How many ports??

[pacho 10+ year member]

One of my friends has a F-150 and he will be making the cutout from his bed to the cabin for his sound system. His daily driver will be 4 15"'s and when he goes into competition, he says he'll upgrade to 8 15"s. The box for the 4 15"s will be firing up in a vented box (vents also firing up), each sub will get 100 in^2 port area and my question is can we just use one port with 400 in^2 port area or do we have to separate the subs in separate chambers and make each port separate for each sub?? Also-when you're looking at the rear of the F-150, what would be the better route to go, firing the port up at the rear of the F-150 or firing the port up closer to the cabin?? Thanks for all responses.

Click to read more...

 

[bcarpenterfhl 10+ year member]

having a single port is fine. however, because of the size of the box, i'd recommend splitting it into two chambers. Each chamber would house 2 subs, and have its own 200 in^2 port.

PS, are you sure you can fit that big of a box in an f-150? because of that port area, the port will most likely be extremely long, taking up a lot of space.

 

[pacho 10+ year member]

2 chambers, so that would be 4 chambers if he used 8 subs?? We're making the calculations for the box right now and we'll probably go measure it later tonight or tomorrow afternoon.

-Edit-So would placing the port nearer the front of the bed or towards the rear of the tailgate achieve more decibels?

 

[pacho 10+ year member]

bump

 

[pacho 10+ year member]

bump-we'll be building the box this weekend so do ya'll think the slotted ports should be at the tailgate or nearer the front of the bed??

 

[pacho 10+ year member]

bump

 

[pacho 10+ year member]

bump