I am currently looking to build a box for my MTX MXS1204 12", I am inputing my data into WinISD for the first time and have come up with a box size of 2.5ft^3 at 35Hz (4.02 in vent diameter, and 7.01 in port length) Would this be a good choice? I am designing the box for SPL, but the box will still be used for my daily driver. If im heading in the wrong direction could someone give me some heads up.

Specs are:

Qts: .85 Qms: 4.74
Vas: 23.3 Qes: 1.03
Fs: 43.3 SPL: 89.37
Re: 3.03 Pe: 400
Le: BL: 13.07
Xmax:16.510 Dia: 258 mm
Z: Sd: 522.790

Thank you!

 

Just a note, size doesn't matter, however if it could fit in the trunk of my Sunfire it would be nice.

 

If it's a daily driver than those specs look good but if you wanted to compete you would have to make the ports longer .

 

PM Killer_klown187, he knows his stuff and can help you out

 

OK, if i increase the port length will that change the tuning frequency?

 

I agree with selective sound, Lengthen that port about 21/4" and should be fine! Depending on placement that is.

 

it will lower it by a bit....

 

If you wanted SPL wouldn't you want to shorten the ports to raise the tuning frequency?

 

correct and and correct.

2.5 @ 35hz sounds pretty good for that sub. You'll probably have lots of output in the 50-70hz range.

 

I have found that a lil higher frequency works best for me, Just from personal experience, but hey Trial and error!!