ProAudio SW18 User Manual page 6

DELTA 8.4-DSP/ 14.4-DSP – 1 x 3-pc Cardioid Sub Array [SW18-CSA]
All three SW18 subwoofers are wired using 4-pole speaker cables. The two
front-firing subwoofers and the single back-firing subwoofer are each driven
by one dedicated amplifier channel.
Two amplifier channels will be assigned.
DELTA 14.4-DSP – 2 x 3-pc Cardioid Sub Array [SW18-CSA]
All six SW18 subwoofers are wired using 4-pole speaker cables. The four
front- and the two back-firing subwoofers are each driven by one dedicated
amplifier channel.
Two amplifier channels will be assigned.
DELTA 8.4-DSP / 14.4-DSP
[SW18-CSA]
With ground coupling:
6
Front
Front
DELTA 8.4-DSP / 14.4-DSP
[SW18-CSA]
Without ground coupling:
Front
Front
Front