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Author Topic: Ultrasone Pro900 (Not-Defective) Frequency Response and CSD Waterfall Plot  (Read 9423 times)

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Marvey

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Ultrasone Pro900 (Not-Defective) Frequency Response and CSD Waterfall Plot



OMG BASS. Yup I listened to them first. There so much bass that the rest of the spectrum doesn't matter. These are not defective like the earlier pair. I think the earlier pair was simply just blown in both drivers. (Note that I used a -36db scale on the defective pair. Most FR measurements should be on a 30db scale.)

I've also attached a 300Hz triangle wave.
« Last Edit: October 20, 2012, 05:53:47 PM by purrin »
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extrabigmehdi

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Great. So do you find them enjoyable somehow, or it's pure audiophile torture ?
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Marvey

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They very well could be enjoyable if I could hear something else other than just massive low quality bass.
« Last Edit: October 20, 2012, 05:59:41 PM by purrin »
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Questhate

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I like how you called these (functional) or (defective), rather than the (good) pair  :)p13

As usual, driver matching is all over the place on this Ultrasone. No wonder the imaging on Ultrasones are so weird.

@extrabigmehdi -- depends what you find enjoyable. These definitely aren't audiophile caliber. These are for people who put 15" subs in their car and EQ the bass all the way up, or people who go to techno nightclubs wearing Versace shirts with the first four buttons-undone.

The tonality is weird, that ringing at 6.5K (and the 12.5dB peak there too) is VERY noticeable.

I have a pair, that i keep around to listen to EDM. The bass is overblown as hell, but oddly satisfying in a sadistic sort of way.

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Anathallo

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What is S-Logic, and does it impact any of these measurements?

Also, I imagine a perfect triangle wave is triangular, but what does it represent?
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extrabigmehdi

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Well I'm wondering how it compare with IEM that shows a freq response with overblown bass, because obviously the senn IE8, or yamaha eph-100 sounds fine.
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Marvey

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What is S-Logic, and does it impact any of these measurements?

S-Logic impacts measurements similarly to how moving the headphone around the coupler impacts the measurements. I think I ran tests of two different headphones on this site to see the results.

It does make some logical sense as I do wear my headphones forward and low when I am able to, especially the HD800. I feel wearing the headphones low and forward helps to take the edge of the HD800.

Also, I imagine a perfect triangle wave is triangular, but what does it represent?

Yes. A perfect triangle wave should be a triangle. The triangle wave represents odd order harmonics. Just that the influence of the higher order harmonics roll of much much faster (inverse ^2 instead of just the inverse as with a square wave.)

As far as what triangle waves mean, I have no clue.
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Questhate

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Well I'm wondering how it compare with IEM that shows a freq response with overblown bass, because obviously the senn IE8, or yamaha eph-100 sounds fine.

"sounds fine" doesn't necessarily mean accurate. iBuds "sound fine" to millions of people.
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Marvey

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Also important to note NOT to compare measurements on this site with measurements from other sites. Heck, probably not even a good idea to compare IEM measurements to headphone measurements here on this site either.

On the Pro900: I did not assess the treble qualities with my usual test tracks nor did I want to. The headphone did not last more than 5 seconds on my head. This is probably the first headphone and made me dizzy with bass as opposed to treble ringing of death. I now want to vomit and go back to my bed and roll around in my blankets.

Quest's subjective impressions (considering that he owns them) are likely spot on (and consistent with the measurements.)
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rhythmdevils

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Well I'm wondering how it compare with IEM that shows a freq response with overblown bass, because obviously the senn IE8, or yamaha eph-100 sounds fine.

I don't understand this sentence.
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