Symptoms
- Adjusting bass or treble sliders produces no audible change
- Sound preset modes override manual EQ adjustments
- Settings reset after changing inputs or power cycling
- EQ works on one input but not another
Likely causes
- CommonSoundbar is in a preset sound mode (like 'Movie' or 'Music') that locks or overrides manual EQMany preset modes apply their own fixed EQ curve regardless of manual slider changes.
- CommonEQ settings are input-specific and weren't changed for the active sourceSome soundbars apply different settings per input (HDMI vs Bluetooth vs optical).
- PossibleExtreme EQ changes are subtle at normal listening volumesSmall EQ slider movements may not produce a dramatic, obviously noticeable difference.
- PossibleFirmware bug affecting EQ applicationSome units have had bugs where EQ settings don't persist correctly.
- Less commonSpeaker/driver limitation at extreme settingsA soundbar's small drivers may simply not be able to reproduce extreme bass or treble changes audibly.
What to do
- Switch the soundbar to a 'standard' or 'custom' sound mode rather than a preset like 'Movie' or 'Music', which may override manual EQ.
- Confirm you're adjusting EQ settings while on the same input source you're testing with (switch and check both).
- Make more extreme EQ adjustments temporarily (e.g., max bass, min treble) to confirm whether any change is audible at all.
- Check the companion app, if available, for a separate EQ control that might differ from the remote/front panel controls.
- Update the soundbar's firmware to the latest version.
- Factory reset the soundbar if EQ settings seem stuck or unresponsive after other troubleshooting.
When to call a pro
If EQ adjustments genuinely produce no audible change even at extreme settings after a factory reset, contact the manufacturer's support as this may indicate a firmware or hardware issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.