port noise minimise

[rabbitz]

Yury

The B&W port is serious but the cigarettes are a joke and apply only to the person smoking them........ not the port.

 

[Artmaster]

one more thing.
I've use very powerful driver. 10" only, but i never see the same.
should I use another one - problem disappear.

 

[Artmaster]

Yury

The B&W port is serious but the cigarettes are a joke and apply only to the person smoking them........ not the port.

nice to know it
it's ok.
I tried use exponential type. belive me - noise been almost the same like simple port.
so pressure and port diam - I need change. but I wont.
now, it's almost ok, but next sub I'll plane bigger.

 

[jwatts]

Just A Thought

The laminar flow of air through a port can be modeled by using the Navier Stokes equation from hydrodynamics. You can make modifications of different parameters and see when the flow becomes turbulent and nonlinear. I have been meaning to develop a worksheet to do this I just haven’t got around to it yet.

 

[Artmaster]

yes, it is.
so, I have to make port bigger , or sound pressure less......
or box capacity bigger...
in any case I break idea and design
i caaaaaaaaaaaaaaaaaaaaan't

 

[Collo]

Yuri,
thanks for your comments on my site, and thanks for posting the pictures of the trade show. You seem to have access to some of the same brands as we do do.

Your "marble finish" subwoofers look interesting.

PS We have been getting good coverage of the current crisis in Ukraine. I hope it is resolved peacefully and soon, so you can get back to your speakers....

 

[Artmaster]

thank you Collo!
I hope it's have to finish ASAP, but result wont be good.
that's because I don't like the both candidates.
they are criminal.
pity, but it's my problem of course.
only God knows, when I'll be able to do my favor loudspeaker again.
good luck friends.