You don’t need anything that large for a super-tweeter. Something like that will of course constrain pattern control, and often what you want is a less directive result (not more directive, at least horizontally).
In any event, I don’t think a compression driver super-tweeter is the best solution for domestic sound quality. I’d look to ribbon’s/ planar‘s/ AMT’s.
Ex. on the cheaper end of super-tweeters 8k up (so long as it has the required system sensitivity or is active):
https://audioxpress.com/article/Test-Bench-Beston-Technology-RT002A-Ribbon-Tweeter
-it’s also on-sale right now for $25 each at Madisound.
Note: for integration you generally want either a fair bit of listening distance from the loudspeakers or the ability to vertically tilt the super-tweeter (or both).
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ScottG.
Thanks for replying.....
What if I used that wood waveguide at , say, 5kHZ on up.....would it be effective? If not what is the minimum high frequency that you would use that particular wood waveguide, where it's benefits would outway its somewhat restrictive high frequency dispersion characteristics?
PS: What about this ribbon tweeter from 5kHZ, or higher? It's rated at 95.5 db.
Thanks for replying.....
What if I used that wood waveguide at , say, 5kHZ on up.....would it be effective? If not what is the minimum high frequency that you would use that particular wood waveguide, where it's benefits would outway its somewhat restrictive high frequency dispersion characteristics?
PS: What about this ribbon tweeter from 5kHZ, or higher? It's rated at 95.5 db.
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The wood waveguide was pretty deep - you could go quite low (maybe 1.5 kHz) with it but it would depend on your desired high-pass result.
CAUTION: the photo of the actual waveguide is NOT symmetrical (near the CD entrance), I wouldn’t trust that manufacturer at all.
Yes you could use the reinforced ribbon w/ waveguide (prob. >4.5 kHz), though beware of diffraction on the low-end. Note though that horizontal dispersion is still very much limited when comparing to the Beston planar (though this could be useful for integration at lower freq.s for matching dispersion character). Note: I have recommended this driver before for a lower high-pass filter w/ a 2” exit & waveguide combo.. It really needs a modest “box”/“container” that has generous roundovers (sides) and could benefit with some 30 ppi foam pads over the vertical “mouth” of the ribbon’s waveguide.
CAUTION: the photo of the actual waveguide is NOT symmetrical (near the CD entrance), I wouldn’t trust that manufacturer at all.
Yes you could use the reinforced ribbon w/ waveguide (prob. >4.5 kHz), though beware of diffraction on the low-end. Note though that horizontal dispersion is still very much limited when comparing to the Beston planar (though this could be useful for integration at lower freq.s for matching dispersion character). Note: I have recommended this driver before for a lower high-pass filter w/ a 2” exit & waveguide combo.. It really needs a modest “box”/“container” that has generous roundovers (sides) and could benefit with some 30 ppi foam pads over the vertical “mouth” of the ribbon’s waveguide.
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When you say you have "recommended this driver before, and it needs a self contained box with round overs, and vertical pads on the horn opening mouth" (on each vertical side of the ribbon itself..correct?)...are you referring to the pictures of the ribbon tweeters I sent you?, or the one you originally recommended to me ( the Benson ribbon that's on sale at the moment)??
Thanks again....
Thanks again....
The Fountek (it’s a ribbon, the other is a planar)
-though to be fair the planar should also be mounted to a baffle/”box” with appropriate round overs but it does not need foam on the vertical edges.
Note: regardless of price between the two I would pick the planar for a super tweeter (>8 kHz). It’s going to give you a bit more “air” and detail up “top”. The ribbons will be quite a bit better below 9 kHz.
-though to be fair the planar should also be mounted to a baffle/”box” with appropriate round overs but it does not need foam on the vertical edges.
Note: regardless of price between the two I would pick the planar for a super tweeter (>8 kHz). It’s going to give you a bit more “air” and detail up “top”. The ribbons will be quite a bit better below 9 kHz.
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Thanks Scott....at the moment am using a Celestion Axi 2050 , CD, X AT >550 , loaded into a Yuichi A290 clone , up to approximately 10kHZ, and then the FOUNTEK ribbon at
9500 kHZ....
