Finding Displacement/Area of subs and port

[vnsmanual]

would my best bet be to build the box to the biggest area i want to take up, which i think i worked out to be around 3 cubic ft, that way im not going down as much in size? so im not loosing as much of the low stuff? is there anything i can do to the smaller box to regain that lower stuff?

 

[acarmody]

Apparently stuffing it to 50% capacity with that polyfill helps it down low a bit. Can't personally vouch for it.

Yeah work out the max you can built it to be and use that.

 

[vnsmanual]

oh ok i have heard a little about poly fill before, where can you get it from and how much is it? if i build it to say 3ft cubed for example will the port size you mentioned above still be right? is 33 hz fine, and i use 6 inch pvc for my ports is that what the above one is desinged for.

Thanks heaps for your help!

 

[acarmody]

I got a big bag of polyfill from Spotlight of all places, I think it was for pillow stuffing or something.

This will help you, PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES

Remember enclosure volume does not include port or sub displacement.