Hi all. I want to build an open baffle speaker using a faital pro 4fe32 crossed over to a tweeter at somewhere between 4-7khz. My hopes is to have a very well dispersing tweeter specifically with good dynamic range since the 4fe32 is going to be crossed at around 600-700hz with all lr4 crossovers if necessary for dynamic range. But I want to either use a dipole tweeter or use dual opposing tweeters like the lx521 that can keep up with similar sensitivity and dynamic range to the 4fe32. I'm willing to cross closer to 7khz if necessary to get the right tweeter with the right sensitivity and dispersion.
So based on that jumbled ramble of words, anyone have a potential good tweeter suggestion for a dipole?
So based on that jumbled ramble of words, anyone have a potential good tweeter suggestion for a dipole?
Good dispersion needs some clarification for you. If you go true OB dipole, then you won't have 'good' or 'wide' dispersion from the high frequencies as they will cancel as dipole dictates.
It's the great 'myth' projected by OB dipole enthusiasts that pull the speakers into the middle of the room for optimal listening where I would certainly challenge that ANY well designed box speaker would perform equally well if not better as early reflections are eliminated by PLACEMENT and not design.
It's the great 'myth' projected by OB dipole enthusiasts that pull the speakers into the middle of the room for optimal listening where I would certainly challenge that ANY well designed box speaker would perform equally well if not better as early reflections are eliminated by PLACEMENT and not design.
Not really why I want high dispersion but OK. I guess since you completely understand said "myth" and what "enthusiasts" want, well I don't even know what your response has to do with my question honestly.
All I wanted to know was a tweeter that would perform well off axis and be able to be crossed around 4-7khz with as much dynamic range and sensitivity as possible. But instead I have been brought to the knowledge of how OB is completely wrong.
But actually tho, chill out. I wanted advice on tweeters, not on my choice of speakers. Im choosing open baffle because A. box/panel resonances are annoying B. Open baffle speakers are easier to build especially when active DSP is already planned and C. Ive only heard them once which were the lx521's by linkwitz in his own living room and it was the best speaker experience I have ever had by far. All I want is to attempt to recreate that experience. So literally none of my reasoning for open baffle had to do with reflections or even room acoustics really. But thanks for trying to help.
Edit: also just realized I posted this in full range by accident. Meant to be in multiway. Not sure how to move the thread if I can, or if a mod can help. Thanks
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Plenty of high quality tweeters on the market with reasonable off-axis performance. Depends how much you want to be spending and how you class 'good dispersion'. Seas have a few. The Millenium as Linkwitz uses in his Orion would be OK. Slightly down in nominal sensitivity terms, but that's only a nominal and in practice they should match up well. At the more affordable end the TFF/TFFC should do the job. Scan have a couple; the 9130 isn't too bad, or if you're feeling (very) flush the 9900 Revelator, which measures better than Scan's published graphs. If you fancy a slightly left-field option, you might want to consider a planar design, either a ribbon or magnetostatic. Poor vertical dispersion, but usually good horizontal behaviour; Hi-Vi's RT2C-A for e.g.
Wow those HiVi's have actually been exactly what I've been looking for...both the RT2C-A and it's little brother the RT1C-A. They're perfect! I may even buy both and see which one I like better! Thank you!!!
how about this one? I used it many times...sounds great
Selenium ST200 Super Tweeter
(I have not read whole thread)
Selenium ST200 Super Tweeter
(I have not read whole thread)
re:ST200 - do you think it sounds as nice as the old ST324 and 320 slot tweeters? - those are among my favorites but curiously, discontinued. (-those had very wide horizontal dispersion)
One favorite of mine is the Apex Jr. soft dome- as with other very inexpensive drivers, QC is sometimes lacking. I've found that by removing the ferrofluid and carefully aligning the diaphragm, this issue can be eliminated, and it's a fantastic, 96dB soft dome, with the inherent wide dispersion (up until 10k where it begins meaningfully narrowing).
For bipole/dipole, they're inexpensive enough to use front and rear units together.
For bipole/dipole, they're inexpensive enough to use front and rear units together.
yes, I used those sloted seleniums (now gone) with 70deg dispersion, some people like it...I used it only for PA system, it worked great
for domestic, 40deg dispersion seems more adequate, no need to bounce the heights of the walls
I personally use neo3 in dipole configuration for my main system...everyone should decide by experimenting
For xover, I would put the 4fe32 in a closed box and determine the -3dB point. Add another 2nd order highpass with Q=0.7 that is - 3dB at this xover point and you are set for the low end. For the high xover point, try to get a tweeter that will get you as close as possible to 2kHz as possible.
is 96dB sufficiently sensitive? SB Acoustics :: SATORI TW29BN
Out of curiosity, has anyone ever published measurements of the Heil AMT1? Still for my money one of the benchmark achievements in audio transducer designs. I've built a couple of bespoke systems with them, and if I had and extra $800 or so per pair, would use them for a personal pair in a New York minute.
An externally hosted image should be here but it was not working when we last tested it.
Out of curiosity, has anyone ever published measurements of the Heil AMT1? Still for my money one of the benchmark achievements in audio transducer designs. I've built a couple of bespoke systems with them, and if I had and extra $800 or so per pair, would use them for a personal pair in a New York minute.
Excellent driver. Personally I prefer the slightly cheaper Satori TW29R with the ferrite motor (not quite the sensitivity; about 92dB on a 4ohm coil). Best dome tweeter I've ever heard.
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