When you line a sub with egg crate foam or other, does this reduce the internal volume size of a ported sub. If not no probs but if so how do you work it out.
Or will actually increase it?
I have found this eggbox case foam and am wondering if it is ok to use this to line my sub I will be building. They sell it in 30 and 50mm thickness. Could any tell me if there are any disadvantages to using the 30mm stuff over the 50mm or visa versa...