1. ## How many 4 inch round ports needed?

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?

2. ## Re: How many 4 inch round ports needed?

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.

3. ## Re: How many 4 inch round ports needed?

Originally Posted by CRXBMPN
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?

4. ## Re: How many 4 inch round ports needed?

That will give the length. I would do 4 or 2 6s.

5. ## Re: How many 4 inch round ports needed?

Originally Posted by DEAFWISH
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.

6. ## Re: How many 4 inch round ports needed?

Originally Posted by Bass911
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

7. ## Re: How many 4 inch round ports needed?

You would need atleast six, but realistically eight, 4" ports. My suggestion - build a slot port or use either 6" or 8" ports.

8. ## Re: How many 4 inch round ports needed?

Originally Posted by Dpc69ss
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.

9. ## Re: How many 4 inch round ports needed?

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.

10. ## Re: How many 4 inch round ports needed?

or just do eight 4" ports

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