Has anyone tried to modify (sawzall) the lower rear deck to accomodate a 10" shallow mount sub in a small mdf box in the stock sub location? I want a bigger sub in the stock location and want it in a small sealed enclosure and mount it from the bottom.. I have not seen anyone try this and wonder why.

 

I'm actually going to be doing this withing the next few weeks. I bought 2 kicker shallow mounts 10". Right now I'm debating whether I want the box to be sealed or ported, with the bass going in through where the old sub was.

 

this is what I'm looking to do but with only 2 subs

 

That looks real clean. I would like to have seen pictures of the box for the four subs. That custom trunk panel looks sweet. I wonder how hard it was to make. The difference with mine is that I want to have the sub firing into the cabin. That's what Boston Acoustics recommends for the sub I want (G310). It's not really a shallow mount. But the recommended box is 12" square and only 9" deep (exterior). I don't anticipate a problem with cutting a hole in that lower metal deck. I'm not sure why that piece is even there.
Good luck with your install. Please post pics if you can. Especially of the mod of the rear deck and sub boxes. Thanks.

 

Harlemsfinest135, was any metal cut for that install? After further review I see that is not a separate lower deck but all one piece. I could still cut out a piece to accomodate the box but am afraid I might weaken the entire structure. With the added weight of the bigger sub and the enclosure would I then have a problem? It also looks like it would be a tight squeeze. The box would be 12" square and the rods for the trunk lid might be in the way. Now I don't know what to do. 1. Put the box so the driver is firing through that hatch in the middle of the back seat. But I don't think I want that thing down all the time. 2. Have the box on the trunk floor firing up towards the vacant hole from the removed stock sub. 3. Get the Pioneer 8" free air and drop it in with no box and retain all the trunk space. 4. Go ahead as planned and hope the deck can support the extra weight after it's been cut.
I think I'm leaning towards option 3. I'm sure it would sound alot better than stock especially since it'll be with more power. Also all the other speaker replacements will be delivering alot more bass than the stock ones.
Let me know if you can if that deck was cut in the install with the four subs. Thanks.

 

This is not the actual picture of my car it's just an exampleof what I'm trying to do. I also have the same problem I don't know If I want a sealed enclosure or I want the sub firing into the cabin. But I do suggest you go with a shallow mount. Almost every company makes one. I chose the kicker because it gave me a cleaner bass over the pioneer and Rockford shallow mounts. If you go to the 3g sticky forum and go to the stock subwoofer upgrade section you can get a better idea of the rear deck.

 

I thought you knew the person who owned that car. It looks like a TL trunk though. Well I think I'm going with a 10" and have it fire through the hatch. I'm thinking of making a cabinet with the sub enclosure in the middle, an amp rack on one side, and storage on the other. But that means I'll have to get three separate amps so they can fit because I'll only have about 11" on either side of the sub. I was going to use a 5 channel amp(Boston GT5750) but that is about 22" long. I could mount it on top, but that will be a tight squeeze. The shortest I could make the box is 11" and clearance in the trunk is about 14.5", height of amp is 2-3/8 leaving about an inch of extra space. I dunno if the amp needs more space to breathe. Also not sure if that 2-3/8" includes the feet of the amp. Another wrinkle is that the back seat is angled so the front of box would have to be at an angle to sit flush, while the rear of the box, could be straight or angled. But figuring the cu. inches inside of box with an angled front and straight back would be really difficult. I could give it a guess, but I don't know how much of a difference it would make if the interior cu. inches were off by a little.