[Omnia 7 General] mchabr:
No need to contact Microsoft, they would not help you anyway. First of all they have another Prio in the Moment, which are the two small updates coming. And second of all, its not really their fault. The OEM or Retail Guys, are responsible for a correct Audio setup. After I could not find anything on the Net I was playing with it today for the second time, and figured it out step by step. Now it looks so easy, but took me almost a day, without any document. Its true that the Headphones are a bit lower than the external Speakers. But I am sure you find your solution here as well:

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So my friends. I hope you are prepared for the mystery called "Sound Tuning" to be solved.Everybody just copied the same wrong steps, from the same guy.

1. Leave the ID untouched, if you change it. The OS will not open your sound profile number "7". Just basically never press the "write" button.

2. Here it started to be wrong. He says change to 10, get get get start stop done.

Its possible that he had under Profile number 10 higher Values which made his device louder. It seems depending on the Operator or something this already a preserved different Profile... Nevertheless its wrong tis that that the first number in the form is increasing the Volume. Its just a Profile, to be more granular and guess prepared for the future. You will achieve the same results in Profile 7.

There is no reason to do so, but if you want Switch to 8 and insert new Values here.

2. So what really matters are the fields behind the Profile numbers.

3. System Gain sounds like OS sounds, I haven't tried yet. No reason so far.

It should be something where you cannot change the Volume by using the Buttons, because per default there is no Min Value defined. You will figure it out, maybe the cam or something I don't know.

4. The important one is Device Gain Max/Min

It does not matter so much how big the values are but how much you subtract in the Min field. This was the issue before. The number was not great enough. If you, eg. 1600 -700 is still 900. Max - Min should get an result closer to zero.

Thats why the lowest Level was too loud. Because it would drop only to about 40% of the Max Volume.

5. You might be a little bit disappoint because the OS seems not be able to handle the values on the same granular Level. So even if you set, Max:1500 and Min: -1500 or even -2000 it will not help

You can play with it, maybe you find out more. So it looks like the OS is not able to interpret lower then lets say 15% or off.Depends also on the Music your are playing. Maybe I am wrong and we get even better results when testing different settings with the System Gain settings too. Try it...

Even if not there is a big difference, for phone and Music Speaker.

If its some flaw or restriction, it can be changed later

6. Verify that the Bottom Switch next to audience.cfg is Set to ON

Otherwise its not getting saved after reboot. That why we had different feedback here.

I recommend always to reboot after changing the settings. Its not taken the settings correctly without it.

7. If Switch is set to On, just press the "set" Button for "Device Gain".

8. If you want you can leave the Switch to On. Or switch it to off afterwords.

After Reboot you are done.

9. Pressing the start and stop buttons will have no effect on your Speaker Volume, as described in the first Post on the Net. I just figured out when pressing start, you activate the Mic and the Speaker and you will hear yourself. I assume it helps you to determine if your settings are too Loud so that you that typical Acoustic Echo, when Mic to close to speaker...

10. So if at least parts of my thoughtsare true, then the middle one "class" could be for 3rd Party apps or something. As it is not set up per default in the moment, It makes no sense to play with those settings. A developer could create Multimedia Apps and Games, where you could modify the Volume of the Game Profile without changing it for the rest of the WP7 System Apps like its happening in the moment. I could imagine this would be an ideal small change they could introduce as rumored in Jan-Feb.

Have Fun and let me know if it works. I really tested it many times, so don't tell me it does not work :-) And don't tell me you have found the answer already somewhere else. Because I haven't until now. If you sooner or later find the real Document or Whitewater, please share. I have found only the resource Whitepaper, but there was no Audio Tuning in it.

MC

P.s. Maybe something is crap, maybe I explained it wrong. Just ask me, when something is unclear. As we all have Omnia 7. It should works fine, basically the same on all WP7 devices I guess.