“Mine periodically make a poping noise from the subwoofer. Has anyone else experienced this? I wonder if it's interference with other bluetooth/ frequencies?”

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• Hello Drusiph, A popping noise from the subwoofer indicates a power mismatch in the circuit. The popping noise occurs as the amplifier tries to produce more voltage than it can to meet the demands of the subwoofer. A power mismatch is not the only issue that causes a popping noise from the subwoofer. The noise may also be due to loose connections in the circuit. If this noise persists, than please visit this link: https://support.logi.com/hc/en-us/articles/360055951254-Warranty-Z407-Bluetooth-Computer-Speakers-with-Subwoofer-and-Wireless-control. This is the link to the 1-year limited hardware warranty that the Z407 comes with. Hope that this helped and that all is going well. Best Regards, Richard from Logitech

  Answered by Logitech 5 years ago

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• This is a recursive issue amongst the product. I started experiencing the same issue yesterday and I returned the system to exchange for a different one. Unplugging the system from power for a second is a temporary fix, but my concerns for the longevity of the system led me to replace it.

  Answered by Mika 5 years ago

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• My sub hisses when I come back to play music after idle time. I have to unplug the sub and plug it back in to get it working again. Really annoying. Probably going to have to return these as it seems like a product defect. Should have known not to buy Logitech again after my z623 speakers died in a little over a year. Sound systems are not Logitech's strong suit it seems.

  Answered by TVChamp 5 years ago

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• Mine does this sometimes. Haven't found a reason/solution, though it does seem to stop after a while.

  Answered by alek 5 years ago

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• I this problem as well. Sometimes after 30 min or so it goes away. Wish i could teturn but was givin as gift so no way to prove warranty

  Answered by Megan 3 years ago

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