New setup

[lockdown801 0]

Well I have been looking for a new set of 12's for my truck. I just purchased a dodge mega cab that needs some serious audio loving. I have (2) 15 eclipse ti subs that will not fit. I am trying to put (2) 12's behind the rear mega cab seats. I have been thinking seriously about buying a pair of Fi BL or BTL subs but I am worried about space for the BTL's. I have 60 inches of width 23 inch height but the depth is only 7.5 inches at the top and around 11 at the bottom. Is there a way I could build a ported enclosure with those dimensions that could effectively push 2 BTL's or BL's. I would be using 2 DEI Viper D1200.1 amps. I am very impressed with the BL and BTL line. I also like that they are built locally. Thanks

[mjmarovi 8]

Well I have been looking for a new set of 12's for my truck. I just purchased a dodge mega cab that needs some serious audio loving. I have (2) 15 eclipse ti subs that will not fit. I am trying to put (2) 12's behind the rear mega cab seats. I have been thinking seriously about buying a pair of Fi BL or BTL subs but I am worried about space for the BTL's. I have 60 inches of width 23 inch height but the depth is only 7.5 inches at the top and around 11 at the bottom. Is there a way I could build a ported enclosure with those dimensions that could effectively push 2 BTL's or BL's. I would be using 2 DEI Viper D1200.1 amps. I am very impressed with the BL and BTL line. I also like that they are built locally. Thanks

mounting depth wise, because of the angle either the BTL or BL should work for you. with that power, I would just go for the BL as for space, my recommendations would be using two layers of 1/2" MDF for 1" thick walls, this would help maximize strength and inside box volume. a couple braces would help too, but basically i come up with a total of 5.1 cuft, closer to 4.7 after bracing and sub displacement. then figuring on ~12 sq. in. of port per cube, that gives you 4 cuft of actual usable air space for the woofers. best way I can see of doing the install would be to use aeroports out the top of the box, ideally speaking if you had room to let the ports extrude out the top of the box, you could tune lower and get your total internal volume up closer to ~4.4 cuft. if you can't, then tuning anywhere in the low 30 hz range will be tricky, will have to turn the port inside the box to get it to fit, seeing as in this situation your only option for port location will seem to be on the top plate of the box, which for performance is perfectly fine.

and for the tuning, what are your goals with this system?

[lockdown801 0]

My goal is to have deep clean hitting bass. I am sure I can't get close to whay my 15's could do. But my 15's were in a mdf/fiberglass sealed box in the back of my pathfinder. I was thinking of making the sides, top and part of the bottom MDF but the back and rest of the bottom fiberglass so I can get every sq' in of air space possible. I also need to squeeze in a amp rack on the face in the middle of the woofers.

[mjmarovi 8]

Better use several layers of fiberglass as this should be one quite loud build. going from sealed in the back of an SUV to ported closer to the windshield, your new setup if done right will most likely be louder. I would put the woofers right next to each other on one side of the enclosure, and put the amps on the other side. it will help output. sounds like no problem putting aeroports on top, so I would let them stick out as much as you can without looking silly, like maybe to the top of the back seat or something. do you need help designing the box, or can you handle that?

if you use 4 aeroports, 4" diameter, and make them 25" in length, let 8" of them stick out of the box, and that would give you a tuning of 33hz. that's assuming the 60x23x7.5x11 dimensions with 1" thick MDF. which would result in 4.4cuft after port and displacement, tuned to 33hz. subs forward, port up, that should wang pretty hard. oh and throwing a couple pieces of 2x4's in there for bracing probably wouldn't be a bad idea.

[lockdown801 0]

I could use some help designing this box. How thick should I go with the fiberglass? I have 6 gallons of resin and rolls of mat. IF i could fit 15's in a sealed enclosure would it hit as hard? I have been able to get some more room on the back wall by removing a panel.