Sub right behind driver's seat?

Vital

I have my Polk SR 12'' in the trunk in fiberglass enclosure but lately there's a lot of times I need 100% of my trunk space so I have to take the sub out and there's times where I can't put it back for weeks. Driving around without bass sux lol.

What if I get some slim 8 or 10'' and just throw it on the floor right behind driver's seat in the simplest square mdf box. It'll be temporary sub/enclosure while I can't have my 12'' in the trunk so I don't care about how it looks but I do care about what it'll sound like.

Is it a good idea?? Are there any issues I'm bound to run into - cancelations/phase/too close to sub....... ?

Car - typical 4 door sedan - Nissan Altima.

MacLeod

Build it down firing and it would work pretty well. Not as good as your 12 of course but it would give you a good bit of sub bass so you wouldn't feel like youre missing out on sound.

Vital

Down firing you say??? Hmm...

Whats the "science" behind it that makes it better than firing up?

MacLeod

The same principle as corner loading in home audio. Gives you a little more output but at the expense of a little bit of clarity but unless youre super picky, you wont notice it. The benefit to it in your case would be because its sitting so close to you. Having it firing up and you wouldn't get as much output from it because it takes so long for sub bass waves to form. Downfiring is sort of a way around that.

I cant give you any more science than that because Im not smart enough to know the science as to why it works. I just know it does.