Biblob
Addicted to Fun and Learning
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Yes, please. Just the direct sound (0 degrees) would be enough.On active speaker hiss at what axis you want it measured?
Yes, please. Just the direct sound (0 degrees) would be enough.On active speaker hiss at what axis you want it measured?
Idk if anyone asked this yet, but would it be worth sometimes measuring both speakers of a pair separately to see what speaker to speaker production variances might be found, and if those differences may be audible?
My guess is the LSR305 mkII is going to be first. So he can compare with Harman as a check he is getting good results.
Why do you think this is only for single speakers?as I presume this is not taken into account by the Klippel system as it's primarily for measuring single speakers?
I'll sell you my M2 system for less than that.
Why do you think this is only for single speakers?
The NFS is a tool meant to determine the pressure and particle velocity from the sound source with a high degree of spatial resolution and do this expediently. The groups most desperately in need of such information are not the designers of conventional speakers who have worked with less pressure information, but the designers of arrayed speakers, line arrays and soundbars, where there are multiple wavefronts that are summed to achieve the desired spectral response and spatial coverage.
IsoAcoustics have lab tests showing they are effective with a Focal floorstanding speaker.They work on a dynamic basis so testing them with this system is not straightforward. For now, when I have heard it at shows, the "improvement" is due to changing the height of the speaker, something the measurements definitely show.
We had discussed this a while back in some thread. The question is the audible improvement. As I commented, at shows the difference is dramatic but that is because the height of the speaker changes.IsoAcoustics have lab tests showing they are effective with a Focal floorstanding speaker.
I had searched and not found a proper one either. I am re-running the tests right now at higher resolution with more averaging. It is taking 2 hours now but is working on its own and other than tipping it, it has no other cost.As far as I know there's no good data for the LSR 305 MkII (a.k.a 305P). Only for the original LSR305. (I'd love to be proven wrong.)
I just meant the Klippel set-up looks like it can only measure one speaker at a time, not two at once, typically spaced as in an average listening environment. Unless this is incorrect?
haha. I just don't listen as much as I used to as I'm never homeWhy do you want to sell them? Got a deal on some Wilsons?
Speaking only for myself, some notion of the significance of the measurements (e.g., how they relate to audible qualities of a loudspeaker, especially if they're surrogates for things that are difficult or impossible to measure directly) would be greatly appreciated.I had searched and not found a proper one either. I am re-running the tests right now at higher resolution with more averaging. It is taking 2 hours now but is working on its own and other than tipping it, it has no other cost.
I plan to post the 305 as the first set of measurements. I am debating if I should post it as such, or first write a tutorial using it on what the measurements mean.
This !or first write a tutorial using it on what the measurements mean.
CEA-2034 calls for 10 degrees. The measurement is at far higher resolution and accounts for spatial aliasing.Amir, do you have any expectations on how much angular resolution you need?
If you ever wondered about Stereophile’s measurements:This !
CEA-2034 calls for 10 degrees. The measurement is at far higher resolution and accounts for spatial aliasing.