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<blockquote data-quote="japjrthib" data-source="post: 8483320" data-attributes="member: 669239">Guys,Looking for a little help designing a box for 3 sundown sa-12&#039;s. The specs call for 2 cubic feet per sub at 35 htz. Some say go lower on the tuning.... Input on this please? I listen to mostly hip hop/rap and I want these things pounding and low, making the hair on my head dance!The stipulations I have is the box can be no longer than 49&quot; wide and 18&quot; tall. The depth doesn&#039;t matter.... Also they need to be all in separate chambers as I&#039;m running 3 separate amps (3 JL 500/1&#039;s). I would prefer the ports be across the bottom of the box under the subs if possible with these size stipulations. The box will be for an 04 Avalanche. So once I have the box built I&#039;m gonna be attaching it to a fabricated mid gate (just a piece of 3/4 mdf cut to make a wall and fill in the opening for the original Midgate). So the actual front board of the box will be that 3/4 mdf cut into a wall for the custom Midgate. This link will give a better idea of what I&#039;m saying --<a href="http://carjamz.com/zen/index.php?main_page=product_info&amp;amp;cPath=612_150_151_183&amp;amp;products_id=4519&amp;amp;zenid=94357a8cbc5852e28103472288f5ab5d" target="_blank">02-2009 Chevy Avalanche or Cadillac EXT. Jumbo Sub Box [AVAJUMBOPOLY] - $484.49 : CarJamz.com, Inc., Car Audio, Stereo, HID Conversion, Custom Boxes, Chrome Trim, Rims, Kinetik</a>I currently have them in a box I built but I didn&#039;t go off of the specs; it was just a box for a 12 I already had and replicated it to make 2 more chambers. I know I&#039;m not getting the full potential out of these subs with the box they&#039;re in.Any help is appreciated.</blockquote>

[QUOTE="japjrthib, post: 8483320, member: 669239"] Guys, Looking for a little help designing a box for 3 sundown sa-12's. The specs call for 2 cubic feet per sub at 35 htz. Some say go lower on the tuning.... Input on this please? I listen to mostly hip hop/rap and I want these things pounding and low, making the hair on my head dance! The stipulations I have is the box can be no longer than 49" wide and 18" tall. The depth doesn't matter.... Also they need to be all in separate chambers as I'm running 3 separate amps (3 JL 500/1's). I would prefer the ports be across the bottom of the box under the subs if possible with these size stipulations. The box will be for an 04 Avalanche. So once I have the box built I'm gonna be attaching it to a fabricated mid gate (just a piece of 3/4 mdf cut to make a wall and fill in the opening for the original Midgate). So the actual front board of the box will be that 3/4 mdf cut into a wall for the custom Midgate. This link will give a better idea of what I'm saying -- [URL="http://carjamz.com/zen/index.php?main_page=product_info&cPath=612_150_151_183&products_id=4519&zenid=94357a8cbc5852e28103472288f5ab5d"]02-2009 Chevy Avalanche or Cadillac EXT. Jumbo Sub Box [AVAJUMBOPOLY] - $484.49 : CarJamz.com, Inc., Car Audio, Stereo, HID Conversion, Custom Boxes, Chrome Trim, Rims, Kinetik[/URL] I currently have them in a box I built but I didn't go off of the specs; it was just a box for a 12 I already had and replicated it to make 2 more chambers. I know I'm not getting the full potential out of these subs with the box they're in. Any help is appreciated. [/QUOTE]

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