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Humming, buzzing or rattling noise heard from product | SoundLink® Flex SE Bluetooth® speaker
If you hear an unexpected noise from your product:
Try the following:
Be sure the rattling noise is not something on or near the system.
A loose item on or near the system may be vibrating when certain frequencies or volume levels are played. Secure any loose items or move the system or items to another location if the system sound is causing nearby items to rattle.
Determine if the rattle is from movement of the speaker enclosure or from audio playback
If the rattling occurs when the product is moved or shook, there may be a foreign item within the enclosure. If the rattle only seems to occur sound is produced by the speakers, see Poor sound quality from product.
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more information, see Resetting your product.