Tuning and Port Area Correlation

[EPerez 236]

Ok, I tried to do some research about tuning and port area, so I didn't have to make a thread. I read a thread on smd and they were saying 10sqin per cube was better for low tuning and then others were saying other things like more the better so I don't know which is right. A lot of misleading information out there!! Much rather ask here and know I'm getting the right answer lol

I'm most likely going to be ask pro-rabbit for a design once I am sure of my measurements,It'd be nice to know exactly what it should be, so I can expand my knowledge. I would like to know for my system specifically, but also in general.

EQUIPMENT:

Subs: 2 SSA Zcon 12s

Amp: 2 Crescendo BC2000s(wont use full power due to not enought electrical lol)

Vehicle: 2012 Fusion

Box placement: Subs and port front firing sealed off from trunk. Port in middle.

Rough dimensions: 14h x 35w x 33d(? not sure yet)

GOALS:

I loveee the lowsss and would like to tune around 29-31. I would like my system to play 25-45 with authority. I dont care too much about the upper bass 50-60. I don't really care about numbers really. I want this to be a daily ground pounder that can move A LOT of air Would that be a good tuning for that?

How much port area should this box have?? Since height is 14". The height of the port will be 12.5" so width will determine the port area.

Thanks in advanced!

Edit: I like the low tuning, because when I demo for friends and people low tuning is better and louder to ear(right?). Normal listening by myself is turned down and isn't blaring to the max, so the sq will be better to.

Also here are t/s parameters

Fs 37.7 / 36.8 Qms 6.01 / 6.12 Qes 0.24 / 0.24 Qts 0.26 / 0.26 Mms 212 / 222 Sd 481 / 481 Vas 24.4 / 24.4 Spl 90.7 / 90.3 Bl 17.74 / 25.2 Xmax 29 / 29 mm Wattage 2250wRMS Displacement 0.19cuft

Edited December 7, 2012 by Bassink

[ricksi30 923]

I'd shoot for a minimum of 6" width. Determining the minimum amount of port area has NOTHING to do with the size of the enclosure.

[EPerez 236]

Before that's what I thought but then after very respectable people told that it is more based on the sd, tuning and xmax. I had it in torres with a min of 6"

[MikeMartel 64]

Square inches of port per cube is a silly and pretty useless rule of thumb. Port area should be based off of the subwoofers your using, and overall, Port Mach is really what you should be worried about.

Stefan made this awesome site http://portsgalore.stefanhinote.com/?do=ventmach and should help you out a lot.

[EPerez 236]

Square inches of port per cube is a silly and pretty useless rule of thumb. Port area should be based off of the subwoofers your using, and overall, Port Mach is really what you should be worried about.

Stefan made this awesome site http://portsgalore.s...om/?do=ventmach and should help you out a lot.

What should the vent mach be?

Nice site btw!!!

Edited December 7, 2012 by Bassink