Some speaker driver measurements...

[motokok]

Fascinating! Something nice of both is a slightly lower resonance frequency than most modern domes.

 

[HiFiCompass]

The review of the BlieSMa 3" TeXtreme dome midrange:

https://hificompass.com/en/reviews/bliesma-m74t-6-74mm-textreme-dome-midrange

 

[diyiggy]

Hi,
Do you find they image or make a better soundstage than a SS 12Mu for instance.

Than Textreme should sound something between the Be and the paper's version ?!

 

[HiFiCompass]

I didn't listen to them in stereo yet🙂

 

[HiFiCompass]

The measurements of the old but good SEAS 76MF (H304) fabric dome 3" midrange:

https://hificompass.com/en/speakers/measurements/seas/seas-76mf-h304

 

[capslock]

The measurements of the 3" Beryllium dome Pioneer DS-047A midrange:

https://hificompass.com/en/speakers/measurements/pioneer/pioneer-ds-047a

What were the frequency range and slopes on the DS-047A? Distortion hits -60 dB at about 1.2 kHz, and by 3 kHz, there is too much droop and dispersion, so that leaves only about 1.5 octaves.

The Yamaha-branded JA-0801 may not look as pretty in on-axis FR, but distortion is a tad better.

 

[HiFiCompass]

I didn't quite understand your question

 

[capslock]

How was it used in the 1000X, i.e. crossover points and slopes?

 

[HiFiCompass]

Frequency responses are measured without any filters

 

[looneybomber]

What were the frequency range and slopes on the DS-047A? Distortion hits -60 dB at about 1.2 kHz, and by 3 kHz, there is too much droop and dispersion, so that leaves only about 1.5 octaves.

The Yamaha-branded JA-0801 may not look as pretty in on-axis FR, but distortion is a tad better.

Within that Hificompass driver measurement page, there is a tab called “Features/Comments”.
If you click it, there is a link to more information about that speaker at Audio-database.
The info you’re looking for is in there.

 

[Boden]

It is rather interesting to compare the H304 with the Bliesma M74-6. The differences, in particular at 2.83 Volt are far smaller than the price difference would suggest. It is a pity the Volt 75 mm dome is not available on HifiCompass for direct comparison.

 

[mikessi]

How was it used in the 1000X, i.e. crossover points and slopes?

https://audio-database.com/YAMAHA/speaker/ns-1000x.html --

Crossover frequency

500 Hz, 6000 Hz (12dB/oct.)

The same spec as NS1000, NS1000M, NS2000

 

[ginetto61]

It is rather interesting to compare the H304 with the Bliesma M74-6. The differences, in particular at 2.83 Volt are far smaller than the price difference would suggest. It is a pity the Volt 75 mm dome is not available on HifiCompass for direct comparison.

https://audioxpress.com/article/test-bench-volt-loudspeakers-vm752-3-midrange-dome-driver

 

[Boden]

What I meant was measurement under exactly the same conditions and with the same gear for direct comparison, so not a measurement in general.

 

[ginetto61]

Good luck then 👍

 

[Storm Mastering]

One thing to keep in mind though, the Bliesmas are 4 to 7 dB more sensitive (depending on the model) so a direct comparaison at 2.83V isn't fully representative.

 

[hifijim]

the Bliesmas are 4 to 7 dB more sensitive (depending on the model) so a direct comparaison at 2.83V isn't fully representative

Yes - I find it more informative to compare drivers at a similar SPL level rather than a similar voltage level.

 

[diyiggy]

More often than not, hificompass sales down the input voltage of sensitive drivers in his measurements. 2.83V/2 and more.

 

[Storm Mastering]

Yep. To compare at relative SPL for the M74B @ 2.83V, the H304 would need a voltage between the 5V6 & 8V available on Hifi-compass.
Still, you can without much risk extrapolate between these two curves to estimate where that should land 🙂

 

[HiFiCompass]

A review of the new BlieSMa M142T-6 7" TeXtreme dome midrange:
https://hificompass.com/en/reviews/bliesma-m142t-6-7-textreme-dome-midrange