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View Full Version : How many 4 inch round ports needed?



Bass911
06-01-2010, 07:26 PM
In a box that's 8 cubes common chamber for 2 RE Sxx15's, how many 4 inch round ports are needed? The box will be tuned to 34hz. I'm assuming I need 4-6 round ports?

CRXBMPN
06-01-2010, 07:29 PM
i'd grab 3 6" round aeroports, one of those is nearly exactly what two 4" aero's are and three 6 > six 4 imho... if you dont already have the ports that is. no sense in adding cost if you have them laying around.

Bass911
06-01-2010, 07:50 PM
i'd grab 3 6" round aeroports, one of those is nearly exactly what two 4" aero's are and three 6 > six 4 imho... if you dont already have the ports that is. no sense in adding cost if you have them laying around.

Are you saying 4 4" ports are enough if I don't want to pay for aeros?

Cabin_Pressure
06-01-2010, 07:55 PM
Products Menu (http://psp-inc.com/tools.html)
That will give the length. I would do 4 or 2 6s.

Bass911
06-01-2010, 08:00 PM
Products Menu (http://psp-inc.com/tools.html)
That will give the length. I would do 4 or 2 6s.

I was already using this calculator, I just didn't want too much port. The RE Box Calculator is calling for a 15.5 inch wide slot port? This is the only reason I'm thinking about doing round ports.

soundstreamer
06-01-2010, 08:02 PM
Are you saying 4 4" ports are enough if I don't want to pay for aeros?

That is not even close to what he said... He said:
3x 6" aeroports would be better than 6x 4" aeroports.

You could break down what he said a little further and you would get:
6" aeroports would be better than 4" aeroports

Slo_Ride
06-01-2010, 08:22 PM
You would need atleast six, but realistically eight, 4" ports. My suggestion - build a slot port or use either 6" or 8" ports.

Bass911
06-01-2010, 08:29 PM
You would need atleast six, but realistically eight, 4" ports. My suggestion - build a slot port or use either 6" or 8" ports.

The slot port is seeming too big for the way I want to mount the subs. I'll see what they have at Lowes, but I'm not paying $30 for one 6" areo.

Slo_Ride
06-01-2010, 08:32 PM
You'd need more than one 6". Nothing wrong with six inch pvc, I'd sell you some but I dont know if it would be a good deal for you once you fiqured in shipping.

Slo_Ride
06-01-2010, 08:32 PM
or just do eight 4" ports