SHORT ANSWER
In a nutshell, when I'm out of range the music does not start playing through the speakers of the connected device.
LONG ANSWER
I own a pair of Bose Bluetooth headphones that I've been using with an iPhone, iPad, MacBook Pro and an iMac. I've had these for about 15 months and have been very happy with them.
The pair I own maintain a charge for about 7hrs and are able of being paired with 8 different devices. They can also be connected to two devices at the same time!
Now that I've provided that context, my comments below will make more sense.
If I connect my Bose Bluetooth headphones to my iPhone for playing music they work great. If I move beyond a certain range, the music is no longer heard on the headphones, but as far as the iPhone is concerned the music is still playing. During this period, the music is not heard from the iPhone speaker. If I move the headphones further out of range so that the connection is totally lost, then the iPhone stops playing music altogether (i.e. the pause button becomes a play button again).
However, I have had another issue that may or may not be relevant in your case. I also use my headphones for long phone calls when I work at home (usually 1 or 2 days per week). This works fine, however, if I happen to have another device within range that is also paired to my headphones (remember they can be paired to 8 devices, and connected to two devices simultaneously) then that other device may connect to my headphones. Once that happens, if I get a notification or if the other device was already playing music or a video, then this causes some sort of weird interference with my call. This interference was only happening when I was on a call, not if I was using them just to listen to music.
Now, this issue may be peculiar to my set up as there are lots of variables involved, such as:
- the model and specs of headphones
- the model and specs of all the paired devices
- how many devices you've paired
- whether these devices are in range
- what these devices are doing at the time
In my case, once I figured out what the problem was, I chose to 'forget' my headphones from the other devices and now only pair/connect to them on my iPhone (as that's what I use the headphones with for 95% of the time). And if I need to connect them to another device for a while, I just connect them then. This has worked very well for me, as I rarely need to use them with another device.
I hope this helps!
You can consider setting your Mac not to auto-connect to Bluetooth headphones, using this command in Terminal:
sudo defaults write /Library/Preferences/com.apple.Bluetooth.plist DontPageAudioDevices 1
This will not interfere with Apple Magic Mouse, Keyboard or Trackpad. Only audio devices will not be auto-connected.
Best Answer
As per apple's policy , when you cross the bluetooth limit of your headset your system will be automatically switch the audio output into the internal speakers.Mostly in platforms are like that.
But there are many third party apps like , Breakaway is a utility that will pause/resume iTunes for you whenever you unplug and/or plug in your headphones. You can now walk away from your computer for a moment without missing a beat of your favorite song, or disturbing anyone with your speakers coming on.