Hey, I have a 12' fusion sub in the back of my 2 door, everyone with a 2 door knows there is very little room behind the rear seat. When i first bought my sub, the rear seat was out and there was a lot more room for the sound waves to travel, the sub performed beyond my expectation. Now, with the rear seat in, my sub is literally squished between the tailgate and the rear seat. The volume of the bass has dropped a good amount, the quality of it came down a little as well. Has anyone put the sub cone in the rear seat, such as, http://www.youtube.com/watch?v=Fmpokgq1ImI, or has anyone tried the custom sub enclosure kit from quadratec? Any ideas on what I should do? Thanks

 

In my TJ, after banging my head trying to find the solution between having a sub and having cargo room... I finally tried the sub in the seat. It ruined the seat for sitting. If you ever use your rear seat, do not put a sub in it. If you never use the seat, then just yank it out though. One more thing to keep in mind is that the TJ rear seat was further from the floor than the JK rear seat. No airspace there.

I havent heard of a fusion sub. If it is a good sub that you want to keep, the best solution IMHO is to find out if it can be mounted upside down. If it can (not all subs can last upside down) then I would get a downfiring box built to the proper airspace requirement 6" or so from the jeeps floor. That way it is not highly visable, low frequencies stay in the jeep better, and you can still use your cubby.

 

Alright, thanks. I do sometimes have people in the backseat, so I don't think i'll be going that route. Although mounting it upside down is a good idea.

 

Its a good idea as long as the sub is designed to be ran upside down. Some subs do not like being mounted that way and have their lives snubbed short. If you like that sub, you should make sure downfiring is a safe option for it.

 

How would I know whether or not its safe, would it say in the manual, or does it depend on the type of sub it is? In your tj, what sub did you have and what amp, and did you change out the stock battery? Thanks a lot.

 

What about a custom box were the rear speaker bar is. They would have to 8" subs. Not sure if you're willing to change set up. I run a 12" sub in a box that won't come close to fitting behind the rear seat but i don't use my rear seat. I was stupid in thinking the cats wouldn't try it out as a scratching post so its in no shape anyway.

 

I'm working on a custom sub box for the same location as the factory sub that will hold a 10" sub and still let you use the storage compartment and back seat. I'll have to carpet, paint, or rhino it to keep it pretty hidden. I plan on it bolting in using the same studs as the factory sub. It will be a little taller than the stock sub, but not obtrusively so.




If it turns out well, I'll let you know.

 

You didn't say which direction the subs were firing or what kind of enclosure they were in. If the box is "squished" and the subs are firing directly into the back of the seat then that fact alone might kill the sound. Sounds is, essentially, air moving. Block that movement and the sound changes. If this is the case, and you have the room, try turning the box so that the subs fire up instead of into the back of the seat and see if that improves the sound.

Other options you may have revolve around the type of enclosure you have the subs in. If you're running a sealed box, then that's typically the largest enclosure for a given sub. A ported or an isobaric enclosure should be smaller and give you the same quality of sound for a given sub. With that in mind though, lots of subs these days I engineered for a particular type of enclosure, so your milage may vary.

It seems that far too many people don't know that the enclosure that a sub is in is going to have far more effect on sound quality than sub size or power ever will. An 8" sub in a correct enclosure is going to kick the living snot out of a 12" sub in the wrong one every time. Check the manual that came with your sub (or see if you can find it online) to see what enclosure options you might have for it, you might be able to run a smaller box and get even better sound out of it.

 

Since, my jeep didn't come with a sub, where would the factory sub be positioned. That's cool you're going to make your own box, let us know how it turns out.

 

Oh sorry, I had the sub pointed toward the tailgate but that created nasty vibrations with the sub at minimal volume levels. Right now, I have it pointed toward the rear seat. I tried pointing it upwards, there just isn't any room. I have a ported enclosure. This being my first sub, I really didn't know too much. ow, when I'm checking the my manual, what type of options am I looking for? So you're saying, if I have a 12' sub, I can possibly run that in a 8' or 10' enclosure? If yes then that will solve the squishing problem. I just checked online, the enclosure's dimensions are 550mm x 400mm x 385mm, and it doesn't list the subs dimensions. I have a fusion re-pk1120 if that helps.I also checked the manual and it doesn't say much.