I've just bought a 2nd hand REL Q100E which I'm now trying to set up. Problem is do I go by the Q100's manual which suggests using high and low level connections and adjusting roll-off and volume untill all is balanced (Nightmare!) or do I use only the low level connection, set all speakers to small and roll-off to maximum. I assume that if I go with the REL recommended setup that the front speakers need to be set to large? REL also state in the manual that using the High Level connection in conjunction with low level effectively allows you to position the sub anywhere in the room by simply adjusting the roll-off to compensate. Is this true? I have the following kit: Yamaha RX-V630RDS Mission 73 Fronts Mission M7C1 centre Mission M7DS rears.