I sent this to my dealer already, but I also wanted to post it here to see if others had any ideas. Here is the description of the problem with the volume slider for the Sony HT-ST9 sound bar driver (IP based). The sound bar uses volume range from 0-50, while the Control4 driver scales this to 0-100 for display purposes (i.e., the number displayed on the slider's button). Therefore, for any particular volume level set on the sound bar itself (for example 20), the Control4 slider will show 2x, or in this example 40. The problem is that when you go to change the volume, the driver then switches to use the Sony scale (0-50) so when I grab the slider to slide it from the currently displayed volume (say 40) it immediately tries to set the volume to the actual Sony level of 40, instead of where it should be starting at, which is 20.
The result is the volume jumps up 2x momentarily until I can slide it down to 25 (again, as an example). When I finally remove my finger from the slider at 25, the Control4 UI will pause a second and then revert back to showing the 2x scaling. So the display will then jump up to show 50 for the volume level. This is obviously not ideal as you basically have to slide the volume to the left (down) even when you want to raise the volume, because of the scaling.
I know this is long winded, and may be hard to follow. The way this would have to be fixed is to always use the 2x scaling (or 1x, just not a combination of the two) for both displaying and for setting the volume. The way it is coded now, the display is 2x, but the control or volume command itself is 1x (or 1:1 with the Sony setting on its front display).
Please let me know if this makes sense. I've also attached a screen shot from my iPhone of the slider I'm describing. It's at the bottom of the screen. The iPad version also shows the same issue.