I have just had installed a new h/u amp and sub+box One of my friends had a look at the sub and said it was facing the wrong way. The way it was fitted is within a ported box, within the boot, the box hard against the back of the back seats, with the speaker facing up at the parcel shelf. Friend claims that the box is correctly against the back of the back seat but that the speaker should be facing the tail of the car, he claims that this will sound better as the driver will use all the open space infont of it to produce better base Is this true or nonsense ???????