LoudBimmer Posted November 3, 2009 Report Share Posted November 3, 2009 i just made this design for DC lvl3 18" but not sure if i did all calculation correct, especially on port size could someone please tell me if everything is correct Quote Link to comment Share on other sites More sharing options...
LoudBimmer Posted November 3, 2009 Author Report Share Posted November 3, 2009 anyone can help me? Quote Link to comment Share on other sites More sharing options...
IH8PunkRok Posted November 3, 2009 Report Share Posted November 3, 2009 your current port area is 45 proper port area for a 5.7 cube box is 68<x<98 somewhere in that range Quote -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
LoudBimmer Posted November 3, 2009 Author Report Share Posted November 3, 2009 is that little better? Quote Link to comment Share on other sites More sharing options...
Decaf Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) ur at [email protected] champ without bracing accounted for... so more like [email protected] way too small and ur top and bottom would be 30*24 im guessing u need to be closer to 6cuft but ive never seen specs for a 18" lvl3 Edited November 3, 2009 by Decaf Quote Link to comment Share on other sites More sharing options...
LoudBimmer Posted November 3, 2009 Author Report Share Posted November 3, 2009 (edited) im guessing u need to be closer to 6cuft but ive never seen specs for a 18" lvl3 that's the problem Rusty told me to put it in 5-6 C.F. box P.S. that my first time making a design Edited November 3, 2009 by nfsplayer Quote Link to comment Share on other sites More sharing options...
cqtama Posted November 3, 2009 Report Share Posted November 3, 2009 well if rusty says 5-6 cubes i say use 5-6 cubes he knows best. they are his woofers. but yea 4.5 is to small can you go any bigger? Quote R.I.P '01 blazer you treated my ears well until your transmission blew up. New Project [top secret] 149.0 db on music driver window open; so close I feel some boners are fueled by viagra and not true intimacy!......if you know what i mean.... I swear... sometimes I wish I was retarded so I could just agree with everyone x. Link to comment Share on other sites More sharing options...
LoudBimmer Posted November 3, 2009 Author Report Share Posted November 3, 2009 (edited) well if rusty says 5-6 cubes i say use 5-6 cubes he knows best. they are his woofers. but yea 4.5 is to small can you go any bigger? the box volume is 5.7, minus .6 c.f. port size, which give me 5.1 C.F. Edited November 3, 2009 by nfsplayer Quote Link to comment Share on other sites More sharing options...
Decaf Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) its .87cuft for port... u arent accounting for the wood... nor the end correction factor of using a slot port 5.75 after wood displ -.22 for sub (guessed on displ) -.87 for port ______________ 4.66cuft@~37hz and u still arent accounting for bracing displacement... which is why i said 4.5@37hz+ Edited November 3, 2009 by Decaf Quote Link to comment Share on other sites More sharing options...
LoudBimmer Posted November 3, 2009 Author Report Share Posted November 3, 2009 so what do i have to do to make it ~5.5 C.F. and tuned to 34 hz? Quote Link to comment Share on other sites More sharing options...
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