1. On your macOS computer, Go to System Setting >Bluetooth and turn on Bluetooth.
2. Press the PAIR button ONCE on the back panel of the CPA loudspeaker, the BT/TWS light blinks in BLUE when it’s in the discovery mode.
3. When a nearby CPA-Series speaker is detected, add the CPA loudspeaker and get it paired.
Alternatively, you can go to the top taskbar to Show and Add a Bluetooth Device
4. Once your Bluetooth connection is all set, the BT/TWS light on the CPA loudspeaker turns solid BLUE.
Now, you'll see the CPA Series speaker on your Windows PC's Bluetooth menu.
Further Reading:
Bluetooth Connection Problems
https://www.carver-pro.com/faq/bluetooth-connection-problems