Port Question

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gdog_mm

Member - Posts: 6

Joined: March 27, 2002

Location: Canada

Posted: May 04, 2003 at 12:08 AM / IP Logged

I havent been able to find the answer to my question anywhere. When porting a box, how does the size of the port related to SPL? LIke will a 4" port tuned at lets say 35HZ give you a higher spl reading that a 3" port tuned at 35HZ ?????

a Lil confused, please help,

or anyone know of a link that explains this please post.

thanks

Velocity Motors

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Joined: March 08, 2002

Location: Manitoba, Canada

Posted: May 04, 2003 at 9:57 PM / IP Logged

As long at the port tuning frequency is the same on both scenarios, the SPL will not be any higher. The only way to get a higher SPL is to give the sub more power at 35 hz's. The only reason for the port diameter difference is for boxes that can not support a longer 3" port so they go for a 4" shorter port. The prot length plays a part in the tuning frequency as well, kinda like a pipe organ. The taller the stacks the deeper the bass frequency.

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

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gdog_mm

Member - Posts: 6

Joined: March 27, 2002

Location: Canada

Posted: May 04, 2003 at 10:16 PM / IP Logged

thanks for the help

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Port Question

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