Originally Posted by tubetwister
Optical audio out level is fixed . OTOH if you used an analog 2.0 stereo output from TV to sound bar when using Direct TV and your TV has an variable analog audio output option (usually enabled in sound settings menu) that would work. I have a bedroom TV set up like that on Dish.
That is the best way to do it - but most TVs don't have analog audio out these days and even fewer have the menu option to select Variable Audio Out - but if you have it you should use it.
You didn't mention which soundbar you have, but my Dad's Visio soundbar will imitate the TV volume remote codes - there is a way to program it to see the volume up and volume down from your remote and adjust its volume - check your soundbar manual. That would be another way to get remote control volume.
2-Ch (HT L/R): Oppo BDP-105 BD, Adcom GFP-750 pre, Bryston 10B Sub Xover, Bryston 4BSST2 / Paradigm Signature S4 v.2 (L/R), (2) SVS SB12-NSD (Subs)
Home Theater: Bryston 4BSST2 amp / Paradigm CC-590 (C), Outlaw 7700 amp / (4) Def Tech UIW-RSSII (LS/RS/LB/RB), Samsung 46” 3D LCD