When I connect my MacBook Air to any wireless device, no matter if it is a speaker, AirPods or my BeatsSolo3, the audio is unbearable. The sound has a poor quality and I can hear cracking. I tried restarting my Mac, but it won't help.
MacBook Air 11", macOS 10.14
Is the Macbook Air always in the same physical location? If so, then it could be an adjacent device that is throwing out 2.4GHz interference. This could be a poorly shielded USB3 device, hub or cable. Or a WiFi base station.
You could try Safe mode, to see if there is software interfering
<http://support.apple.com/kb/ht1564>
What happens if you turn off your Macbook Air's WiFi? WiFi and Bluetooth often share the same antenna's in a Mac. This is an experiment, NOT a solution.
Have you tried any of these devices with a different Bluetooth source, such as your iPhone, iPad, etc... Do they behave the same? Do they behave the same if you put your iPhone next to your Macbook Air?
Is the Macbook Air always in the same physical location? If so, then it could be an adjacent device that is throwing out 2.4GHz interference. This could be a poorly shielded USB3 device, hub or cable. Or a WiFi base station.
You could try Safe mode, to see if there is software interfering
<http://support.apple.com/kb/ht1564>
What happens if you turn off your Macbook Air's WiFi? WiFi and Bluetooth often share the same antenna's in a Mac. This is an experiment, NOT a solution.
Have you tried any of these devices with a different Bluetooth source, such as your iPhone, iPad, etc... Do they behave the same? Do they behave the same if you put your iPhone next to your Macbook Air?
Poor bluetooth audio connection to any wireless device
