SupraStar 3000 Posted November 6, 2004 Share Posted November 6, 2004 F.A.O Mods: please delete this thread if absolutely necessary as its in the wrong section, but I'm after maximum coverage and a speedy answer a.s.a.p ------------------------ The problem: Started working out the sealed box volume for a Infinity Reference 1030w 10" sub and I'm now a little confused The diameter of the sub is 10" (254.0mm) so I'd guess going on past sub boxes i would expect the size to be around 25" cubed (thats 25"high x 25"deep x 25"wide) approximately. In the box i find a 'technical date' sheet! Great, this should confirm the box size but according to the data the sealed box volume (including driver displacement) should be 0.72 ft cubed (21.24 liters) ?????? ..... but thats around 9"sq and smaller than the sub diameter. way too small? Any ideas. Thanks, Ed Quote Link to comment Share on other sites More sharing options...
Matt B Posted November 7, 2004 Share Posted November 7, 2004 Hi Ed, I can see where your coming from but obviously the box does not have to be a cube. My 10" JL sub in in a box which is about .9 foot square. Can you not make it shallow but wide enough to fit the sub? Quote Link to comment Share on other sites More sharing options...
SupraStar 3000 Posted November 7, 2004 Author Share Posted November 7, 2004 Hi Matt, thanks for your reply. I did consider makeing the box different sizes on all sides but keeped the faces equal on the example to avoid confusion Matt Harwood has confirmed my dimensions on another thread but on the issue of box dimensions, does the area ie. depth behind the sub effect performance. I only plan to have 15cm behind the sub magnet/coil. Is that going to compromise sound,.... or should I just make the depth greater? SUB BOX AREA ---------------------------- I need an INTERNAL size of 0.75 cubic foot. thats 21.24 liters. (cm) I intend to make my box 37cm x 37cm x 15cm deep. thats 37 x 37 x 15 = 20.54 liters (+1 liter for sub pod = 21.5lt) Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 7, 2004 Share Posted November 7, 2004 You get about a lot don't you! Ideally, make the box with the rear at a different angle to the front, (assuming the sub is at the front). This will help prevent standing waves causing too much cancellation. Also, fill the box with wadding. Roughly 50% full. This will also alter standing waves, (which are a bad thing), and alter the size of the box the sub 'sees' helping it drop to lower frequencies, and making transient response smoother, (note-to-note changes). Quote Link to comment Share on other sites More sharing options...
SupraStar 3000 Posted November 7, 2004 Author Share Posted November 7, 2004 Originally posted by Matt Harwood You get about a lot don't you! yep, i'm like dog shit on your shoe waddings a great idea! I will add some after the build. yes, I am planning to add slopping fronts and different angles. (SEE ATTACHMENT). thanks for all yours help Matt and Matt Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 7, 2004 Share Posted November 7, 2004 Originally posted by SupraStar 3000 (SEE ATTACHMENT). 'Kin 'ell! - Start off with an easy project why don't ya! Quote Link to comment Share on other sites More sharing options...
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