quick question

[wdingus 10+ year member]

I want to port my 2 orion 12's. Does it matter if I use one 4 inch port or should i be using 2. Tuning to around 30hz

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[acold7dusta 10+ year member]

4" will flow more air but will need to be longer to tune to 30hz. is this a slot port or a round port?

 

[Trixter 10+ year member]

i would guess it's a round port since he's calling it a 4". definitely go with two, you'll need the area.

if your box is already built, be careful using a port calculator to figure thier lengths. calculators don't account for port displacement. use it to get the length and then figure out the port's volume. then subtract that from the original box volume and use the calculator again. make the ports to this length. need help, lmk.