This post shows how to pair the Sony SRS X5 mini Bluetooth speaker with common wireless devices. E.g. These include the iPhone and the iPad line of Apple phones, media players, and tablets. You can also pair this speaker with Android devices using a similar procedure.
How to Pair Sony SRS X5, Step By Step
With your X5 switched OFF (power lamp is dark), run through these directions to pair it to your source BT mobile device. We’re using an iPad Air tablet for this demo.
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, as shown in the next step.
4. Go to the Bluetooth Settings Page to Continue with How to Pair Sony SRS X5
Then our Bluetooth Settings screen displays as follows. Note that our Bluetooth is ON here. But our SRS X5 is currently OFF. So it cannot be in Bluetooth discovery mode. Thus it does not show up in the Bluetooth devices list. Also, we don’t see it since we’ve never paired this speaker with our mobile device before.

5. Turn On your Sony SRS X5
So turn on the X5 by quickly pressing its Power button.

The speaker then powers up. Plus, its status lamp lights up green.

But since our iPad does not know about this speaker, the X5 will not pair with it automatically.
6. Put the SRS X`5 into Discovery Mode
So to see your Sony SRS X5 on your device, place it into Bluetooth discovery mode. To do that, press and hold the Pairing button. Release the button when the speaker makes two high beep sounds, and the Pairing lamp starts fast flashing white.

Usually takes one to three seconds to enter discovery mode. Find the Pairing button as shown above. It’s on the top of the speaker in the row of buttons closest to you as you face the front of the speaker. And it’s the second button in from the left.
7. Find the Speaker on your Mobile Device to Continue with How to Pair Sony SRS X5
See the screen shot next. We find the X5 test speaker there in the Other Devices list.

8. Pair with your SRS X5
Tap the listed speaker in the discovered devices list.
Your mobile device then connects with the SRS X5.
E.g. The source device’s Bluetooth Settings screen might then change to look something like the following. Note the now-connected SRS X5 entry, as pointed at by the green arrows in the next screenshot.

9. Done with How to Pair Sony SRS X5 !
At last, we have now successfully paired the X5 with with a common mobile tablet device.