So far really liking this combination, however there's still a slight ( very slight) lack of air/ambience-detail, ....so perhaps the Beston will work out a little better .....
FYI, using double JBL 2235's , per side in the bass bin.....and the overall results are pretty impressive.
The only concern with the planar ( Beston) is the lower efficiency ( 92 db versus 95.5 on the Fountek ribbon). I guess I can just raise the gain levels on the super tweeter to match the rest of the system ( using DSP.. DBK DRIVERACK PA 2).
9500 kHZ....
So far really liking this combination, however there's still a slight ( very slight) lack of air/ambience-detail, ....so perhaps the Beston will work out a little better .....
FYI, using double JBL 2235's , per side in the bass bin.....and the overall results are pretty impressive.
The only concern with the planar ( Beston) is the lower efficiency ( 92 db versus 95.5 on the Fountek ribbon). I guess I can just raise the gain levels on the super tweeter to match the rest of the system ( using DSP.. DBK DRIVERACK PA 2).
Hello there, i was out of here for a few days, here the answer for the here: https://www.diyaudio.com/community/threads/best-compression-drivers-today-2022.382609/post-7451808 of @mark100
For the 5 ways i use a CX-A5000 as preamplifier so that i can connect a minDSP 2 X 4 HD with the cinch out and the Hypex FA123 with the XLR out together an old AV receiver is used as power amp for the 21 inch slob mounted SW and the L / R mounted kick bass FA123 for low midrange and the MT and HT horn. It was the only way to connect the CX A5000 with a long HDMI cable to the computer to get especially the very sensitive mid range horn free from audible noise, but only with additional passive attenuation, only active attenuation in the plate amp did not work
For the 5 ways i use a CX-A5000 as preamplifier so that i can connect a minDSP 2 X 4 HD with the cinch out and the Hypex FA123 with the XLR out together an old AV receiver is used as power amp for the 21 inch slob mounted SW and the L / R mounted kick bass FA123 for low midrange and the MT and HT horn. It was the only way to connect the CX A5000 with a long HDMI cable to the computer to get especially the very sensitive mid range horn free from audible noise, but only with additional passive attenuation, only active attenuation in the plate amp did not work
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it should: wider (horizontal) dispersion and lower Mms. What it doesn’t have is that “smooth” character, it’s a bit more “crispy”. In fact if you aren’t careful with the integration it can sound a bit “shouty” if you sit within the vertical window.
-go back and read the Audio Express Test Bench link: it’s average from 8 kHz up is closer to 95db (and prob. sounds “hotter” than that with the rise to 14-15 kHz of 97db - at 5 ohms).
Not sure if this link was already posted - but this is a great read about the background of the Axi2050 development and why drivers nowerdays are getting better.
https://www.prosoundweb.com/tech-focus-celestion-axi2050-wideband-axiperiodic-compression-driver/
I really hope they expand this line and bring a smaller driver with it's resonance >20kHz! Let it work from 1kHz to 20k - pretty sure I would buy that from day 1.
https://www.prosoundweb.com/tech-focus-celestion-axi2050-wideband-axiperiodic-compression-driver/
I really hope they expand this line and bring a smaller driver with it's resonance >20kHz! Let it work from 1kHz to 20k - pretty sure I would buy that from day 1.
No idea about that super tweeter, but why pay for several octaves of response that no human will be ever able to hear.
As an owner of a pair of clone Yuichi A-290 I find their performance even with TD-4001 subjectively unsatisfactory above 5.5kHz and I am not the only one. I would choose a tweeter you can cross lower in the unfortunate event that after living with them for a while, you come to a similar conclusion (you may not), you have something flexible enough to allow you to experiment with lower XO points.
I started at 8kHz and moved up in stages to as high as 13kHz and lived with 11kHz for a while. Eventually experimenting forced me to conclude that subjectively speaking for me and in this room that a much lower XO was much better sounding. My tweeters operate well from about 3kHz up. Other options might be better for you.
