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View Full Version : Aeroports: 2 15"s for daily and comp



01 S 10
01-30-2009, 08:48 PM
I plan on eventually getting 2 15" Nightshades, and I know they work very well in about 3cf each. im working on a box design, and im trying to figure out if i should go with 4 4" aeros for daily and have an extra set (shorter for higher tuning) for comps..

or

2 or 3 6" aeros, with the same idea, swap them out for comp and daily. i want the smallest port noise because they will be very close to me on drivers side, subs on pass side.

reason why im asking, because for a 6cf net box, 4 4"s seem optimal (or even 2 6"s), but then again its for 2 15"s which makes me want more port area, i see people using 3 4"s aeros just for 1 15".... im in a dilemma

can someone recommend something? :confused:

thanks,
Cody

ado
01-30-2009, 08:56 PM
You would need 3 x 6" to get ~84 sq in of port wich makes about 14 sq in per cubic foot and right were it should be. 4 x 4" is only about 8 sq in per cu ft.

01 S 10
01-30-2009, 08:58 PM
You would need 3 x 6" to get ~84 sq in of port wich makes about 14 sq in per cubic foot and right were it should be. 4 x 4" is only about 8 sq in per cu ft.

thats what im thinkin too, but i've read that you only need "half" the port area with aero/round ports than you need with a slot port. any truth to that?

if i need to use 3 6"s, thats what i'll do

Blazin_Jason
01-30-2009, 09:56 PM
I'm using 5 4"ports for 2 15" BL's. I couldn't fit 6" ports as the length was too deep for my box. Before that I had 2 4" ports on 1 15" BL. Never done any real testing or anything, but all seemed fine for me.

netzero
01-31-2009, 01:02 AM
Aeros are more efficient then the 12^2 per cube, they're more like 6-8 per cube. Depending on power you'll probably be fine with two 6" aeros.

Lakota
01-31-2009, 01:48 AM
I recommend more port area than 4 4" for 2 15's.

01 S 10
01-31-2009, 09:41 AM
I recommend more port area than 4 4" for 2 15's.

2 6"s suffice?

power will be a little over 3kw for the pair, 1500 each

daily tune: around 34hz

comp tune: probably 46-48hz

Lakota
01-31-2009, 12:00 PM
2 6"s suffice?

power will be a little over 3kw for the pair, 1500 each

daily tune: around 34hz

comp tune: probably 46-48hz

If that's as much as you can fit, then that's the better way to go. A lot of the MECA guys are running a single 6" per 15. I haven't gotten to play with my 6" ports yet, but I know from experience that 2 4" ports is not enough for a 15.

TheFiverMan
01-31-2009, 12:03 PM
id do 4 6"ers if its for daily.

J31Rob
01-31-2009, 12:05 PM
I have 6" thinwalled PVC pipe I'll sell you for teh cheap.

Lakota
01-31-2009, 12:20 PM
id do 4 6"ers if its for daily.

He probably doesn't have the room for nearly 30" long ports.

roarzorz
01-31-2009, 01:37 PM
Round ports are more efficient and do not need as much port area as a slot port. Four 4"' or two 6" will work fine as a daily setup. If you're more concerned with TL #s then go for a little more port area with five 4" ports. I recommend no more than that for daily and four 6" is way too much.