Sensitive dome tweeters

[BHTX]

Out of boredom and curiosity, I compiled a list of sensitive dome tweeters, and thought I might as well share with the community. They're pretty much all rated at least 93dB @ 2.83V/1m or greater. Both 8 and 4 ohm impedances were considered. Along with diaphragm size and material, I also listed the specified Qts values when available. I think I had thoughts of a relatively efficient large 3-way with a dome, using no higher than LR2 acoustic slopes throughout. Anyway, I'm sure I've left out plenty of tweeters, so feel free to add to the list. It's just a simple txt file, so if the formatting doesn't look right, try changing your font to 10pt Verdana in notepad.exe, as that's what I was using.

[el`Ol]

Sica, Supravox and Ciare are not included.

[CLS]

BRAND/MODEL SIZE/MATERIAL OHM Fs (Hz) Qts dB

Monacor DT-74/8 1/2" Soft 8 2000 - 98

Is this possible? Or a typo?

[BHTX]

Originally Posted by el`Ol

Sica, Supravox and Ciare are not included.

Thanks! I'm familiar with them, just forgot. I'll look at their offerings.

Originally Posted by CLS

Is this possible? Or a typo?

It's what they claim: MONACOR INTERNATIONAL:Product detail page

[CLS]

Er... I cheked that out, too. (just before this)

It must be someone's typo. Though anything is possible, I just don't believe this 1/2" tweeter can be that sensitive.

[woody]

Looking at the frequency responce graph it looks like it's only about 90db at about 2k
and the 98db rating only comes into play at about 4k and higher. Then look at the photo and you see the face plate realy is a short horn.

[Helmuth]

Originally Posted by CLS

Er... I cheked that out, too. (just before this)

It must be someone's typo. Though anything is possible, I just don't believe this 1/2" tweeter can be that sensitive.

To my opinion monacor ads often 3 dB.

High sensitive dome Audax.

http://www.audax-speaker.de/index.php?module=shop_articles&index[shop_articles][action]=details&index[shop_articles][category]=3&index[shop_articles][data][shop_articles_id]=55

[ScottG]

Originally Posted by Helmuth

To my opinion monacor ads often 3 dB.

High sensitive dome Audax.

Yes, Monacor is guilty of "gilding" their graphs. ..and not solely based on enhancing 1watt/1meter performance.

The more efficient newer "Audax" drivers have really bad non-linear distortion performance..

https://www.madisound.com/store/manuals/TW025A26.pdf

[Helmuth]

Originally Posted by ScottG

Yes, Monacor is guilty of "gilding" their graphs. ..and not solely based on enhancing 1watt/1meter performance.

The more efficient newer "Audax" drivers have really bad non-linear distortion performance..

https://www.madisound.com/store/manuals/TW025A26.pdf

That is strange they claim lowest distortion level with this tweeter in the describing?

Your plot shows 5% distortion not what we call low, at 1W it puts out 95dB. THD has to be compared to the same loudness level on 1mtr not at 1W.

[ScottG]

Originally Posted by Helmuth

That is strange they claim lowest distortion level with this tweeter in the describing?

Your plot shows 5% distortion not what we call low, at 1W it puts out 95dB. THD has to be compared to the same loudness level on 1mtr not at 1W.

It's not "my" plot.. and it is odd. ..you would think that ACC (who makes Audax drivers now), would know what they are doing with their measurements. Perhaps something was omitted on the graphs display?



Here is a a "Harman" run test of their most efficient tweeter:

https://www.madisound.com/store/manuals/TW025A28.pdf


It's not good either, but at least it's a THD plot and not a discreet plot of each harmonic.