I'm having the same trouble. The manual says (helpfully!!) "experiment". Is there a general rule of thumb? For example, do they sound better in a corner, an open space, away from other furniture or what? I know it's matter of suck-it-and-see, but to be honest, by the time I'm at position 3, I've forgotten what it sounded like in position 1 and always have a nagging feeling it was better somewhere else!! It's got the woofer at the front.