in my new listening room my tweeters does not sound right, they sound dull and lacking in sparkle/air/life, dispersion is simply not sufficient. so i tried a pair of small sb19st's and that was a relief, but there is always room for improvements, so which is the best 19mm tweeter in your mind? 
Getting the best sound from your 19mm tweeter.
Can you post a pic of your cabinet, and crossover ckt?
-Baffle edge diffraction distortion can "smear" what you hear from the delayed arrivals of edge reflections.
-Irregular phase shifts across the crossover region can create a soundstage with unstable images.
-Lobing effects from a large T-M separation can create a soundstage with unstable images across the crossover range.
-Study the polar response of the midrange around the crossover frequency. If beaming is present, the soundstage will be unstable.
Can you post a pic of your cabinet, and crossover ckt?
-Baffle edge diffraction distortion can "smear" what you hear from the delayed arrivals of edge reflections.
-Irregular phase shifts across the crossover region can create a soundstage with unstable images.
-Lobing effects from a large T-M separation can create a soundstage with unstable images across the crossover range.
-Study the polar response of the midrange around the crossover frequency. If beaming is present, the soundstage will be unstable.
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thank you, yes, those seems to be the standard suggestion, but i have not seen any measurements yet that shows they are superior
thank you, i will try upload some pictures. the problem i have is high in freq, above 5khz, there is a lack of dispersion, for 1 inch domes s-s "hds-tweeter" did best but not as good as the sb19. i am tempted to try a "small" ribbon after seened this
thank you, not the same driver i know but i tested 19tff1, it sounded a bit like a dinky toy, i prefere sb19st more
-it's not even close (..look to the off-axis freq. response seen here):
SB Acoustics SB26ADC-C000-4 | HiFiCompass
..it is however an excellent tweeter, it's just that it won't provide what you are looking for.
-that's a matter of bandwidth.. it is a "dinky toy" if you try to push it to low in freq..
HiVi has some little planars that are particularly good for HORIZONTAL dispersion, but they too will sound like a "dinky toy" if you go much lower in freq. than what they should be used at (..which is a high-pass around 5 kHz).
Even the Hiquphon suffers from pressure loss off-axis.. BUT it does have good extension (plus excursion), so it's not going to sound like a "dinky toy".
I agree here.......and would lend that it’s hard to get a small format tweeter to cross low enough to avoid both the crossover region polar anomalies or the center to center spacing unless a very small ( read 3 to 4 inch) midwoofer is used......which rules out a 19mm for a two way in my book. And for a dedicated three way, the small mid required usually sucks up all the system efficiency and reduces power handling.. .........always a compromise because the off axis response off a small dome is usually reallly nice!
A couple of mm bigger, the SB21SDC is better than the SB19ST. I've used both and the SB21SDC works well off axis (forget about the 60° but look at the 30°), higher SPL, higher power handling and lower Fs.
FWIW, I've also used the SB26ADC and SB26STAC which are better tweeters than the above but may not give the dispersion you desire.
FWIW, I've also used the SB26ADC and SB26STAC which are better tweeters than the above but may not give the dispersion you desire.
-that's a matter of bandwidth.. it is a "dinky toy" if you try to push it to low in freq..
HiVi has some little planars that are particularly good for HORIZONTAL dispersion, but they too will sound like a "dinky toy" if you go much lower in freq. than what they should be used at (..which is a high-pass around 5 kHz).
Even the Hiquphon suffers from pressure loss off-axis.. BUT it does have good extension (plus excursion), so it's not going to sound like a "dinky toy".
when it all comes around, good and suitable drivers seems to be hard to find, lucky those who can build their own drivers
perhaps, who have a perfect hearing? but this is an issue of room acoustics, listening distance and tweeter lack of dispersion. have you ever heard a pair of loudspeakers in an anechoic chamber, what do you think works best, a small diaphragm tweeter or a large?
yes, there are always compromises, but dispersion is high priority. Distortion wise, is sb21sd much better than sb19?
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