The right front view of the Sony SRS xB31 speaker.

How to Bass Boost Sony SRS XB31 Speaker

You can change how loud the bass is on the Sony SRS XB31 Bluetooth speaker, by turning on and off its bass boost mode. When switched on, this mode makes the unit vibrate much more. Plus it adds a low rumble quality to the playing program, that travels pretty far from the unit.  So, for you boom lovers, this post shows how to bass boost this speaker, to get that extra umph in the sound.

You can control bass boost on the XB 31 in a few ways as follows.

    1. Use the EXTRA BASS button combination on the speaker itself.
    2. Work the bass switch in the Sony Music Center App.
    3. Make fine bass adjustments in the EQ section of the Music Center app.

We’ll cover all of these options below.

Working Bass Boost on the Sony SRS XB31 Speaker Itself

By default, this speaker has bass boost mode (EXTRA BASS) turned ON when fresh out of the box or after a reset. So any time you run this speaker, and you haven’t switched OFF this bass boost, then the Power  lamp glows white, as we see in the next picture.

Picture of the Sony SRS XB31 speaker -Power- lamp glowing.
The Sony SRS XB31 speaker -Power- lamp glowing.

But when the 31 is running, and this light is green, then that means that bass boost mode is inactive.

Picture of the green glowing Power lamp on the Sony SRS XB31 speaker.
The green glowing Power lamp on the Sony SRS XB31 speaker.

Now when active, bass boost also adds a bit of treble in addition to lots of extra bass to the audio output as compared to when this mode is OFF.

How to Turn Off Bass Boost with Speaker Buttons on the Sony SRS XB31

You can turn bass boost mode OFF by pressing and Volume Down and Play-Pause buttons at roughly the same time.  However, to avoid accidently pausing or starting music play, press the Volume Down button slightly before you press Play-Pause.

Picture of the Play-Pause and Volume Down buttons on the Sony SRS XB31 speaker.
The Play-Pause and Volume Down buttons on the Sony SRS XB31 speaker.

Then hold in both buttons for approximately three (3) seconds until the Power lamp changes color.  See the locations of these buttons as pointed out by the pink arrows in the last picture. They are the first and second buttons from the left on the top buttons panel.

Doing this deactivates bass boost and switches the speaker into STANDARD mode, which gives a flatter and less bassy frequency response. Now if your speaker doesn’t have as much bass as before, then you may have accidently switched it in to this STANDARD mode. So here we show how to get that bass back.

 How to Turn ON Bass Boost with Speaker Buttons

Note that if the Power lamp is green, then bass boost is not active.  So to enable bass boost, press and hold in the Play-Pause and  Volume Down buttons for about three (3) seconds until the light color changes to white. Bass boost resumes once more at that time.





How to Bass Boost the Sony SRS XB31 In The Music Center App

In addition to by way of the EXTRA BASS button combination on the speaker itself, you can also control bass boosting in Sony’s Music Center app too.

1. Install the Music Center App

So first, download and install this app on your source Bluetooth device (phone, tablet, computer, or media player). We did this on a test iPad Air.

Screenshot of the Sony Music Center app icon on iPadOS.
The Sony Music Center app icon on iPadOS.

2. Pair your Sony XB31 with This Same Device

We did this as we show next.

Screenshot of the iPadOS Bluetooth Settings page, showing the Sony SRS XB31 speaker as Connected.
The iPadOS Bluetooth Settings page, showing the Sony SRS XB31 speaker as Connected.

3. Run the Music Center App

Upon startup, Music Center looks for any compatible Sony products.  And since the XB31 indeed works with this app, the app does indeed find the speaker.  Then it displays the Home page for it as we see next.

Screenshot of the Sony SRS XB31 Home page in the Music Center App on iPadOS.
The Sony SRS XB31 Home page in the Music Center App on iPadOS.

4. Bring Up the Settings Page

Then, scroll the screen down to the Settings item at the bottom of the options list.

Screenshot of the Settings item on the Home page.
The Settings item on the Home page.

Next, tap Settings, and you’ll get the Settings screen, as we see next.

Screenshot of the Sound item on the Settings page.
The Sound item on the Settings page.

5. Visit the Sound Page

Tap the Sound option, pointed out in the last screenshot.  You then get the Sound page, as we see next.

