C-Bass

I'm going to run my 15 SSD in a 3.8 cuft box sealed. I haven't powered finished my setup yet, but when I do I'll be more than happy to report how it sounds.

I don't have any place I can get flared ports around here and it would take at least a couple weeks for someone to bring them to me. I'm trying to avoid waiting so long. Plus the wood is already paid for The total box dimensions is approx 4 cu.ft. sub is .17

After some more screwing around with numbers I'm even more confused. You mentioned 12-16 sq.in. port area. How did you get 36 sq.in for my box volume? If I have 3.8 cubes * 12 sq.in = 45.6 sq.in. Let's say I use the 36 sq.in. figure. The way I would come up with that is 6"x6" = 36 sq.in. Assuming my math is correct, that would mean I will have a port with the opening of 6" x 6" right?. If I plug that into my handy online port length calculator it gives me the length of 15.49" Let's assume for the moment all that is correct. In my scenario, using a 6" High port would come within 2" of the sub. From what I have read, that is too close for comfort. True or false? Let's assume again that it is too close. Say I use 6"x4", my port length (according to my online calculator) would have to be 8.59". Would that be correct? Again assuming that my calculations (more so the web site calculator) are correct, 6" x 4" (24 sq.in.) isn't enough sq. in of port. So let's say I want to put another 6" x 4" port to increase the sq. in. That should give me 48 sq.in. of port no? 2 x 24 sq.in. Again, assuming everything is correct so far, the two ports would give me near the recommended port area. So now I would just have to figure the length right? Dividing the box volume by 2 (2 ports) I get 1.9 cu.ft. That means I would have to have to ports at 4" x 6" x 24.22" Length?? I don't have that much room to work with these ports. My original calculations used much smaller ports, but as someone mentioned they don't look to have enough port surface. So I'm now more confused....

That helps a ton, I'll play around with the numbers and see what I can come up with

Thank you makes sense...I'll come back with some hopefully better figures

?????????? Any port calculator I use comes up with the same figures (obviously) so why is 18 sq in of port too small? What basis do you have for that comment?

so nobody has ever built a vented box for a 15 SSD? What about round ports??

I'm pretty tight on space. The front baffle is approx 36" W x 18" H with the sub in the middle. That leaves about 8" and change on either side of the sub for the port. the box is an odd shape and the front baffle will be made out of fiberglass This might give you a better idea

I need some help with the dimensions of my slot port before I go ahead and make a disaster. I have a 15" SSD in a 3.8 cuft box. I'd like to tune it to 33Hz as per Fi's recommendation Using one of those online calculators I got the following dimensions 3"H x 6"W x 5.22 L Does that look right? How would that be affected if I wanted to make 2 ports? Any help would be appreciated