Design issue

[Joe X]

On 1/5/2018 at 9:16 AM, AndriusLT said:

Hello, I am making a dual 12 inch sub box with one square port and I wanted to ask how should i measure the port pic:

Correct me if am wrong at measuring port in the picture.

 

Just a visual of how the T shaped port needs to be done:

 

 

 

[AndriusLT]

Okay guys so correct me if I am wrong. The port length in the picture is 54.10 cm + 16.10 cm x 2 = 86.30 cm ?

[ckeeler11]

Would not be times 2. total would be 70.20.

[AndriusLT]

Okay so all port length would be 54.10 cm + 15.90 cm = 70 cm ?

And also from where should I start measuring the port if it is angled?

[ckeeler11]

How drastic is tha angle? if there is a small difference from top to bottom then measuring from the bottom will be fine. If there is a significant difference from top to bottom I would measure from the middle.

[AndriusLT]

Okay will measure from the middle, but have I calculated right? (All port length)

[ckeeler11]

Yes but measuring from teh middle the front to back port will be shorter so you will need to add some to the "T's" to maintain the same port length.

[AndriusLT]

Thanks for the information its very helpful. One more thing is it okay if I put the box close to the back seats (that's why I made it angled) even if the subs are facing backseats and port facing ski pass (Ski pass will be open all the time). As I understand everything will fire through the port into the cabin so I should not worry about drivers vibrating the seats? Or should I move the box back a little bit so the subs would have some space?