Originally Posted by Radknight
I ... but you can work out the volume is to take big bubbles or popcorn for packing, fill up the enclosure as much as you can then transfer the bubbles/popcorn to a square cardboard box and then measure the volume of the box (h x w x d). Then go to different quality subwoofer models and see which one meets your volume requirements.
That sir, is an excellent method. Thanks for the tip... I'm going to use it in my boat