Super tweeter for HI RES

[PeteMcK]

Being sceptical, I looked for some English language info on ultrasonic perception. This guy seems to cover it well;
http://archimago.blogspot.com/2017/04/musings-do-we-need-those-20khz.html
I do use piezo supertweeters, but that's to aid my aged hearing, not for any 'audiophile' reasons.

 

[davidsrsb]

All of the supertweeters that I have seen tested, have plenty of output at 10 kHz and often much less. The Aperion goes down to 5 kHz. I know that I could hear either of these models, nothing to do with >20 kHz
https://www.townshendaudio.com/supertweeters/
https://www.avnirvana.com/threads/a...weeter-extend-that-high-end-full-review.8014/

 

[Moondog55]

I've got 3 sets of those cheap Fostex Supertweeters here. Never got around to using them.
Supposedly good to 40K +
Link to old description for interest

https://www.jaycar.com.au/100mm-ribbon-tweeter-bargain/p/CT2023

 

[Audio>X]

All of the supertweeters that I have seen tested, have plenty of output at 10 kHz and often much less. The Aperion goes down to 5 kHz. I know that I could hear either of these models, nothing to do with >20 kHz
https://www.townshendaudio.com/supertweeters/
https://www.avnirvana.com/threads/a...weeter-extend-that-high-end-full-review.8014/

Fascinating > but VERY expensive.

 

[Audio>X]

I've got 3 sets of those cheap Fostex Supertweeters here. Never got around to using them.
Supposedly good to 40K +

Tandy sold poor plastic copies of the proper metal Fosters. I once had the opportunity to compare them > the Tandy's were crap.
I hope you've got the 'real deal', and if so DO use them someday. They're really good above 8Khz!
PS. Foster speakers were for the 'consumer market' and Fostex are pro. drivers.

 

[Freedom666]

you can use Visaton Frs5x as super tweeter it goes up to 38khz.

Here a measurement of it (in a loudspeaker project "Cheap trick 310")

its only 17 euro

 

[adason]

But it starts severely beaming at 10kHz. So what if it resonates at 38kHz? Those are breakups. I thought main feature of supertweeter besides going past normal tweeter is wide dispersion.

 

[adason]

This little foster costs the same...

 

[Moondog55]

Looks like the little ribbon Foster/Fostex linked above

 

[adason]

Exactly!

Was just trying to demonstrate non-beaming.

 

[ticknpop]

I have Raven ribbons workinh with ML electrostatics - really like the HF detail

 

[Audio>X]

This super tweeter is just TOO BIG 😉

 

[davidsrsb]

This little foster costs the same...

Plenty of output down to 3 kHz, so you need a high pass filter

 

[adason]

Definitely. Other supertweeters have plenty of output at 2kHz. You need to decide on crossover. (I use 7kHz).

Example of other supertweeters and their response.

 

[adason]

And another.

 

[kgrlee]

Of course not adding it to the box of my speakers so as not to damage them, but rather in its own box superimposed on my speakers.

If you send me US$999 in used bank notes (no Confederate money please) I will send you a pair of these mythical beasts to extend the frequency range of your speakers to at least 197.8kHz.

Would this be effective to transform my boxes into HI RES speakers?

Your speakers will be future proofed against any further advances of HI in the Fi or RES. You don't even have to connect them; just place them on top of your present speakers.

 

[bwaslo]

I've been working with calibrating microphones above 20kHz. The rather cheap Sony SS-CS5 speakers have a small supertweeter that pretty comfortably reaches 50kHz, and even has usable energy for comparison calibration to nearly 80kHz. Directly on-axis, of course.

Here's a measured response of the SS-CS5 at 1 meter, 10dB down at 80kHz on axis. Measured with a very recently calibrated ACO 1/4" type 1 microphone. Cost of the speaker is about $200 a pair currently. About a year ago they were getting blown out at $77 per pair!

Cheap enough still for anyone who wants to experiment with audibility of supersonic program content. You could pull the supertweet out of an SS-CS5 and still have way less invested than if you bought standalone supertweeters. Also they probably beam less overall than other supertweets , as it's like a half inch dome.

 

[adason]

Yup, i got a pair long time ago, just because it was cheap, out of curiosity. Gave them to a friend. Made small stands for them too. With two subwoofers, he is pretty happy with the sound. Gave him yamaha receiver too...

 

[adason]

My measuring does not go past 20kHz.
https://www.diyaudio.com/community/...f-speakers-for-under-1000.240125/post-6436321