TheBetterMethod Posted November 30, 2010 Report Share Posted November 30, 2010 Alright guys, here it is. I'm planning on getting a Fi Q 15 for my car. I'll be making a box for it and it's gonna be a simple trunk build, no wall or trunk wall, just a nice box in the trunk. So the idea for the box (since it has to fit through my small trunk opening and shallow trunk) is to make it sub up ports forward. The trunk only allows for a smallish box, if I want to be able to take it out or fit stuff in there on grocery day. Total box volume before displacement will be 3.7, -.19 for the sub and -.3 for aero ports and that leaves me with 3.2 after displacement. To tuned for 33hz I'll need 26.75" of port length if I use two 5" aero ports. Two 5" ports gives me about 12sqin per cubic foot, so that's within Fi spec. So I've got some questions now. For starters, does anyone make a 5 inch aero port? If not, then I could do either 3, 4" ports, or 2, 6". But two 6s would be slightly more than recommended port area. And three 4s would mean sticking a port right in the middle of the front of the box, where the sub will probably get in the way. So if I can get 5" aero ports, then I'm good to go, if not then I have more thinking to do. If you guys have any input, especially on where I can get 5" aero ports, please speak up. I need all the help I can get. -TheBetterMethod Quote 2005 Subaru Outback Wagon Pioneer 9400BH Fi Q 15, SAZ1500dV3 The first build>>> http://www.stevemead...-outback-build/ 140.9 @ 36hz Sealed on dash! REBUILT!!! 2 Fi Q 15s, 2 SAZ1500dv3 146.9 @ 39hz dBDRA certified Link to comment Share on other sites More sharing options...
SQMonte Posted December 1, 2010 Report Share Posted December 1, 2010 how much power are you gonna be giving it? Quote Alpine CDA-117...Memphis 16-X03 CDT Audio SQA-4100...SEAS Prestige H1396...Crescendo MP-6 Soundstream Rubicon 1.2500d...Digital Designs 3512f Link to comment Share on other sites More sharing options...
AI James Posted December 1, 2010 Report Share Posted December 1, 2010 id just use 6" aeros myself if aero's are the way your going to go Quote Link to comment Share on other sites More sharing options...
TheBetterMethod Posted December 1, 2010 Author Report Share Posted December 1, 2010 Thanks for the replies, I'll be giving it 1200W. I'll remeasure and crunch numbers to see if a slightly larger box will fit. That will let me use shorter 6 inch ports, and get the port area within recommended specs. Quote 2005 Subaru Outback Wagon Pioneer 9400BH Fi Q 15, SAZ1500dV3 The first build>>> http://www.stevemead...-outback-build/ 140.9 @ 36hz Sealed on dash! REBUILT!!! 2 Fi Q 15s, 2 SAZ1500dv3 146.9 @ 39hz dBDRA certified Link to comment Share on other sites More sharing options...
OldsBoomer Posted December 1, 2010 Report Share Posted December 1, 2010 you'll be fine going over 12 sp inches per Quote Suburban Coming Soon Link to comment Share on other sites More sharing options...
TheBetterMethod Posted December 1, 2010 Author Report Share Posted December 1, 2010 Yeah, I know, but with 3.2cu.ft. and two 6" ports it would be over 16...56.52 total area which would be 17.7 per cube. 51.2sqin. is the max recommended for 3.2cu.ft. If I can fit a 3.6-7 cube box after displacement, the two 6s would be within spec... Quote 2005 Subaru Outback Wagon Pioneer 9400BH Fi Q 15, SAZ1500dV3 The first build>>> http://www.stevemead...-outback-build/ 140.9 @ 36hz Sealed on dash! REBUILT!!! 2 Fi Q 15s, 2 SAZ1500dv3 146.9 @ 39hz dBDRA certified Link to comment Share on other sites More sharing options...
TheBetterMethod Posted December 1, 2010 Author Report Share Posted December 1, 2010 Two 6" ports would require 33+ inches each for a 3.7cu.ft. box @33hz. That's a lot of port. Quote 2005 Subaru Outback Wagon Pioneer 9400BH Fi Q 15, SAZ1500dV3 The first build>>> http://www.stevemead...-outback-build/ 140.9 @ 36hz Sealed on dash! REBUILT!!! 2 Fi Q 15s, 2 SAZ1500dv3 146.9 @ 39hz dBDRA certified Link to comment Share on other sites More sharing options...
OldsBoomer Posted December 2, 2010 Report Share Posted December 2, 2010 Two 6" ports would require 33+ inches each for a 3.7cu.ft. box @33hz. That's a lot of port. yup thats rigth 15's take up space for sure Quote Suburban Coming Soon Link to comment Share on other sites More sharing options...
TheBetterMethod Posted December 3, 2010 Author Report Share Posted December 3, 2010 Ok, there's a problem now. I've been using the port calculator on carstereo.com for my port measurements. If I enter the port width 13, height 3.7 it says I need a port 19.95" long. Which would work beautifully. If I enter the port width 3.7, height 13 it says I need a port 24.6" long, that would not work beautifully. So I guess I need to use a different calculator, and I can't use the Torres cause I'm a Mac user. Drat! Quote 2005 Subaru Outback Wagon Pioneer 9400BH Fi Q 15, SAZ1500dV3 The first build>>> http://www.stevemead...-outback-build/ 140.9 @ 36hz Sealed on dash! REBUILT!!! 2 Fi Q 15s, 2 SAZ1500dv3 146.9 @ 39hz dBDRA certified Link to comment Share on other sites More sharing options...
OldsBoomer Posted December 4, 2010 Report Share Posted December 4, 2010 Ok, there's a problem now. I've been using the port calculator on carstereo.com for my port measurements. If I enter the port width 13, height 3.7 it says I need a port 19.95" long. Which would work beautifully. If I enter the port width 3.7, height 13 it says I need a port 24.6" long, that would not work beautifully. So I guess I need to use a different calculator, and I can't use the Torres cause I'm a Mac user. Drat! dont think you can man.. what car do you have? Quote Suburban Coming Soon Link to comment Share on other sites More sharing options...
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