speaker test shows left and right swapped on my soundbar
Swapped sides on a soundbar usually come from a TV audio setting or a mirrored mounting. Check the TV's sound mode and the bar's orientation, then…

Stereo Balance Auditor at Sound Test
Kriti Desai is the Stereo Balance Auditor on the Sound Tester Audio Team. Dedicated to validating left-to-right channel panning balance and locating hardware wiring faults in mobile headphone jacks.
Kriti Desai is the Stereo Balance Auditor on the Sound Tester Audio Team. Dedicated to validating left-to-right channel panning balance and locating hardware wiring faults in mobile headphone jacks. Connects with global audio builders on Mastodon and LinkedIn. On Sound Tester she answers one-sided audio, balance and speaker polarity discussions, and checks headphone jacks and wiring with the Left Right Test.
Swapped sides on a soundbar usually come from a TV audio setting or a mirrored mounting. Check the TV's sound mode and the bar's orientation, then…
Thin, hollow sound with a vague centre after rewiring points to reversed polarity on one speaker. Match red to red and black to black on both…
If the headphones work on a phone but only one side on the PC, the PC jack or its plug fit is the problem. Reseat the plug, then check Mono Audio…
If swapping the speakers did not change it, the fault follows the cable, the jack or a setting. Test another port and check the balance.
A balance that resets after restart is usually enforced by a driver app or an audio enhancement. Check the audio control app and disable Enhancements.
Out-of-phase speakers cancel bass. Check red-to-red, black-to-black on both speakers, and listen to a mono signal that should sit in the center.
If only some videos play on one side, the video itself is mono or panned. The Left Right Test will show whether your setup is fine.
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