bad_ass_car Posted June 5, 2012 Report Share Posted June 5, 2012 i have a box made for my full size blazer with 4 pa mojo 15s 38wx32dx20h and i want to tune it to 35hz. can someone please help me figure out what size my port should be? Quote i'm new to the spl world and loving it!!!4- power acoustik mofo 152srd d9 Link to comment Share on other sites More sharing options...
CleanSierra Posted June 5, 2012 Report Share Posted June 5, 2012 I don't think you have enough airspace to properly feed 4 15s Quote Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
bad_ass_car Posted June 5, 2012 Author Report Share Posted June 5, 2012 i know its low on cubes but right now its what i got. i dont have the money to make another box at this point. Quote i'm new to the spl world and loving it!!!4- power acoustik mofo 152srd d9 Link to comment Share on other sites More sharing options...
loudNlow87 Posted June 5, 2012 Report Share Posted June 5, 2012 (edited) I think you're at about bare minimum there. That's just under 3 cubes a piece. The woofers displacment along with the port would shrink that right down. EDIT: Do you have enough room to make the port external? Edited June 5, 2012 by loudNlow87 Quote '11 Jeep Patriot New Build Head Unit: Pioneer AVH-P3200DVD Front: Massive CK69 Components Front Amp: Massive NX2 Rears: Infinity Kappa's Subs: 8 Sundown SA-8 v2's Sub Amp: AB 450.1 XS D3100 Come on 150! Link to comment Share on other sites More sharing options...
bad_ass_car Posted June 5, 2012 Author Report Share Posted June 5, 2012 if i face the port up i could. my profile pic is the box and subs im working with Quote i'm new to the spl world and loving it!!!4- power acoustik mofo 152srd d9 Link to comment Share on other sites More sharing options...
loudNlow87 Posted June 5, 2012 Report Share Posted June 5, 2012 Is this just a sealed box or is it already ported? Quote '11 Jeep Patriot New Build Head Unit: Pioneer AVH-P3200DVD Front: Massive CK69 Components Front Amp: Massive NX2 Rears: Infinity Kappa's Subs: 8 Sundown SA-8 v2's Sub Amp: AB 450.1 XS D3100 Come on 150! Link to comment Share on other sites More sharing options...
bkolfo4 Posted June 5, 2012 Report Share Posted June 5, 2012 Don't put 4 15's in that box unless the port can be external. . . You need at least 150 sqin of port, and really more like 200 sqin. Put 3 in there for now with 150 sqin of port. Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
bad_ass_car Posted June 5, 2012 Author Report Share Posted June 5, 2012 already ported out the back from side to side 6 inches tall. im pulling the port and putting on a new back plate to make it sealed and going from there Quote i'm new to the spl world and loving it!!!4- power acoustik mofo 152srd d9 Link to comment Share on other sites More sharing options...
loudNlow87 Posted June 5, 2012 Report Share Posted June 5, 2012 You could put three 8" external aero's out the back each at 17" long. Still barely squeezing by on volume, but.. If you want four, go for it. I honestly don't think it'll really be that bad. Invert the woofers even. Get as much space as you possibly can. Quote '11 Jeep Patriot New Build Head Unit: Pioneer AVH-P3200DVD Front: Massive CK69 Components Front Amp: Massive NX2 Rears: Infinity Kappa's Subs: 8 Sundown SA-8 v2's Sub Amp: AB 450.1 XS D3100 Come on 150! Link to comment Share on other sites More sharing options...
bad_ass_car Posted June 5, 2012 Author Report Share Posted June 5, 2012 (edited) i'll try and invert my subs and what if i did a port out the center in the back, top to bottom how big would that have to be? are the aeros the round ports? Edited June 5, 2012 by bad_ass_car Quote i'm new to the spl world and loving it!!!4- power acoustik mofo 152srd d9 Link to comment Share on other sites More sharing options...
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