Ported Box, Dual 12’s, com or div chamber?

Well, I completed my new box a couple days ago, put it in my trunk and was really impressed with how it turned out/sounded(major thanks to WinSD and the guide on here). I have made other boxes before, but they were always sealed so they were a little bit more forgiving. So, long story short, I played around with WinSD for a week or so, and thought about what I could do with the trunk space I have(1997 Nissan Maxima 4dr, fairly large trunk, small hole behind armrest from trunk to back seat area) and what I expected out of my final system(mostly SQ but I would like it to get loud when I want it too, but sound well while doing so.

So in the end, this is what I came up with...

3/4" MDF(naturally), sealed up extremely well, rubber undercoating on the inside, yes, I know I used too many screws but for the power level I am running at I do not see the box comming apart. Total inside area, after taking out port/divider/driver displacement is 3.66cu.ft. IIRC, leaving 1.83cu.ft. per sub. Ports are tuned @36hz IIRC and after listening to it in the car hooked up, well, I was really impressed...

here's what's going in the trunk...

the subs are (2) Earthquake DBX12's, and are being driven by(I know, please don't flame: it was free and I am in the process of upgrading) an Audiobahn A8000T supposedly 800w rms X 1 @ 2ohm, which would(if that amp produced that kind of power, which I doubt it does) put me right where I should be being that the 12's need 400w rms each and they  both have single 4ohm coils, which gives me 2ohm when wired in paralell(which they are). so finally, my question is, I posted my finished results over at my Maxima forum in the Audio section, and a few guys were asking me why I put a divider in there, that I should put some holes in it and make my box a common chamber design that I could possibly gain a few db or maybe some better sq....

one guy in particular was saying someting about phasing issues if I had one side of my divided box different from the other(which I know there isn;t since I built it), but even if this were true, wouldn't there have to be a fairly substantial difference between the 2 sides to make a noticable difference in sq inside the car??? would I even realize any sq/spl difference by makeing my box a common chamber??? I need some advice from the experts. I do not want to go messing with my box if I don't have to. also, would removing some of the divider make a substancial differece in my box volume that would throw my tuning off, or would I have to do anything to retune or mess with my port area???

sorry for the long post, I just need some advice before I go tearing my stuff apart...

by the way, here's a pic of it in the car, and yes I will be doing somethign aboutthe way it looks. this thing REALLY sounds good the way it is(considering what's pushing the subs), it popped my speaker grilles off my back dash and makes them jump up about 8" and hit the top of the back window...

I knew someone on here would catch that, I test fitted the top on there and put a screw in each side and it split, but I did pre-drill the rest of the holes, i swear...

so, one vote for no change???

^^^right, I wold have to make another box, that is wat I was thinking. so, do you think it would gain anyting by having the same setup but with a common chamber???-that is my question!

I never said otherwise. you typed that like  was saying making cutouts would lower the tuning, which I did not. I was only askig if it wold mess with it at all. the guy on the other forum said that it would not, he said that changing box volume would not change the tuning freq of the box, which I believe it will if you do not change port length to compensate, which in turn will give you less box volume and so on and so forth...

all else being equal ,if you lower box volume, you are either going to loose spl or loose go up in freq, depending on what you do to your port, but you will not be able to get back to where you were...

so if I was to make another box, make it same interior volume, common chamber, and put one big port in the middle that = the port area of the 2 smaller ports combined??? sounds doable...

wouldn't having just one big port also slow down my port air-velocity??? that is al little too high now as it is, but it can;t be heard from inside the car so I don;t really care...

I AM NOT going to build another box.... it just sounded to me like that is what he was saying. I have got this sounding the way I want it and I am not changing until I upgrade to all new equiptment. I I was just trying to see where he was comming from and figure out what he was advising me to do, but yes, I was thinking that wether you have 2 small ports or on big one you still have the same port area and it would make no difference...

I will be making a box for my bronco(LOTS of room!) for my 2 15's in a week or so and it will be vented, so I was thinking of maybe making it a common chamber if that is the way to go, since I will be making it from scratch and designing it to be common chamber from the begining...

one word to those thinking of going vented... DO IT!!! I have always built sealed boxes, partly due to my lack of experience, but with a little thought, and of course I cannot praise WinSD enough, I made it happen and I don't think I will ever go sealed again...

naw d00d, wasn't getting excited, just meant I really do not want to fool with what's in my car now, it's all good...

so I still have not gotten any other opinions as to wether it would be better to have the 2 subs divided or common chamber???