edog Posted February 6, 2010 Report Share Posted February 6, 2010 Rebuilding my wall in my suburban with my 4-lvl 4xl 18"s and need port tuning help. My box is 28 cubic feet. before sub and port displacement and i am trying to tune it to 32 hertz and I need somebody to double check my equations before I proceed! enclosure :28 cu.ft port :37" x 9.50" =351.50 inches of port length of port: 17 inches tunes it to 32 hertz. amps used : 4-Audioque 3500(1 on each sub) Any help appreciated THANKS Quote 2001 Southern Comfort Suburban sittin on 26"s Eclipse 6620 double din head unit (2004 dash mod) 4-AQ 3500D amps @1 ohm 8-Cadence 6.5 midbass 4- in each door. Image Dynamics Cd 1 pro HLCD 4-runs of KnuKoncepts 1/0 power wire 4-DC AUDIO lvl 4 xl 18"s in a wall 2-MECHMAN 270 AMP alternators(2 more on the way)xs power VCM 7-Deka intimidator group 31 batts(soon to be Xs power) 2-Rockford Fosgate Prime r300.4(1 bridged on mids, 2nd on CD1 horns and rear door speakers) 1-Rockford Fosgate 360.2(operated by Palm tungsten T5)My link Link to comment Share on other sites More sharing options...
Gotloud555 Posted February 15, 2010 Report Share Posted February 15, 2010 What's the dimension of the box? IS that 28 cubic after port and woofer displace?? Quote Link to comment Share on other sites More sharing options...
edog Posted February 16, 2010 Author Report Share Posted February 16, 2010 thats 28 cubic feet after port.I do not know the displacement of the subs. 4-lvl4 xl 18"s Quote 2001 Southern Comfort Suburban sittin on 26"s Eclipse 6620 double din head unit (2004 dash mod) 4-AQ 3500D amps @1 ohm 8-Cadence 6.5 midbass 4- in each door. Image Dynamics Cd 1 pro HLCD 4-runs of KnuKoncepts 1/0 power wire 4-DC AUDIO lvl 4 xl 18"s in a wall 2-MECHMAN 270 AMP alternators(2 more on the way)xs power VCM 7-Deka intimidator group 31 batts(soon to be Xs power) 2-Rockford Fosgate Prime r300.4(1 bridged on mids, 2nd on CD1 horns and rear door speakers) 1-Rockford Fosgate 360.2(operated by Palm tungsten T5)My link Link to comment Share on other sites More sharing options...
Gotloud555 Posted February 18, 2010 Report Share Posted February 18, 2010 (edited) thats 28 cubic feet after port.I do not know the displacement of the subs. 4-lvl4 xl 18"s Well you will have to subtract those too because it take up space too so by subtract the woofer displace it might not be 28 cub. Seem to me you got enough room for those 4 18 sub. It gonna be hard to figure out if that box tune on what you want. I can still calculate with the 28 cube. What's the external dimension? Are you using 3/4 MDF board... Edited February 18, 2010 by Gotloud555 Quote Link to comment Share on other sites More sharing options...
dwright27 Posted February 27, 2010 Report Share Posted February 27, 2010 seems like a lot of power for such a big box. watch the temps of your dustcaps. Quote 2006 F-150 4 DC XL M2 18's Walled Daily Driver XS Power 4 DC 3.5kw Team DC Team S.P.L. Lot of Audio Technix and 1/0 DC Audio Dealer American Bass Dealer XS Power Dealer Audio Technix Dealer Link to comment Share on other sites More sharing options...
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