inm Posted August 17, 2011 Report Share Posted August 17, 2011 I've read that I should have at least 12 in2 per ft. Is 19 too much? I've been playing around with ideas for a new box. If it matters: 2 15" Lvl3, 9.95ft3 gross volume. On 2/28/2013 at 2:52 PM, Chaise said: "Now spread your butt cheeks so I can zap your asshole." 2008 Subaru Forester XT Link to comment Share on other sites More sharing options...
dkahns51 Posted August 17, 2011 Report Share Posted August 17, 2011 I've read that I should have at least 12 in2 per ft. Is 19 too much? I've been playing around with ideas for a new box. If it matters: 2 15" Lvl3, 9.95ft3 gross volume. It should be 16-19 Port area per foot, That is what ive always been told.. so yeah your good. 9cubic for 2 15's seems like a big box? Mines 6.5 for 2 15's and its doing me great. **Clicky>>My 2009 Subaru Impreza Outback Sport Buildlog<<Clicky** I'm messing up 98% of the time Link to comment Share on other sites More sharing options...
inm Posted August 17, 2011 Author Report Share Posted August 17, 2011 I've read that I should have at least 12 in2 per ft. Is 19 too much? I've been playing around with ideas for a new box. If it matters: 2 15" Lvl3, 9.95ft3 gross volume. It should be 16-19 Port area per foot, That is what ive always been told.. so yeah your good. 9cubic for 2 15's seems like a big box? Mines 6.5 for 2 15's and its doing me great. Well, DC calls for 3cubes per sub, and I thought that was after port displacement. Or is it before port displacement? On 2/28/2013 at 2:52 PM, Chaise said: "Now spread your butt cheeks so I can zap your asshole." 2008 Subaru Forester XT Link to comment Share on other sites More sharing options...
727Designs Posted August 17, 2011 Report Share Posted August 17, 2011 Exact amount will vary depending on the sub/enclosure/vehicle/etc. Best bet is to get a program like BBP6 to design and then plot it and check port velocity. 12-19in^2 is usually just a good estimate on what will work out. Take BBP6, enter the t/s parameters, design it up, and check the graphs. It will also tell you some other valuable information like the F3 point, and show you the response across a range of frequency. -Zach-2010 Toyota TundraFull Hybrid Audio SQ 7" BDS on 37's 2000 Ford Expedition 160+ dB Green Turd -SOLD- Link to comment Share on other sites More sharing options...
727Designs Posted August 17, 2011 Report Share Posted August 17, 2011 I've read that I should have at least 12 in2 per ft. Is 19 too much? I've been playing around with ideas for a new box. If it matters: 2 15" Lvl3, 9.95ft3 gross volume. It should be 16-19 Port area per foot, That is what ive always been told.. so yeah your good. 9cubic for 2 15's seems like a big box? Mines 6.5 for 2 15's and its doing me great. He's 9.95 gross, not net. -Zach-2010 Toyota TundraFull Hybrid Audio SQ 7" BDS on 37's 2000 Ford Expedition 160+ dB Green Turd -SOLD- Link to comment Share on other sites More sharing options...
inm Posted August 17, 2011 Author Report Share Posted August 17, 2011 Exact amount will vary depending on the sub/enclosure/vehicle/etc. Best bet is to get a program like BBP6 to design and then plot it and check port velocity. 12-19in^2 is usually just a good estimate on what will work out. Take BBP6, enter the t/s parameters, design it up, and check the graphs. It will also tell you some other valuable information like the F3 point, and show you the response across a range of frequency. Where can I get BBP6? Edit- Ahh, BB6P is what you meant. I found it. On 2/28/2013 at 2:52 PM, Chaise said: "Now spread your butt cheeks so I can zap your asshole." 2008 Subaru Forester XT Link to comment Share on other sites More sharing options...
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