I have actually used both #1 and #3, and I strongly prefer the wider room (my present house). The narrower width caused more extreme nodes along the center axis resulting in a suckout in the upper bass/lowerr midrange region. The wider room is more neutral.
It's quite possible the same L x W dimensions with a 9' ceiling would be even better. I need to figure out how to raise my ceiling.
It's quite possible the same L x W dimensions with a 9' ceiling would be even better. I need to figure out how to raise my ceiling.