I have a pair of Yamaha HS80M Monitors that have been working great and were able to plug into my old TV. I never had a problem controlling the volume of the speakers with the TV remote, they were synced to do that. But, after having purchased my new LG 4K TV I was forced to buy a Denon AVR-991 Receiver, because the TV only had an optical output. So, the optical out on the TV goes to the Denon receiver and I'm able to hear the TV volume through my Yamaha speakers, BUT I cannot control the speaker volume with the Denon remote, nor the TV remote. I've been through all of the setting and tried everything possible, and I'm hosting an sporting event this weekend. It's really annoying not to be able to mute during commercials and/or turn up the volume. I have to manually adjust the volume of the Yamahas on each of the speakers.
The Yamaha's are connected to the receiver with XLR cables. And the TV is connected to the receiver with the optical cable.
Can anyone please help me figure out how to sync the speakers with receiver remote?