SRM450/SWA1501
SRM450
SWA1501
mixer
Stereo SRM450s with mono SWA1501 subwoofer
SWA1501/SWA1801
SWA1501 or SWA1801 added to existing passive system
BRAND X
PASSIVE
SPEAKER
SYSTEM
SWA1501/SWA1801
BASIC
SRM450
ADD TO
EXISTING
BRAND X
PASSIVE
SPEAKER
SYSTEM
existing
power amp
mixer