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» Termpro Audio Forum » Installer's Corner » SPL » Hi Guys, MY First Question !

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Author Topic: Hi Guys, MY First Question !
Blinkybill
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A big hello there from use guys over here in England !

I have been following this forum fior a while now and thought i would final join [Big Grin]


Right, well here is the question !


I am hoping to compete in a few SPL compotitions, and now the basics, but i was wondering if there was a maximum port area for a 12" sub ? i was thinking of using a 5 cuft box with 70sq" of port area, is this to big for a street A set up ?

And is that box size to big for a single 12" ?

The sub is a Rockford Fosgate 3412.


Thanks for any help you guys give me.


[Wink] Blinky

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Posts: 44 | From: London England | Registered: Jun 2003  |  IP: Logged | Report this post to a Moderator
cavi_in_kc
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I'd love to help you but I know nothing about that sub. But anyways Welcome to Termpro and enjoy your stay. [Cool]

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Blinkybill
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Thanks you every much mate, no probs i can under stand that.


http://www.rockfordfosgate.com/subwoofers/ it is the 23rd one down [Smile]


cheers

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Posts: 44 | From: London England | Registered: Jun 2003  |  IP: Logged | Report this post to a Moderator
JeremyD
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You can safely use as much port area as you have cone area. Depending on the woofer, box size, tuning, etc, you can get away with LOTS more, but you need to do a ton of testing.

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The new SPLBassX.Com forum is up!!!
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Escandaloso
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i thing in the box, keeps under the size is permited, you donīt have restrictions. Rules only talk about area of woofers and certain limits of the high of the box(below the window. at least the rules from Iasca, Usaci and Db dRag in Mexico.
Posts: 56 | From: MEXICO | Registered: Jun 2003  |  IP: Logged | Report this post to a Moderator
Blinkybill
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Thanks very much guys, i just played around on BBP and it looks alright, peaky !


Thanks very much, and cheers for the welcome.


[Wink] Blinky

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Posts: 44 | From: London England | Registered: Jun 2003  |  IP: Logged | Report this post to a Moderator
   

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