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HalAir Aeralis - Fullrange Line Array (Vifa TC9-18-08)
HalAir Aeralis - Fullrange Line Array (Vifa TC9-18-08)
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Old 22nd November 2019, 03:13 PM   #121
TNT is online now TNT  Sweden
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Yes. But is there enough of radius?

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Old 22nd November 2019, 08:17 PM   #122
haraldo is offline haraldo  Norway
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When is your speakers ready for auditioning?
I am in Oslo area twice per week and Sandefjord is not that far away

Do you want constructive input?
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Old 23rd November 2019, 12:15 AM   #123
Halair is offline Halair  Norway
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Quote:
Originally Posted by haraldo View Post
When is your speakers ready for auditioning?
I am in Oslo area twice per week and Sandefjord is not that far away

Do you want constructive input?
Tidlig 2020
Constructive input is welcome any time !
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Old 23rd November 2019, 12:24 AM   #124
Halair is offline Halair  Norway
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First half of the first line is playing

Curiosity got the better of me, I had to hear how the cabinet behaved...

Ear against side wall on mk1, its like listening in on a dorm party through a really thin door.
Ear against side wall on mk2, its like listening for a party you know is close by, but cant really locate where.

The rear EG-wall is marginal, too thin & flat but I have room to mitigate that

The difference between mk1 and mk2 is massive, as it should be considering the massive difference between the two...

Okay...so now I have 1/4 of the system running, only 3/4 to go

Last edited by Halair; 23rd November 2019 at 12:38 AM.
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Old 23rd November 2019, 09:18 AM   #125
haraldo is offline haraldo  Norway
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Looks great

Is there a better way to decouple the drivers?

Listening to Andrew Jones’s research stating that by far the largest amount of vibrations into the cabinet comes from mechanical transmission from the driver chassis. Guys like Audio Physic claim to put all this effort into driver decoupling, but I never understood exactly what they are doing....
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Old 23rd November 2019, 12:34 PM   #126
wesayso is online now wesayso  Netherlands
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Sounds like you're well underway towards a great improvement! That must be rewarding!
I bet it will be noticable. All little details count in the long run.
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Old 23rd November 2019, 01:59 PM   #127
TNT is online now TNT  Sweden
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Yes, the big one: Soft decoupling to cabinet or stiff. Depends of course on cabinet. Maybe driver basket etc? More?

I never seen a discussion and a model, comparing the two extremes. Would be interesting. Followed up by measurements...

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Old 23rd November 2019, 06:08 PM   #128
planet10 is offline planet10  Canada
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HalAir Aeralis - Fullrange Line Array (Vifa TC9-18-08)
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...Ear against side wall...
This is where a mechanics stethescope can be invaluable.

dave
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Old 23rd November 2019, 06:12 PM   #129
planet10 is offline planet10  Canada
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HalAir Aeralis - Fullrange Line Array (Vifa TC9-18-08)
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Originally Posted by haraldo View Post
Listening to Andrew Jonesís research stating that by far the largest amount of vibrations into the cabinet comes from mechanical transmission from the driver chassis.
It is easy to show that. But if you decouple the driver from the mass of the cabinet all of the reactive energy shows up as motion of the driver (as a whole) instead of the driver+the mass of the cabinet. This causes a decrease in DDR, the ability to reproduce small details, and the TC9 already has a significant deficit in this respect.

I have discounted this Jones technique every since we 1st saw it in the KEF 105 and quickly showed that it did not work.

dave
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Old 23rd November 2019, 06:41 PM   #130
wesayso is online now wesayso  Netherlands
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IThis causes a decrease in DDR, the ability to reproduce small details, and the TC9 already has a significant deficit in this respect.

dave
Oh please.... just because you put a speaker in a box and didn't like it....

I hope that one day you'll learn why you didn't like it.
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