18 Oct 2022, 01:28
so i want to build a speaker box for 2 alpine s-w10d2's but the only problem i have is where it gives total volume and useful volume is the useful volume the net volume or what?
27 Oct 2022, 18:34
I have the same issue, anybody have an answer? My sub is ideal sealed enclosure 1.25 so am I targeting that as total or useful?
27 Oct 2022, 21:57
I manually calculated mine after getting the 3d drawing. It's useful volume is the one that matters, the "enclosure volume". I have no idea where they are getting the "total volume" or what that is.
useful volume = Vb = internal net volume = the volume which "makes the sound", total volume is calculated by: internal net vol + displacements (ports, sub baskets, braces, etc...) + additional volume by material thickness
3 Dec 2022, 17:35
*Total Volume is overall area in cft.(ft³) or cin.(in³) available that your enclosure will occupy.
*Useful Volume is total ft³ or in³ within the enclosure - net volume, speaker displacement, and port displacement combined.
*Net Volume is the "Vb" the speaker requires not counting it's displacement and port displacement