 Rank: HIFI Guru Joined: 27/02/2009(UTC) Posts: 318 Location: Bristol
Thanks: 7 times Was thanked: 3 time(s) in 3 post(s)
|
|
|
|
|
 Rank: Moderator Joined: 15/07/2008(UTC) Posts: 3,054
Was thanked: 48 time(s) in 47 post(s)
|
I wonder what the absorption frequency range is ?
|
|
|
|
 Rank: HIFI Guru Joined: 04/08/2011(UTC) Posts: 283  Was thanked: 1 time(s) in 1 post(s)
|
|
|
|
|
 Rank: HIFI Guru Joined: 27/02/2009(UTC) Posts: 318 Location: Bristol
Thanks: 7 times Was thanked: 3 time(s) in 3 post(s)
|
Thanks for finding that. Will give it a proper read but did see that the conclusion shows it works from 620Hz up, equivalent to a 0.5m exponential tube.
|
|
|
|
 Rank: HIFI Guru Joined: 27/02/2009(UTC) Posts: 318 Location: Bristol
Thanks: 7 times Was thanked: 3 time(s) in 3 post(s)
|
|
|
|
|
 Rank: Moderator Joined: 15/07/2008(UTC) Posts: 3,054
Was thanked: 48 time(s) in 47 post(s)
|
Technology report in preparation for the coming issue Sept - Dec 2020 Better than 99% absorption in the working frequency range!
Martin Colloms
|
|
|
|
 Rank: Administrator Joined: 19/09/2008(UTC) Posts: 2,335  Location: UK Thanks: 37 times Was thanked: 10 time(s) in 9 post(s)
|
Originally Posted by: Martin Colloms  Technology report in preparation for the coming issue Sept - Dec 2020 Better than 99% absorption in the working frequency range!
Martin Colloms Wonder if the material will be available for those interested in fitment?
|
|
|
|
 Rank: HIFI Guru Joined: 27/02/2009(UTC) Posts: 318 Location: Bristol
Thanks: 7 times Was thanked: 3 time(s) in 3 post(s)
|
Having read the white paper and listened to the Darko podcast with the Kef R&D head, there was clearly a lot of customisation required to the tweeter to make it work. Unfortunately it is not just something that you can throw in the back of a speaker for miracle results, it has to be carefully integrated with the drivers. Old methods still apply to the diy crowd.
|
|
|
|
 Rank: Administrator Joined: 19/09/2008(UTC) Posts: 2,335  Location: UK Thanks: 37 times Was thanked: 10 time(s) in 9 post(s)
|
Originally Posted by: en1omb  Having read the white paper and listened to the Darko podcast with the Kef R&D head, there was clearly a lot of customisation required to the tweeter to make it work. Unfortunately it is not just something that you can throw in the back of a speaker for miracle results, it has to be carefully integrated with the drivers. Old methods still apply to the diy crowd. Indeed, not something I would be interested in using personally at this stage, but wonder if trickle down tech will be available for those who are interested?
The engineering needed to incorporate the tech properly is a little beyond mere DIY at the present time, but I remain interested from an academic research and subjective sound quality impact point of view. Edited by user 02 October 2020 09:18:07(UTC)
| Reason: Not specified
|
|
|
|
 Rank: Administrator Joined: 19/09/2008(UTC) Posts: 2,335  Location: UK Thanks: 37 times Was thanked: 10 time(s) in 9 post(s)
|
For those interested here is a link to the paper, note the reference to the original KEF Carlton and the dome type 6432 midrange driver from 1967. This is a loudspeaker I still use and reviewed, published in HiFi Critic magazine July-Sept 2016
https://www.aes.org/tmpF.../elib/20201002/20758.pdf
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.