the guys at JBL can hear the difference doesn't mean we out here in the field can.
Yeah, I tend to sell the alnicos to collectors, and use the SFG drivers, out of general principle... but it's still possible to get a lot of good ol' "boogie" out of those old alnicos... :D