kirill007 Posted May 18, 2016 Report Share Posted May 18, 2016 Why don't just use a ported box (which is also a 4th order box,but not bandpass)? No need to use a 4th order bandpass. trunk car. I dont want to seal off a box nor do i want to just lay one in the trunk. only option is a 4th that fires through rear deck or run a pair of 6.5 subs in the rear deck. Just port through the read deck with a "regular" ported box if you want to use less space, the only sealing you will have to do is the rear deck. But this is one of the very few installs where a bandpass box will be a good/better replacement, only when you are willing to sacrifice space. (you could always drop to 1 10) Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
SlamminBeats Posted May 18, 2016 Author Report Share Posted May 18, 2016 Why don't just use a ported box (which is also a 4th order box,but not bandpass)? No need to use a 4th order bandpass. trunk car. I dont want to seal off a box nor do i want to just lay one in the trunk. only option is a 4th that fires through rear deck or run a pair of 6.5 subs in the rear deck. Just port through the read deck with a "regular" ported box if you want to use less space, the only sealing you will have to do is the rear deck. But this is one of the very few installs where a bandpass box will be a good/better replacement, only when you are willing to sacrifice space. (you could always drop to 1 10) Rear deck is already sealed. And a normal ported box would likely not work well because the sub would be in a chamber separate from what it is pressurizing. Hence why i need a 4th order bandpass. I am trying to design a 4th for 1 8" that utilizes just one 4" aero port. I dont want a huge box. Link to comment Share on other sites More sharing options...
kirill007 Posted May 19, 2016 Report Share Posted May 19, 2016 Why don't just use a ported box (which is also a 4th order box,but not bandpass)? No need to use a 4th order bandpass. trunk car. I dont want to seal off a box nor do i want to just lay one in the trunk. only option is a 4th that fires through rear deck or run a pair of 6.5 subs in the rear deck. Just port through the read deck with a "regular" ported box if you want to use less space, the only sealing you will have to do is the rear deck. But this is one of the very few installs where a bandpass box will be a good/better replacement, only when you are willing to sacrifice space. (you could always drop to 1 10) Rear deck is already sealed. And a normal ported box would likely not work well because the sub would be in a chamber separate from what it is pressurizing. Hence why i need a 4th order bandpass. I am trying to design a 4th for 1 8" that utilizes just one 4" aero port. I dont want a huge box. The port is in the chamber you want to pressurize, just like with the bandpass.(the only difference is that you might get some rattles from the trunk) Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
SlamminBeats Posted May 19, 2016 Author Report Share Posted May 19, 2016 Why don't just use a ported box (which is also a 4th order box,but not bandpass)? No need to use a 4th order bandpass. trunk car. I dont want to seal off a box nor do i want to just lay one in the trunk. only option is a 4th that fires through rear deck or run a pair of 6.5 subs in the rear deck. Just port through the read deck with a "regular" ported box if you want to use less space, the only sealing you will have to do is the rear deck. But this is one of the very few installs where a bandpass box will be a good/better replacement, only when you are willing to sacrifice space. (you could always drop to 1 10) Rear deck is already sealed. And a normal ported box would likely not work well because the sub would be in a chamber separate from what it is pressurizing. Hence why i need a 4th order bandpass. I am trying to design a 4th for 1 8" that utilizes just one 4" aero port. I dont want a huge box. The port is in the chamber you want to pressurize, just like with the bandpass.(the only difference is that you might get some rattles from the trunk) so would building a ported box with an external port (square or circle) firing through ski pass hole work? There would be loss from some back pressure i assume. Link to comment Share on other sites More sharing options...
SlamminBeats Posted May 22, 2016 Author Report Share Posted May 22, 2016 I made a design for a 12. 32w x 16h x 16 d Port 6.5h x 5 w x 15 L (5" external) ported through arm rest. 2.15 net ported ~ 1.1 sealed 15.12 sq in per foot Are these specs good for a 12"? I think ill use the FI X. Link to comment Share on other sites More sharing options...
diegoclass2010 Posted May 22, 2016 Report Share Posted May 22, 2016 dint do the math but looks promising.. what the box going to be tuned to? Link to comment Share on other sites More sharing options...
SlamminBeats Posted May 22, 2016 Author Report Share Posted May 22, 2016 dint do the math but looks promising.. what the box going to be tuned to? 46Hz. Its porting through arm rest now, i should change the title. I think i like it. Im gonna build and see. Link to comment Share on other sites More sharing options...
diegoclass2010 Posted May 22, 2016 Report Share Posted May 22, 2016 try it out, try to do round over the port, inside and out( they gain dbs and help smooth air flow), fill the sealed section with about .5-1 pound of poly fill, and i would recommend to go over every joint with caulk. 4th order dont like leaks Link to comment Share on other sites More sharing options...
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