Flapping Sound

 

Chad
Unregistered guest
I have spent about 2 weeks buying different subs and placing them in my sealed enclosure to find the perfect sound. Yes I built the box first, because of the unusual space. Every speaker I have placed into this box regardless if the recommended volume is 2.5 cubic feet, or 1 cubic feet has sounded terrible

It sounds decent at lower volume, but then when I turn it up it starts to make a flapping sounds, almost like the box has a big hole in it. I have no idea what is causing this problem anyone have any ideas? Thanks
 

New member
Username: Pat_l

Tucson, AZ USA

Post Number: 2
Registered: Apr-04
Even though the recommended box size is 2.5cuft, it sounds to me like the box is too big. There is to much space and not enough subwoofer to kick around the air and frequencies in the box. I dont know if i am wrong but i think i am on the right track. Somebody else will know.
 

Chad
Unregistered guest
Ya I kinda thought that too, Anyone else have any idea?
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 2257
Registered: Dec-03
sealed box? what's the volume per sub, and what size sub?
 

Chad
Unregistered guest
It's a sealed box, 2.3 cubic feet of air space for one 12. I have tried an mtx 6000, and a fosgate that I bought at best buy, and now I have an Orion XtrS dual voice coil.
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 2272
Registered: Dec-03
box is WAY too big
that's your problem.
that's even too big for one ported 12"
you need to rebuild that box to about 1cu foot for a sealed 12", after displacement.
 

Chad
Unregistered guest
How do you figure out the displacement of a sub?
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 2384
Registered: Dec-03
should be listed with the TS specs of the sub.
you can look it up on the maker's website I'm sure
 

chad
Unregistered guest
so what does 190^2 or 3.1 l mean for the speaker displacement?
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 2421
Registered: Dec-03
the displacement should be in liters, or cubic inches or cm^3.

 

chad
Unregistered guest
3.l liters it must be then, I made the box to your recommendations and it works great. Thanks for your help
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