We're having a similar discussion in an AR2ax tweeter upgrade thread right now. It's often either cabinet modifactions or custom flanges to make modern tweeters fit, mechanically, but the REAL issue is performance objectives.
http://audiokarma.org/forums/showthread.php?t=132936
If the desire is to restore the original sound, use the original or known equivalent components. If the objective is to experiment or upgrade, recognize that you're doing a speaker redesign, in fact, and approach it from that perspective using the appropiate toolbox.
I suspect everyone recognizes by now that, generally speaking, I don't give one whit about restoring original performance unless that's the specific intent. In fact, whenever I look in detail at vintage designs using contemporary tools, they rather suck, and they sound bad, too, by comparison.
With respect to tweeters, specifically, I've looked at a Tang Band (for AR4x,) a Fostex, and now a Morel, and have prior experience with JBL 035tiA, Crites, Eminence, and others. Bottom line: I can make any of them sound good or great, even, but it's not a slam-dunk plug-'n'-play retrofitting modern tweeters into these vintage systems, rather, each of them is a different, and more comprehensive, loudspeaker design project.... :yes:
http://audiokarma.org/forums/showthread.php?t=132936
If the desire is to restore the original sound, use the original or known equivalent components. If the objective is to experiment or upgrade, recognize that you're doing a speaker redesign, in fact, and approach it from that perspective using the appropiate toolbox.
I suspect everyone recognizes by now that, generally speaking, I don't give one whit about restoring original performance unless that's the specific intent. In fact, whenever I look in detail at vintage designs using contemporary tools, they rather suck, and they sound bad, too, by comparison.
With respect to tweeters, specifically, I've looked at a Tang Band (for AR4x,) a Fostex, and now a Morel, and have prior experience with JBL 035tiA, Crites, Eminence, and others. Bottom line: I can make any of them sound good or great, even, but it's not a slam-dunk plug-'n'-play retrofitting modern tweeters into these vintage systems, rather, each of them is a different, and more comprehensive, loudspeaker design project.... :yes: