Air Velocity


Silver Member
Username: Alexv305

Tavernier, FL USA

Post Number: 410
Registered: Oct-05
Yea well if your real good, youll kno this..

How do you determine the amound of "air velocity" needed in a port to achieve MAXIMUM SPL out of any sub?

And NO GENERAL Rules like 12 sq per cf or 15 sq per cf because that doesnt work with all subs..

This is a real thinker..

Silver Member
Username: Mr_kebo

Albertville, Al USA

Post Number: 460
Registered: Nov-04
This would be nice to know.

Gold Member
Username: Basshead86

Google is your Friend, FL

Post Number: 5836
Registered: Aug-05
test it out....none of us have a Bachelors in aeroscience. lol

Silver Member
Username: Riskyb

Post Number: 164
Registered: Feb-06
Im no genius but, wouldnt the air velocity be changed according to the note? If a subwoofer played a low sound like 32 hz it would move more air than if it played 100 hz. Moving more air would mean a greater 'air velocity'. So isn't this the same as a box's fs? I don't know the formula off the top of my head but i'm sure its all over the internet.

Is this a question or just you trying to riddle the forum?

Silver Member
Username: Riskyb

Post Number: 167
Registered: Feb-06
I remembered that I think I heard once that the loudest point for a box is 3-5dbs over the fs.
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