Um i just bought the logitech x240 for $45! Yes I know its cheap, 2.1, small sub... but for the price id say nothing else beats it. I was going to buy th x540 but used the rest of the money to buy a game. The x240 has a small sub i believe 3 and a half inch. The sub box is small too and at the opening loads of air comes out witch is weird because the sub is small. My friend has an 8 inch sub and his box twice the size but half the air comes out. There is a lot of excursion. If i make a bigger box will it be any louder? Its kinda a stupid question I know but I was wondering from any1 who has made a custom box... So i want to make an 8 inch box and use the feat of the x240, will it be louder and hit harder???