enclosure design in a limited space

I've got a 300ZX and have had sealed boxes in it previously.  When fired up I got a lot of hatch rattle.  I ended up making a downward firing box on small legs and that helped, but it got stolen.

I'm wanting to build a ported enclosure(s) for the Z.  I don't want to fire the driver and ports up as I had bad experiences with that as stated above. 

Please discuss advantages/disadvantages of firing the driver and ports FORWARD, REARWARD, and the driver firing into one corner of the hatch and the port(s) into the other. 

Also, what about slot-loading the driver and/or ports by having them aimed at the floor with a 1-2" gap to let the sound out into the cabin?  Good, bad?

Thanks, have looked on Google, but can't really find what I need.

Mike

munchichee, that first link only has one page and ackowledges a similar problem, but doesn't give any solutions.

I've read a lot on the second site, but I don't recall it talking about aiming of subs.

Thanks,

Mike

My favoirite box I ever owned was a 1.75 cubic foot box that was down firing with a slot port. It had a soluid lip around three sides and the fourth side was opened and aimed towards the back of the car. I had a dvc orion xtr 10 in it and it hammered. Aslong as your sub meets the requirements for downfiring i have always found this to be the best way to help eliminate hatch rattle.

What does that mean?  I've never heard of a requirement for downfiring, can you explain please? 

Imagine a box with the same setup you just described, but the enclosure is ported.  Could you vent BOTH the driver and the port through that slot formed by the three sides of the box with no problem?  That's what I was thinking of doing.

Thanks,

Mike

[QUOTE=stevdart]About downfiring requirements http://www.partsexpress.com/resources/downfire.html[/QUOTE]

Many thanks for that link.  I'd never heard of that issue before.

My JL10W3 looks like it comes out to about 2% so it should be fine.

Thanks again,

Mike

If you have a port that exits a box into a slot loaded configuration, does the slot length add to the tuned length of the port?  I'm talking you have a port firing downward from a box and the box has 3 "rails" holding the box up with one side open.  I can see if the slot port was the wame width and height of the outlet that it would probably affect it.  I'd guess if the slot port was significantly different in height and/or width that it might not affect the tuned length. 

Ravendarat, do you know?

Thanks,

Mike