Thought I'd compile all the registry hacks that I've found to improve bluetooth sound quality and volume on my Mogul/WM6. Sound quality for bluetooth seems to be a major issue with the mogul - so here's everything to try all in one place.
Please note that I just found these on other forums and take no responsibility for loss of hearing related to these hacks. Remember to always back up your registry before making any changes so you can go back if things get messed up. If you don't know how to back it up you should not be messing with it...if you want to risk it I use PHM reg editor (
http://www.phm.lu/Products/PocketPC/RegEdit/).
1-Change Bluetooth headphones from mono to stereo:
HKLM\SOFTWARE\Microsoft\Bluetooth\A2 DP\Settings\UseJointStereo
(DWORD:0)(Default is 1)
[
joint stereo is really mono]
2-Increase the bitrate for A2DP:
HKLM\Software\Microsoft\Bluetooth\A2DP\Settings\Bi tPool (DWORD:50)(default is 30)
HKLM\Software\Microsoft\Bluetooth\A2DP\Settings\Ma xSupportedBitPool (DWORD:50)(default is 30)
[
I actually set these both to 80 without issues.]
HKEY_LOCAL_MACHINE\Drivers\BuiltIn\BtA2dpSnd
Add Key 'Priority256' (DWORD:60)
[
key was not on my machine by default and I'm not really sure what this does]
3-Increase Audiogateway capability:
HKLM/SOFTWARE/Microsoft/Bluetooth/AudioGateway/Capability
(Dword:69)(Default is 37)
[
I'm assuming this is a bitrate setting, but not sure how this differs from those above]
4-Change the Bluetooth channel from the default:
HKLM\Softare\Microsoft\Bluetooth\Device
From there open the subfolders and find those labeled channel. The DWORD key value is the channel number. Change the number to something other than the default.
[
i've only tested up to channel 7 because I'm not sure how many channels there are. This seems to have improved issues with interference and intermittent drops, but these issues seem to have more to do with where the device is in relation to the headphones than anything else. You'll have to experiment to see what works best with your gear and environment.]
5-Increase the Bluetooth microphone sensitivity:
HKLM\Software\Microsoft\Bluetooth\AudioGateway\Mic Volume
(DWORD:10)(Default:5)
6-Increase Bluetooth earpiece volume:
HKLM\Software\Microsoft\Bluetooth\AudioGateway\Spk Volume
(DWORD:10)(Default:5)
[
again experiment to see what works best with your headset and environment]
I'll keep testing as long as I'm commuting. Let me know if you know what some of these do or your expereience with them and I'll update as I get more info.