I remember reading somewhere on here that if you build a box with 1 chamber for more than 1 sub, you need less volume to get the same results. It seems the guy said something like 1's sub is norma;, 2'nd is .25cu. less, 3rd is .5 less, and 4th is .75 less. So, if I had 4 15"s that needed 2cubes each, the box would have to be 2+1.75+1.5+1.25=6.5cuft, correct?

There were no comment's on what he said, so is this true? anybody? -- Oh yea- for sealed enclosures. I'm really tight on space, so if this is true, that would be great.