Daddy_ Posted July 8, 2016 Report Share Posted July 8, 2016 With my external dimensions 35.5w 17h 18d with a gross volume of 5.03. Running off a sundown 1500d and maybe a 2000d and the box tuned to 32 hertz. After port area, bracing, and woofer displacement I am left with 3.88 net volume with 39sq in of port area. Is this enough for 2 12s or do I need more port area around 46.55Sq in?? Quote Car: 2012 Acura TL Elite Head Unit: JL Audio Fix86 Front Stage : Alpine SPX-17PRO Rear Stage : Alpine SPR-60C Component Amp : JL Audio HD 600/4 Sub : 1 12" JL Audio W7 Sub Amp : JL Audio HD 1200 Link to comment Share on other sites More sharing options...
Daddy_ Posted July 9, 2016 Author Report Share Posted July 9, 2016 Anyone? I'll make it more simple. 2 sundown sa 12s in 3.5 cubes net tuned to 34 hertz is 42-49 Sq in of port area enough Quote Car: 2012 Acura TL Elite Head Unit: JL Audio Fix86 Front Stage : Alpine SPX-17PRO Rear Stage : Alpine SPR-60C Component Amp : JL Audio HD 600/4 Sub : 1 12" JL Audio W7 Sub Amp : JL Audio HD 1200 Link to comment Share on other sites More sharing options...
Bayuk89 Posted July 11, 2016 Report Share Posted July 11, 2016 (edited) . Edited July 11, 2016 by Bayuk89 Quote Link to comment Share on other sites More sharing options...
Bayuk89 Posted July 11, 2016 Report Share Posted July 11, 2016 http://sundownaudio.com/index.php/subwoofers/sa-series Sundown says 1.5-2.0 net for the sa-12 If it was my build i would do 4 cubes net tuned to 32hz with 48" of port... i think the box will be fine up to 2000 watts RMS Quote Link to comment Share on other sites More sharing options...
ToNasty Posted July 11, 2016 Report Share Posted July 11, 2016 More port Quote ***Super Sellers List***http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers Link to comment Share on other sites More sharing options...
Bayuk89 Posted July 11, 2016 Report Share Posted July 11, 2016 More port You suggest 52" or more ? I heard the SA's dont need a ton of port, 48" @ 4 cubes is 12" per foot. Port velocity will be fine in those suggestions huh ? Quote Link to comment Share on other sites More sharing options...
Bayuk89 Posted July 12, 2016 Report Share Posted July 12, 2016 Daddy_ Idk if you got the answered you need, you havent responded back... I suggested 4 cubes net tuned to 32-34 with 48 sq inches of port will support 1500-2000 watts just fine. Too nasty suggested more port, but hasent give any numbers of how much I suggest you ask joeX or triticum they may give you a better answer if your not satisfied with my suggestion. Quote Link to comment Share on other sites More sharing options...
Daddy_ Posted July 12, 2016 Author Report Share Posted July 12, 2016 I can't fit 4 cubes net as my space is limited. I have it at 3.5 cubes net at 34 hertz with 46.5Sq in of port. So each sub has 1.75 Quote Car: 2012 Acura TL Elite Head Unit: JL Audio Fix86 Front Stage : Alpine SPX-17PRO Rear Stage : Alpine SPR-60C Component Amp : JL Audio HD 600/4 Sub : 1 12" JL Audio W7 Sub Amp : JL Audio HD 1200 Link to comment Share on other sites More sharing options...
Daddy_ Posted July 13, 2016 Author Report Share Posted July 13, 2016 Also I wanted to ask about the Sundown X 15. I know they need 4.25 cubes net but Could they run at 3.5 cubes net tuned to 32 hertz with about 46 sq in of port area? Quote Car: 2012 Acura TL Elite Head Unit: JL Audio Fix86 Front Stage : Alpine SPX-17PRO Rear Stage : Alpine SPR-60C Component Amp : JL Audio HD 600/4 Sub : 1 12" JL Audio W7 Sub Amp : JL Audio HD 1200 Link to comment Share on other sites More sharing options...
Bayuk89 Posted July 13, 2016 Report Share Posted July 13, 2016 Also I wanted to ask about the Sundown X 15. I know they need 4.25 cubes net but Could they run at 3.5 cubes net tuned to 32 hertz with about 46 sq in of port area? This one is out of my experience...... but on the 12's 3.5 net tuned to 34hz is good. You might wanna play with port area, 48-60" of port 46" IMO would be fine 1500-2000 watts..... i read on another post someone was asking joeX and he suggested around 60" of port.... might get more feed back if you post in the subwoofer section ... or search through other sa-12 posts, sa-12 is talked about ALOT on this forum, lots of builds. Quote Link to comment Share on other sites More sharing options...
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