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Old 26th March 2013, 11:43 AM   #3221
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Quote:
Originally Posted by tb46 View Post
How does one get from diaphragm velocity to throat velocity?
Hi Oliver,

The throat velocity chart has been replaced by the diaphragm velocity chart. The Sample tool can still be used with the SPL response chart to calculate the horn throat peak particle velocity at specified frequencies, if so required.

When resonances are unmasked and a throat chamber is present, it is not possible to directly calculate the throat velocity from the diaphragm velocity.

Kind regards,

David
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Old 26th March 2013, 11:50 AM   #3222
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Hi Mark,

Quote:
Originally Posted by mwmkravchenko View Post
If we all ask for filters do we get it?
No way :-).

Quote:
Originally Posted by mwmkravchenko View Post
But the floodgates could open for types of filters.
Exactly!

Kind regards,

David
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Old 26th March 2013, 11:53 AM   #3223
Mark Kravchenko --- www.kravchenko-audio.com
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I feel like the kid who hopes that by asking a million times he will get his wish!

( I have two boys that are now young men, it never worked on me either!)
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Old 26th March 2013, 12:01 PM   #3224
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Originally Posted by mwmkravchenko View Post
I feel like the kid who hopes that by asking a million times he will get his wish!
"Insanity - doing the same thing over and over again and expecting different results."

Albert Einstein

:-).
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Old 26th March 2013, 01:11 PM   #3225
Mark Kravchenko --- www.kravchenko-audio.com
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I just told my kids they would be sorry....

Very sorry!

In my case the math involved to get the job done would be just a little exercise in dusting off the cobwebs.

More like require a petrol powered sweeper!
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Old 26th March 2013, 03:27 PM   #3226
more10 is offline more10  Sweden
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I can see two real benefits for adding filters. First is impact on diaphragm displacement. Second is to get impulse response without high frequency components. I will not ask you to add it to the wish list though :-)
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Old 26th March 2013, 10:54 PM   #3227
AllenB is offline AllenB  Australia
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Originally Posted by David McBean View Post
Hi AllenB,
Yes, said zero degree...meant zero dB . I've since built a pair.
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Old 26th March 2013, 11:32 PM   #3228
NEO Dan is offline NEO Dan  United States
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Originally Posted by AllenB View Post
Yes, said zero degree...meant zero dB . I've since built a pair.
Are you going to measure them?
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Old 26th March 2013, 11:44 PM   #3229
tb46 is offline tb46  United States
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Default Post #3221

Hi David,

I found the throat peak particle velocity an important parameter, and it's good to know that it is still maintained in the SPL/sample.

Regards,
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Old 27th March 2013, 07:07 AM   #3230
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Quote:
Originally Posted by mwmkravchenko View Post
I just told my kids they would be sorry....

Very sorry!

In my case the math involved to get the job done would be just a little exercise in dusting off the cobwebs.

More like require a petrol powered sweeper!
:-).
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