Question Yamaha YSP-2700 subwoofer "disable"

Dec 6, 2019
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Hey guys, I have a Yamaha YSP-2700 and everything was OK in the last 1 year but when I turned on the system today, the subwoofer had no sound. It is connected to the center (wireless) but when I try to change the level of the subwoofer it says "disable".
I red the manual and I checked out on the itnernet but I have no clue what happened and what should I do. Maybe you can help me out.
 

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