Solved! Help!!! The subwoofer has strange sound

Solution
I'd contact their support, could be something loose in the sub, or it's not on a stable surface or something else is rattling in the area. Also, I would find a place to hid that silver disk player or whatever that is on the table, it's really obvious and a bit out of place among the other colors and design you have.
I'd contact their support, could be something loose in the sub, or it's not on a stable surface or something else is rattling in the area. Also, I would find a place to hid that silver disk player or whatever that is on the table, it's really obvious and a bit out of place among the other colors and design you have.
 
Solution
Apr 18, 2020
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I'd contact their support, could be something loose in the sub, or it's not on a stable surface or something else is rattling in the area. Also, I would find a place to hid that silver disk player or whatever that is on the table, it's really obvious and a bit out of place among the other colors and design you have.
You mean you've actually contacted Edifier support?