As an owner of a pair of clone Yuichi A-290 I find their performance even with TD-4001 subjectively unsatisfactory above 5.5kHz and I am not the only one. I would choose a tweeter you can cross lower in the unfortunate event that after living with them for a while, you come to a similar conclusion (you may not), you have something flexible enough to allow you to experiment with lower XO points.
I started at 8kHz and moved up in stages to as high as 13kHz and lived with 11kHz for a while. Eventually experimenting forced me to conclude that subjectively speaking for me and in this room that a much lower XO was much better sounding. My tweeters operate well from about 3kHz up. Other options might be better for you.
It's interesting that the vane spacing at the outer tips is around a wavelength here, and a small but relevant portion thereof at the inner tips. Not that I have to be talking anything specific like standing waves, but in any case the potential to effect a change.
My Yuichi A290 clones are working very well up to 9.5kHZ, ( x over at 550) with the Celestion Axi 2050's ( 2 inch CD)....Currently trying to find the right combination for the rest ( 10k to 20 khz), even though I can't here much past 13/14 kHZ anymore.
Have been using Fountek 3.5 Horn loaded Ribbons, and they sound excellent and have the capability of working down much lower if I decide to go that direction.
Today just installed two relatively inexpensive B & C mylar CDrivers (one inch), and even though they supposedly don't go all the way to 20kHZ, with a little EQ x 16kHz, they sound surprisingly good....and they to can work much lower, again, if I decide to go that direction.
Have been using Fountek 3.5 Horn loaded Ribbons, and they sound excellent and have the capability of working down much lower if I decide to go that direction.
Today just installed two relatively inexpensive B & C mylar CDrivers (one inch), and even though they supposedly don't go all the way to 20kHZ, with a little EQ x 16kHz, they sound surprisingly good....and they to can work much lower, again, if I decide to go that direction.
-increased lateral dispersion at lower freq.s plus a lower Mms driver for those high freq.s. 🙂
The slope character of the high-pass is important for getting that dispersion "blend".
If you're not use it that low, why choose this?
There's already lots of drivers work from 1k to 20kHz right?
How well do you think the DE360 would work in this waveguide? ( From 8 to 10khz up to 20kHZ).
I also may experiment with lower x over points
( 5kHZ).
Attachments
So far I am liking the Celestion Axi 2050 better than both the JBL 2450 H with Aquaplas coating, and the B & C DCM 50.
THE B & C is better then the JBL, and it's a very nice CD.....smooth, low distortion presentation.
The Celestion 2050's just seem a little more relaxed and dynamic at the same time, which makes for a very enjoyable and engaging experience. Even when pushed hard ( I am no head banger, and in my later years I listen at much reduced levels from my youth, however I still occasionally like to push the needle...probably mid 90's SPl peaks....and unlike what one blogger reported ( Mr. Crowe) the Celestion just cruise along....no hardness or strident characteristics at all.
Very enjoyable to say the least.
thanks for the review , i have bought a pair of B&C DCM50 to compare with my RCF 850ND 2.0. there are both different beast , the RCF as it is a 1.4inch driver with a 2inch adapter is better on the top and can be listened to it without the need of a tweeter . and on the orher side the B&C DCM50 is very smooth ( some will find them too smooth ) less clean on the fine details compare to the RCF but with my 220hz Tratrix horn and needs a tweeter after 8K but i can push them very low ( 380hz) and their tones match perfectly with the Tad woofer. as i am in 3 way now with a nice little Fostex T96Htweeter . iwill keep the B&C as for me the difference in the low crossover ( 380hz versus 500hz ) is what i prefer vs more details and extension.
notice that unlike the RCF who are pretty flat from 500 to 15K the B&C DCM50 requires some pretty big correction +4db at 3.5khz and -4db at 1.2khz to get flat ..
( P.S the RCF850ND 2.0 are on the swap meet )
the T96H tweeter is really small ...
notice that unlike the RCF who are pretty flat from 500 to 15K the B&C DCM50 requires some pretty big correction +4db at 3.5khz and -4db at 1.2khz to get flat ..
( P.S the RCF850ND 2.0 are on the swap meet )
the T96H tweeter is really small ...
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