potential bluetooth volume fix
 

according to http://msdn2.microsoft.com/en-us/library/ms880945.aspx there are 2 registry settings that can control the volume of bluetooth headsets.

adding the \HKLM\Software\Microsoft\Bluetooth\AudioGateway SpkVolume=0xf(15) value may improve it (15 seems to be the max, it gets reset to that if set any higher). However, that's not how I ended up fixing my own motorola HS850; somehow by re-pairing my headset to another device (my macbook), it fixed the way too low speaker volume.

My best guess is that the max volume gets set during pairing by way of http://msdn2.microsoft.com/en-us/library/ms881893.aspx The volume of the headset's own beeps seemed to be affected also, including its max volume beep. I haven't been able to re-mess up my bluetooth volume, though, so I can't say for sure if any of this explains it, but it might be worth a try. I haven't had a chance to experiment with the mic volume setting yet.

anyone else try this and notice a difference? my bluetooth is so quiet i can barely hear the person on the other end.

worked for me (6800 and s9s)
 

did this on my mogul - set both to 10 - and volume improved on both ends.

check out some of the other reg hacks I found but remember to back up and that you're testing em at your own risk...

edit: correct link: http://forum.ppcgeeks.com/showthread.php?t=7715

bump.

am i the only one with a low low bluetooth headset volume? tested 3 headsets and none are as loud as on any other phones i own (8525, vx8550, vx9900, 6700)

I have tweaked these registry settings. I have a nH700 BT.

I have pushed SpkVolume to 15. Might notice a small difference.

I pushed MicVolume to 10 and people said I was way to loud and distorted. I backed this off to 5 and that seems to be better.