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New KEF speaker?

dogmamann

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Only the LS60 series has the ugly mate color, the R series have the NICE shiny finish
Beauty / ugliness a subjective thing. To me Matt doesn’t attract finger prints, doesn’t scratch easily, doesn’t reflect the tv like a mirror.

Also, both looks beautiful to my eyes. Writing “NICE” in bold letters won’t make it NICE for everyone.
 

Vacceo

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I don´t think KEF will add the metamaterial to the Q series for the same reason the didn´t on the LSX II: keep the price relatively low.

My personal guess is that it may be an LS50 with a larger midwoofer, perhaps a 6 inch.

If you ask me about what I´d like; a 10 or 12 inch uni core subwoofer. :D I wouldn´t mind a further expansion on their active line, adding further posibilities such as room eq and multichannel.
 

thewas

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My personal guess is that it may be an LS50 with a larger midwoofer, perhaps a 6 inch.
The photo doesn't show a KEF midwoofer but a dedicated mid coaxial KEF driver with very narrow surround and thus limited displacement.
 

dualazmak

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I do hope I will be able to see and hear KEF's new SP system with new SP driver(s) at the coming Tokyo International Audio Show to be held on November 3 through 5; I could pre-register for all of the three days.
 

Vacceo

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The photo doesn't show a KEF midwoofer but a dedicated mid coaxial KEF driver with very narrow surround and thus limited displacement.
Yeah, I know it´s a coaxial. But the mid may be larger. Honestly, I don´t mind much as the LS50 WII I have been using for more than a year, from a couple meters away in the living room, has plently output and enough frequency extension to not miss anything.

With an LS60, the mid coaxial is even smaller and probably I´d give you the same veredict on both areas (SPL and frequency extension), so if active is the name of the game, it is possible to push it further than passive.
 

thewas

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Yeah, I know it´s a coaxial. But the mid may be larger. Honestly, I don´t mind much as the LS50 WII I have been using for more than a year, from a couple meters away in the living room, has plently output and enough frequency extension to not miss anything.

With an LS60, the mid coaxial is even smaller and probably I´d give you the same veredict on both areas (SPL and frequency extension), so if active is the name of the game, it is possible to push it further than passive.
A mid can be larger or smaller but the driver surround in any case has to be bigger for a 2-way speaker, so that photo definitely shows a 3-way design.
 

DSJR

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I wonder if that tweeter will still have the godawful resonance over 25kHz that other current Uni-Q's seem to have? We may not be able to hear it, but I'm wondering more and more if its effects can be heard lower down, especially with so called 'hi-res' sources with lots of noise (shaping) going on...
 

Vacceo

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I wonder if that tweeter will still have the godawful resonance over 25kHz that other current Uni-Q's seem to have? We may not be able to hear it, but I'm wondering more and more if its effects can be heard lower down, especially with so called 'hi-res' sources with lots of noise (shaping) going on...
Does it really matter at those frequencies? I mean, only babies will reach 20kHz, so even there it shouldn´t be audible.
 

Opal

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I wonder if that tweeter will still have the godawful resonance over 25kHz that other current Uni-Q's seem to have? We may not be able to hear it, but I'm wondering more and more if its effects can be heard lower down, especially with so called 'hi-res' sources with lots of noise (shaping) going on...
If you cant hear it why is it a problem?
 
D

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Does it really matter at those frequencies? I mean, only babies will reach 20kHz, so even there it shouldn´t be audible.
If you cant hear it why is it a problem?

Perhaps @DSJR is referring to something called "subharmonics"?



Jim
 

DSJR

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I couldn't always hear the 15kHz line whistle our old 625 line PAL TV's gave out, but sometimes I could really feel it and it hurt!

I agree the 30kHz or whatever peak is totally inaudible in itself, but noise up at those frequencies could set it off and as @Jim Taylor suggests above, I was wondering what if any effect these rather large resonances may have.

It may well be nothing at all, but I'm still curious as the better ring radiator tweeters go out this far, but without the resonances I believe...
 

thewas

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Typical hard dome tweeters all show break up at some frequency, with combinations of stiff but light materials this first break up mode is brought up to 30 or even more kHz where it has no audibility effects.

It may well be nothing at all, but I'm still curious as the better ring radiator tweeters go out this far, but without the resonances I believe...
Dome tweeters that don't show such (usually softer and damped materials) just have it at a lower frequency and spread over a wider range due to their damping and have other disadvantages.
 

Vacceo

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I couldn't always hear the 15kHz line whistle our old 625 line PAL TV's gave out, but sometimes I could really feel it and it hurt!

I agree the 30kHz or whatever peak is totally inaudible in itself, but noise up at those frequencies could set it off and as @Jim Taylor suggests above, I was wondering what if any effect these rather large resonances may have.

It may well be nothing at all, but I'm still curious as the better ring radiator tweeters go out this far, but without the resonances I believe...
Good engineering is good engineering. And that care is a good sign. On that, I can agree.
 

sigbergaudio

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Perhaps @DSJR is referring to something called "subharmonics"?



Jim

There is no such thing in this context. A mechanically / naturally produced sound does not induce undertones / subharmonics.
 
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