Top equipment! MacBook soft modification needed!

The sound If you are the Belkin from MacBook fed initially very poor and crackling!
With the right settings but (see below) it sounds on studio speakers as good (or bad :-) as directly via mini-jack cable. No high-end sound it, but quite acceptable.
The delay of the Bluetooth transmission therefore varies in the range 100- 400 ms relatively quickly.
The audio coverage of the MacBook Bluetooth is unfortunately limited (approximately 4-6 m clear line of sight) for it, the Belkin but nothing.
If the signal times tears off (by walking around, etc.) there is a misfire, but as soon as the reception is made (within 15 sec.) Again goes the music continues immediately. The gap is acknowledged but briefly faster playback (drone) of the audio material, to the receiver and transmitter in line again. That sounds something like this as you would a record briefly nudge a little.
During operation with good connection but I have still not found any audible speed and pitch differences.
Provided the technical conditions: buy recommendation!

I wear times together what the Internet crisscross stand and give a quick guide to styling the Bluetooth interface of the MacBook ..
For a top sound when used with my MacBookPro (Snow) were as previously described strongly following settings on MacBook necessary:
1. Turn off Bluetooth
Quit 2. iTunes or other audio programs
3. Terminal start (in Utilities) and following (quietly every 6 rows in one go copy & paste) on the command line and press Enter:

defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Max (editable)" 80
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 48
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool (editable)" 40
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool" 58
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Max" 58
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Min" 48

4. Start the computer again
5. Enable Bluetooth and the Belkin as an audio output device to activate ..

If all goes well it should sound better and cracking sounds clearly. In order to be absolutely sure you read the settings with the following line in the terminal and check whether they have been retained:

defaults read com.apple.BluetoothAudioAgent

(If the selected values ​​are not compatible with the Bluetooth unit, set automatically to default back! I tried a bit and the abovementioned values ​​have in my works beautifully with the Belkin and were maintained automatically.)

Background: Apple has apparently made the basic settings for audio via Bluetooth to low quality. Why do I not know well ..