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I’m hoping someone can help! My Sonos Sub Gen 2 seems to be malfunctioning. When playing deep bass, the sound is off—it almost sounds like one of the subs is blown. There’s a waffling or rattling sound, especially during heavy bass notes.

I’ve tried the usual troubleshooting steps like power cycling and reconnecting the sub, but the issue persists.

Has anyone experienced something similar? If so, did you find a fix? I’m looking for recommendations for repair shops that specialize in Sonos products or, if possible, parts that could help with a replacement. I’m in Baton Rouge, LA, but any advice would be appreciated!

Thanks in advance!

I’m not aware of any repair facilities operating in the US. SONOS does not sell parts. We see very few complaints here about SUB issues. Many reported issues are associated with foreign objects inserted by kids, pets, and rodents. I’ve never seen any reports, but I can imagine a snake enjoying the warmth inside. Check the web for DIY experiences.

Consider calling Sonos support they might be able to help you get a replacement if you haven't opened the case.

Update/Resolution: Case Closed
Posting this to close the case and clear up the mystery. Turns out the distorted/blown sound issue was caused by a kid’s toy that had fallen into the port. Once it was removed, the sound went back to normal. Nothing was actually blown—just a strange obstruction. Thanks to everyone who offered help!

I'd suggest a Sub port cover, a SoundSkin cover or what I did which was to make a speaker grill cloth Sub cover. Way cheaper than the SoundSkin a d took under an hour.

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