Alpha RS-8/12 - Phase Switch

Phase switch (1)

In normal use the phase switch should be set to 0°. However, in rare cases it may be advantageous
to set the phase to 180° (e.g. if the subwoofer is far away from the front loudspeakers or in the event
of unfavourable acoustics in the room). Generally speaking: the setting where the lower base tone
area has a fuller sound is the correct one.