IKnowImLost224 Posted September 9, 2012 Report Share Posted September 9, 2012 I know it's usually best to do two seperate chambers for each sub, but in this case I'm not working with much room. I'm trying to fit two 15" mtx 9500's into the back of a 2001 Malibu. I'm thinking the only way it would be possible to give the subs enough air space is to just make a single chamber ported box around 4-4.5 net cu ft. My question is if the box is around 4 cu ft and its a single chamber, do I run the risk of subs unloading or having too much air space? Any suggestions/help is appreciated. Link to comment Share on other sites More sharing options...
TylerParrish Posted September 9, 2012 Report Share Posted September 9, 2012 A lot of people run single chamber's, idk who said it's best to have a seperate chamber for each one, but I don't think that's true (don't know the specifics, hopefully someone more knowlegeable than me will chime in about that) And how much space do those subs call for? What're your dimensions, what's the box look like, a pic would be greattt! What the f**k is an appropriate signature supposed to look like?2013 Kia Forte Koup Pioneer AVH-X4600BT iDMax 12 DD M1c @ 2 ohms Rockford Prime 200.2 Pioneer 6.75" Comp Set XS S3400, D2700 Project DB Battery Terminals Axxess ASWC Stinger HPM Everywhereeee 90 Sq. Ft. of Stinger Roadkill Stock Alt Stuff To Come Sundown X-12 New Amp New Comps 4 Channel Amp My Current Build: http://www.stevemeadedesigns.com/board/topic/167462-13-kia-forte-koup-dd-setup/ My Old Build: http://www.stevemead..._+2000 +mustang Avatar Courtesy of SnowDrifter Link to comment Share on other sites More sharing options...
IKnowImLost224 Posted September 9, 2012 Author Report Share Posted September 9, 2012 Mtx recommends 2.48 cu ft per sub. I haven't built it yet but I was looking at 16 x 36 x 22 and tuned to about 30 Hz Link to comment Share on other sites More sharing options...
TylerParrish Posted September 9, 2012 Report Share Posted September 9, 2012 Well then you'r box should be 5 cu ft after displacement then, not 4. I recommend playing around with Torres to see what works for you. Go to the subwoofer section on here and 1 of the pinned links is gonna be about Torres Box tuning Calculator and how to use it What the f**k is an appropriate signature supposed to look like?2013 Kia Forte Koup Pioneer AVH-X4600BT iDMax 12 DD M1c @ 2 ohms Rockford Prime 200.2 Pioneer 6.75" Comp Set XS S3400, D2700 Project DB Battery Terminals Axxess ASWC Stinger HPM Everywhereeee 90 Sq. Ft. of Stinger Roadkill Stock Alt Stuff To Come Sundown X-12 New Amp New Comps 4 Channel Amp My Current Build: http://www.stevemeadedesigns.com/board/topic/167462-13-kia-forte-koup-dd-setup/ My Old Build: http://www.stevemead..._+2000 +mustang Avatar Courtesy of SnowDrifter Link to comment Share on other sites More sharing options...
IKnowImLost224 Posted September 9, 2012 Author Report Share Posted September 9, 2012 Yeah I already have that and that's what I was using. My concern though was that if the sub manufacturer only calls for 2.48 per sub and I'm putting two subs into 4-4.5 cu ft box wouldn't that be too much air space, or no because they each use a certain amount? Link to comment Share on other sites More sharing options...
TylerParrish Posted September 9, 2012 Report Share Posted September 9, 2012 Dude, what I'm saying is that it's not enough air space. If it's less than what they recommend, common sense should say it's not too much. What the f**k is an appropriate signature supposed to look like?2013 Kia Forte Koup Pioneer AVH-X4600BT iDMax 12 DD M1c @ 2 ohms Rockford Prime 200.2 Pioneer 6.75" Comp Set XS S3400, D2700 Project DB Battery Terminals Axxess ASWC Stinger HPM Everywhereeee 90 Sq. Ft. of Stinger Roadkill Stock Alt Stuff To Come Sundown X-12 New Amp New Comps 4 Channel Amp My Current Build: http://www.stevemeadedesigns.com/board/topic/167462-13-kia-forte-koup-dd-setup/ My Old Build: http://www.stevemead..._+2000 +mustang Avatar Courtesy of SnowDrifter Link to comment Share on other sites More sharing options...
TylerParrish Posted September 9, 2012 Report Share Posted September 9, 2012 Hell, you might not be able to fit 2 15's in your trunk. It should be 5 cu ft after displacements, so it may start off as being a 7 or 8 cu ft box. What the f**k is an appropriate signature supposed to look like?2013 Kia Forte Koup Pioneer AVH-X4600BT iDMax 12 DD M1c @ 2 ohms Rockford Prime 200.2 Pioneer 6.75" Comp Set XS S3400, D2700 Project DB Battery Terminals Axxess ASWC Stinger HPM Everywhereeee 90 Sq. Ft. of Stinger Roadkill Stock Alt Stuff To Come Sundown X-12 New Amp New Comps 4 Channel Amp My Current Build: http://www.stevemeadedesigns.com/board/topic/167462-13-kia-forte-koup-dd-setup/ My Old Build: http://www.stevemead..._+2000 +mustang Avatar Courtesy of SnowDrifter Link to comment Share on other sites More sharing options...
IKnowImLost224 Posted September 9, 2012 Author Report Share Posted September 9, 2012 I understand what your saying. I guess I dont know how to get across what I'm saying. For example... 1 sub in chamber by itself would require 2.48 cu ft. If you take two subs and put them in the same chamber, wouldn't 4.5 cu ft be too much air space if they are in one chamber? I understand if you had seperate chambers it would be 2.48 each and they wouldn't be sharing space. I guess I'm new to the one chamber stuff lol. Do you treat the one chamber for two subs as you would two separate chambers for each sub and just combine the space? Link to comment Share on other sites More sharing options...
TylerParrish Posted September 9, 2012 Report Share Posted September 9, 2012 yes, you treat 1 chamber the same as if you had 2. And with the dimensions you gave me, you cannot fit 2 15's in your trunk with the correct airspace. Not unless there is absolutely noooo bracing and you invert your subs, so i would sayno, you can't fit them both in there What the f**k is an appropriate signature supposed to look like?2013 Kia Forte Koup Pioneer AVH-X4600BT iDMax 12 DD M1c @ 2 ohms Rockford Prime 200.2 Pioneer 6.75" Comp Set XS S3400, D2700 Project DB Battery Terminals Axxess ASWC Stinger HPM Everywhereeee 90 Sq. Ft. of Stinger Roadkill Stock Alt Stuff To Come Sundown X-12 New Amp New Comps 4 Channel Amp My Current Build: http://www.stevemeadedesigns.com/board/topic/167462-13-kia-forte-koup-dd-setup/ My Old Build: http://www.stevemead..._+2000 +mustang Avatar Courtesy of SnowDrifter Link to comment Share on other sites More sharing options...
stevew007 Posted September 9, 2012 Report Share Posted September 9, 2012 well the manufacture only recommends it be in a 2.5cf box.But it dont mean it has to be.dont get me wrong when doing a daily driver box i try and go with spec.you can build it bigger or smaller and should sound fine.I had 4 9512's in a 4 cf box in my crx. yes it was for comps tuned high BUT they never blew up from the box being to small Link to comment Share on other sites More sharing options...
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