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-   -   Ported box too large? (https://www.caraudioforumz.com/enclosure-design-construction-help-37/ported-box-too-large-24929/)

DaveyBoy2002 02-26-2007 04:29 PM

Ported box too large?
 
I bought two TS-W1207D2 Pioneer Premier 12" Champion Series Subwoofers and I started doing some calculations on the box I have rightnow and it would seem the box is too large specs of the subs are as follows

TS-W1207D2
Premier 12" Champion Series Subwoofer with 1200 Watts Max.

IMPP with Aramid Fiber Cone
Integrated Single Sided Silver Binding Posts
Recommended Enclosure: 0.85 to 1.75 Cubic Feet


the entire box is 4.7 (rounded up from 4.68....) so 4.7 /2 (there's a divider in there) is 2.35. so each sub has 2.35 cubic feet and as stated above the subs need .85 - 1.75 cubic feet. what are my solutions for this problem? without cutting the box preferrably. Thanks

df.dima 02-26-2007 05:06 PM

If ya wish to decrease the volume, drop some bricks inside. Secure them of course :).

DaveyBoy2002 02-26-2007 05:09 PM

lol ACTUAL bricks or a brick of rubber or something?

Killer_klown187 02-26-2007 05:09 PM

I found a Phone book works rather well :P haha, Or Citrates way is to drop a case of pop in the box!!! IT worked for him :D

DaveyBoy2002 02-26-2007 05:12 PM

LMAO guess thats a place to store pop when I get caffeen withdrawls just rip apart the box and let the pop sit for awhile and I'm good? :appl:

DaveyBoy2002 02-26-2007 05:29 PM

new subject WTB: 2 edmonton or equivalent phone books for sub box since my area's phone book is only 1inch thick, lol jk

Jboy2 02-26-2007 09:26 PM

Did you include port displacement and sub displacement aswell? I also find that its ok to give alittle headroom for airspace in the box(ie: Type r's recommend 1.75 cubic feet, but people build boxes 2-3 cubes because there is greater output.), so you should be good.

Audiophile72 02-27-2007 09:58 AM

The maximum volume you want to go with for that sub is 2.05 cubes in a ported enclosure. As suggested, you can pile in some bricks or extra lumber (4x4, 2x4) to take up some of the extra volume.

Killer_klown187 02-27-2007 10:47 AM

Or brace the crap outta it, then it serves dual purpose :D No flex, and takes up displacement!!

MTA 02-27-2007 12:01 PM

actually 2.35 is not bad for a 12" sub

specially if you want SPL..even SQ it will be fine..as you are tryinh to increase the lowest octave of teh sound spectrum

the larger the box..the more output at lower frequency... depends on box tuning


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