the volume knob doesn't change what I'm hearing
- by design
It is assigned to a different output . Fix: The knob drives one output at a time. Press the button for the output you are listening to.
Helix Stadium Owner's Manual 1.3.2 - by design
The knob is locked . Fix: Holding the lit output button disables it. Hold again to unlock.
Helix Stadium XL Floor Cheat Sheet (Rev B)