Thanks ching. I also wanted to put it at lefthand corner but the space is not enough.. The problem is I got my furniture confirmed before upgrading my equipments including sub. I also guess putting it there can result in better bass quality. But no method now la
Sorry that I can't answer you since I haven't done the comparison directly. I've used spikes for my old speaker but the heigh is not suitable. I changed to use the high dense foam (mopad) shortly after that. Mopad is good since it can not only add the height but also allow me to adjust the tilt angle with some options(8 or 16 degree).