Screenshot of the Sound Mode item on the Sound page.
The Sound Mode item on the Sound page.

6. Bring Up the Sound Mode  Screen

Tap the Sound Mode option that we see in the last picture.

Then, the Sound Mode page comes up, and looks as we see next.

Screenshot of the Preset Mode item set to STANDARD on the Sound Mode page.
The Preset Mode item set to STANDARD on the Sound Mode page.

Note that depending on which speaker model you’re working with, you’ll see different sound effect options on this page.  Thus the screen we show next is specific to the XB31.

Now on this screen, note that the STANDARD  option is active. While this setting is not the default after a speaker reset, we need to change this back to the default EXTRA BASS mode for maximum bass boost.  So we shall do so here.

7. Tap the Preset Mode Option

Touching this item brings up the Preset Mode page as we see next.

Screenshot of the STANDARD item checked on the Preset Mode page.
The STANDARD item checked on the Preset Mode page.

Note that the STANDARD option is checked.  So we will change this in the next step.

8. Change the Preset Mode to EXTRA BASS

Tap the EXTRA BASS option on that page, and notice that the check mark moves to this item.

Screenshot of the EXTRA BASS item checked on the Preset Mode page.
The EXTRA BASS item checked on the Preset Mode page.

9. Tap the Done Button

Touch this button to apply this selection to the speaker.  Find this button in the top right corner of the page as we show in the next shot.

Screenshot of the Done button on the Preset Mode page.
The Done button on the Preset Mode page.

Pressing Done takes you back to the Sound Mode page as follows.

Screenshot of the Preset Mode item set to EXTRA BASS on the Sound Mode page.
The Preset Mode item set to EXTRA BASS on the Sound Mode page.

Note that the Preset Mode option value is now EXTRA BASS.  Also you may notice more bass coming from the speaker.  Well, hope you like that, because we’re not done yet.  While this extra bass boost indeed gives you more bass, there is still additional bass to be had. For that, go on to the next step.

10. Bring Up the EQ (Equalizer) Page

Tap the BASS / MID / TRE option on the Sound EQ page. We highlight it next.

Screenshot of the BASS / MID / TRE item on the Sound Mode page.
The BASS / MID / TRE item on the Sound Mode page.

Touching this option brings up a three band graphic equalizer page.  Now by default, this EQ is set to FLAT for all frequency bands, as we see next.

Screenshot of the BASS / MID / TRE page with all sliders set to FLAT.
The BASS / MID / TRE page with all sliders set to FLAT.

But you will get maximum bass boost by moving these slider controls as follows.  For example, lower the Middle and Treble frequency bands to minimum, but raise the Bass one to maximum, as we show next.

Screenshot of the BASS / MID / TRE page with sliders set for maximum bass boost.
The BASS / MID / TRE page with sliders set for maximum bass boost.

When set this way, you get the highest amount of bass that the XB31 speaker is capable of producing. But be careful !

Warning

The drivers really thump when bass boost is active, and especially so when you adjust the equalizer as described above.  So be cautious in how loudly you play the 31 with the bass enhanced like this, to avoid damage to the speaker drivers. If the bass is crackling, tapping, or otherwise distorting, turn it down or readjust the EQ !

Conclusion

So we have now shown you how to get the most boosted bass from your Sony SRS XB31 mini party speaker.  So do enjoy this at your next bash !

Related Posts to How to Bass Boost Sony SRS XB31

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    2. How to Bass Boost Sony SRS XB21 Portable Speaker
    3. Bass Boosting the Sony SRS XB20 Waterproof Speaker
    4. How to Bass Boost Sony SRS XB40 Bluetooth Speaker
    5. Bass Boost for the Sony SRS XB30 Cordless Speaker

Other Posts About the Sony SRS XB31 Mini Party Speaker

    1. Sony SRS XB31 Battery Life, How Much Listening Time Per Charge
    2. How to Connect Sony SRS XB31 to an Alexa Device
    3. Sony XB31 Watts RMS Output, Input, Battery, Adapter…
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References for How to Bass Boost the Sony SRS XB31 Speaker

    1. Sony SRS XB31 Portable Waterproof Speaker Support Page, on Sony.com

Revision History

    • 2022-09-30: First published.
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