Sound from the Subwoofer is too low.

What is the sound of the Subwoofer?

Since a Subwoofer is designed to play bass sounds, when you play an audio source that has fewer low frequencies, the sound from the Subwoofer can be harder to hear. To make sure the Subwoofer outputs sound properly, try playing an audio source that will make it easy to confirm the bass sound, such as a movie.

Make sure the Subwoofer is connected and turned on

Make sure that the Subwoofer is properly connected to the Soundbar, and that the Subwoofer's indicator lights up.

Follow these steps to troubleshoot the issue

1. On the remote control, press the + (plus) button of the SW (subwoofer volume) to turn up the subwoofer volume.
   Note: The button name varies depending on the model (subwoofer volume, BASS, etc.).
2. If Night mode is set to ON, set it to OFF.
   Note: For details regarding Night mode, refer to the product manual.
3. For BRAVIA Theatre Quad (HT-A9M2), HT-S2000, HT-A7000, HT-A5000, and HT-A3000 models, check the following settings:
   • HT-A7000, HT-A5000, HT-A3000: Make sure the Sound Field Optimization is complete:
     1. On the remote control, press the HOME button.
     2. Select Setup.
     3. Select Advanced Settings.
     4. Select Speaker Settings.
     5. Select Sound Field Optimization, and follow the on-screen instructions.
        Note: For details, refer to the Help Guide.
   • HT-S2000
     1. Using the Sony | BRAVIA Connect or Home Entertainment Connect app, select Settings → Sound Settings.
     2. Select Speaker position and volume level settings → Volume level, and then adjust the Subwoofer volume level.

Play the test tone or built-in demo music.

Try to play the test tone or built-in demo music to verify if any sound is coming out of the subwoofer:

• HT-A7000, HT-A5000, HT-A3000
  • Use the Test Tone function:
    1. On the remote control, press the HOME button.
    2. Select Setup.
    3. Select Advanced Settings.
    4. Select Speaker Settings.
    5. Select Manual Speaker Settings.
    6. Select Test Tone, and then select On.
       Note: Select Off to end playing the Test Tone.
  • Play the sample music following any of the steps:
    Note: To stop the playback, press the same button you have used to play the sample music.
    • Press and hold the input select button on the bar speaker for more than 5 seconds to start the playback.
    • Press and hold the MUSIC SERVICE button on the bar speaker for more than 5 seconds to start the playback.
• HT-A9, HT-X9000F, HT-Z9F
  1. On the remote control, press the HOME button.
  2. Select Setup.
  3. Select Advanced Settings.
  4. Select Speaker Settings.
  5. Select Manual Speaker Settings.
  6. Select Test Tone, and then select On.
     Note: Select Off to end playing the Test Tone.
• BRAVIA Theatre Quad (HT-A9M2)/BRAVIA Theatre Bar 9 (HT-A9000)/BRAVIA Theatre Bar 8 (HT-A8000)
  1. On the remote control screen of the Sony | BRAVIA Connect app, select Settings → Sound Settings.
  2. Select Sound Output Check and select Test Tone.
• HT-S2000
  • Use the Test Tone function:
    1. On the remote control screen of the Sony | BRAVIA Connect or Home Entertainment Connect app, select Settings → Sound Settings.
    2. Select Speaker position and volume level settings and select Test Tone.
  • Play the sample music following any of the steps:
    1. Press the INPUT button or input select button on the Sound Bar for 5 seconds to play the built-in demo music.
    2. Press the INPUT or input select button again. The built-in demo music will stop and the Sound Bar will return to the TV input.
• HT-S20R, HT-S40R
  1. On the remote control, press the MENU button to turn on the front panel display menu.
  2. Select SPEAKER → TEST TONE → ON to output the test tone from each speaker.
  3. Press the MENU button to turn off the menu in the display.

  Notes:

  • To select the desired item and setting, press ↑ (upper), ↓ (lower), or ENTER repeatedly. You can return to the previous layer by pressing the BACK button.
  • While USB input is selected, the TEST TONE will not be output even though it is set to ON. Select an input other than USB to ensure the TEST TONE is played.
  • To turn off the TEST TONE, select SPEAKER → TEST TONE → OFF.
• HT-S400
  1. Press and hold the TV button on the bar speaker for 5 seconds to play the built-in demo music.
  2. Press the TV button again. The built-in demo music will stop and the Sound Bar returns to the TV input.
• Other models
  1. Press the INPUT button or input select button on the Sound Bar for 5 seconds to play the built-in demo music.
  2. Press the INPUT or input select button again. The built-in demo music will stop and the Sound Bar returns to the TV input.

Related article

If the issue is not resolved, refer to the There is no sound coming from the Subwoofer article.