Box for 15" immortal

[Pimpdaddyq 10+ year member]

Hey, I am building another box for one of my 15" immortals.. and wanted to see if I have everything correct.. ive built many boxes, but am bored, ain't gonna work on it more til tomorrow, so I figured I'd ask..

Its 4.3 cubes before displacement, and I am going to do 2 4 inch PVC ports, that will be interchangeable. Tuned to about 34 I am going to have them be 12" long each, and tuned to 55 I am going to have them be 2 inches long each.. is this right? Or at least close? Let me know guys.

I normally do slots ALL the time, but wanted this to be interchangeable for higher tuning for comps, etc.. Thanks

Andrew

Click to read more...

 

[Pimpdaddyq 10+ year member]

bump for help?

 

[germanyt 10+ year member]

I am getting 3.8 inches long for 50 Hz. 2 inches for 59 Hz. That is based off of 4 cubes net. This is very high tuning, even for comps. perhaps something like 6.5 inches would work better. That would be closer to 42 hz. redo the math though. I am guessing how much volume the port and driver will take up.