Sony Active Subwoofer Black 120V 20W Home Theater Speaker System SA-WCT390 Subwoofer ONLY I have not used this unit. When I plug it in, the light on the front lights up and blinks like it is supposed to do when it is trying to find the soundbar connection, so it appears to be working. There are some scratches on the unit. See the photos for details. my understanding is this only works with the soundboard (not included)
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