This post shows how to pair Sony speaker SRS-XB40 Extra Bass portable model to common wireless BT devices. E.g. These include the Apple devices like the iPhone, iPod Touch, and iPad. This routine also works for Android base devices as well. So these include Samsung and LG phones, as well as Amazon Fire tablets.
How to Pair Sony Speaker SRS-XB40: Step by Step
With your speaker OFF and the power button dark, run through these directions to pair it. We use an iPad Air tablet for this demo here.
1. Go to the Home Screen on your Source Device
Firstly, press the Home button to reveal the smart device’s Home screen.
2. Find the Settings App
So we find ours on the second page of the Home screen.

3. Bring up the Settings App
Thirdly, touch the Settings app icon.
The smart device then shows the first page of its settings.
4. Go to the Bluetooth Settings Page to Continue with How to Pair Sony Speaker SRS-XB40
Then the Bluetooth Settings screen displays as follows. Note that our Bluetooth is ON here. But since our speaker is currently OFF, it cannot be in Bluetooth discovery mode. So it does not show up in the Other Devices list. Also, we don’t see it since we’ve never paired it with this mobile device before.

5. Turn On the XB40
So turn on the speaker by quickly pressing its Power-Pairing button.

The unit then powers up, and its Power-Pairing button glows white.

But since our tablet does not know about this speaker, the SRS-XB40 will not pair with it automatically.
6. Put the XB40 in Discovery Mode
Then to see your XB40 on your device, place it into Bluetooth discovery / pairing mode. So to accomplish that, press and hold the Power-Pairing button. Release it when you hear the rising pitch beep sequence. Also the speaker announces, “Bluetooth pairing,” in a lady’s voice.
In addition to the voice announcement, the Bluetooth Status lamp begins flashing fast white.

7. Find the Speaker on your Mobile Device to Continue with How to Pair Sony Speaker SRS-XB40
See the screen shot next.

8. Now Pair with the XB40
So tap the speaker entry in the Discovered Devices list.
Your mobile device then pairs with the speaker.
Then the the Bluetooth Settings screen might then change to look something like the following. Note the now-connected SRS-XB40 entry in the My Devices list.

9. Done with How to Pair Sony Speaker SRS-XB40 !
At last, we have now successfully paired the XB40 BT speaker with a common mobile tablet device.