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KEF Q Meta is Coming

perhap the meta witch is plastic / 'tire ' black think on the back need a little time to break in

the Q speeker is mobile , need a little time , time who reviewer dont have

it will not change from white to black but win a little think more than ordinary speeker
 
Break in might just as well make them worse. If the effect is there in the first place.
 
AncientMariner said:
It's inaudible because of the narrow bandwidth:
Click to expand...

If they were just narrowband dips, I'd agree with you. But they're not just that. There's more going on. There's a broad hump in the on axis response in that region due to cabinet dimensions. That broad hump is then interrupted by two the narrow dips. Those narrow dips are just on-axis. Off-axis, they're actually narrow peaks. Those peaks radiate to the back of the speaker, and, to a lesser extent, to the sides, top, and bottom. How audible they'll be depends on room (how reflective wall is behind and to the sides of speakers), and of course on program material (will need material that excites that narrow band).
 
billou5767 said:
perhap the meta witch is plastic / 'tire ' black think on the back need a little time to break in
Click to expand...
I'm not sure whether you're joking, or just have no clue how it works. It has no moving parts, just the air inside its folded pipes. There is nothing to break in.
 
Beave said:
If they were just narrowband dips, I'd agree with you. But they're not just that. There's more going on. There's a broad hump in the on axis response in that region due to cabinet dimensions. That broad hump is then interrupted by two the narrow dips. Those narrow dips are just on-axis. Off-axis, they're actually narrow peaks. Those peaks radiate to the back of the speaker, and, to a lesser extent, to the sides, top, and bottom. How audible they'll be depends on room (how reflective wall is behind and to the sides of speakers), and of course on program material (will need material that excites that narrow band).
Click to expand...
Here is a fun experiment to make. Use a free plugin like TDR Nova and play around with different bandwidths and gains. Then see what you can reliably hear and tell apart. Of course, this requires a high degree of self-honesty and openness - or get another person to play around and you tell when you can hear a difference.


Screenshot 2024-10-18 at 14.44.35.jpg

Warning: This has the potential to make you very disillusioned.

On the other hand, it also has a lot of educational value if you try to quantify what you hear and what might cause it. Our brain is an amazing audio processor. Which is no wonder when it has to make sense of stuff like this:

Screenshot 2024-10-18 at 14.57.11.jpg
 
AncientMariner said:
Here is a fun experiment to make. Use a free plugin like TDR Nova and play around with different bandwidths and gains. Then see what you can reliably hear and tell apart. Of course, this requires a high degree of self-honesty and openness - or get another person to play around and you tell when you can hear a difference.

Warning: This has the potential to make you very disillusioned.

On the other hand, it also has a lot of educational value if you try to quantify what you hear and what might cause it. Our brain is an amazing audio processor. Which is no wonder when it has to make sense of stuff like this:
Click to expand...

Are you suggesting that a narrow dip created by EQ is equivalent to the port resonances in the Q3meta? As I explained above, there is much more going on than just a narrow, on-axis dip or two.
 
Beave said:
Are you suggesting that a narrow dip created by EQ is equivalent to the port resonances in the Q3meta?
Click to expand...
The EQ is just a fun experiment to do in general. You can experiment with different frequencies, bandwidth and gains, and figure out what makes the largest difference.
The screenshot of TDR Nova was not meant to represent anything in specific. It's up to you to figure out what is important for your ears or not.


Beave said:
As I explained above, there is much more going on than just a narrow, on-axis dip or two.
Click to expand...
I already addressed that. Quite in depth reply in this thread already. Including with a video of Floyd Toole explaining resonances and how easily they can be corrected:
www.audiosciencereview.com

KEF Q Meta is Coming

Reviewer says: neutral, voices sound natural, deep and clean bass. Good overall but no comparisons given with, say, other speakers of this price range or R3 Meta etc. According to the measurements (as I read them): low sensitivity, low distortions, directivity well controlled, higher...
www.audiosciencereview.com www.audiosciencereview.com

You can fix all that because the speaker has excellent directivity. It should be the most important thing to look at with speaker measurements, since frequency response can be fixed if the directivity is good. For the Q350, if you do that, you're left with a tiny dip at 950Hz.
 
somebodyelse said:
I'm not sure whether you're joking, or just have no clue how it works. It has no moving parts, just the air inside its folded pipes. There is nothing to break in.
Click to expand...
you have cut the 'meta disk ' think' ?

i think its not solid , its like 'tire' to absob and direct wave

there is wave , compression , magnet temperature , vibration

its just a hypothése

andddddddddddd

you talk pipe / labyrinth : wave and air : that why perhars the spearker protection is no more an option : dust
 
billou5767 said:
you have cut the 'meta disk ' think' ?

i think its not solid , its like 'tire' to absob and direct wave

there is wave , compression , magnet temperature , vibration

its just a hypothése

andddddddddddd

you talk pipe / labyrinth : wave and air : that why perhars the spearker protection is no more an option : dust
Click to expand...
KEF showed the internal structure and explained the operation. See for example:
https://assets.kef.com/pdf_doc/LS50Meta/KEF-LS50Meta-LS50WirelessII-WhitePaper.pdf
 
somebodyelse said:
???
Click to expand...
joke :

The design of the absorber was a joint project between KEF and AMG (Acoustic Metamaterials Group). With the help of Professor Ping Sheng (a worldrenowned expert on metamaterials),

1] M. Yang, S. Chen, C. Fu and P. Sheng, “Optimal sound-absorbing structures,” Mater. Horiz., vol. 4, pp.673-680, 2017


[email protected]​


Unit C, 9/F Winning House, No.72-76 Wing Lok Street, Sheung Wan, Hong Kong​

 
amarsicola said:
Erin just posted the spinorama in a video on Patreon. Spoiler: we have the champion bookshelf speaker for value...
Click to expand...
You mean for q concerto?
 
concerto is new , kef must have do a lot of time to do it , the time no pass on q350 :p
 
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