QtPro FAQ Last updated Save as PDF Setup How do I setup the system? How many emitters can I have in one zone? What is the maximum cable length? What is the difference between the active emitters and standard emitters? Can I control the Qt system with a 3rd party control system? Should I use straight-through or crossover cables? How do I use the Qt controller for paging or background music? Is this Bluetooth enabled? Does the Qt controller have a fire alarm mute? Is the Qt controller rack mountable? What should I set my levels to? What should I set my levels to? Troubleshooting What do the error codes mean? How do I factory reset the Qt system? Why can’t I hear any sound? The level sounds too loud or too quiet and I have already adjusted the volume. How can I change it further? How do I update firmware?