Looking for a wired volume control solution

Jul 7, 2018
I have my Samsung 55F6350 HDTV connected to a Bose companion 3 series II speaker system. The Bose system has a short wired volume puck. I have the tv connected to the Bose speaker system and the Amazon Echo Cube. However, I have to walk across the room and manually adjust the volume on the Bose system when watching tv. I would like to control the Bose speaker volume through the Amazon Echo Cube. Is there a remote connector that will allow me to control the Bose system through the Cube?
I don't think there is any way to control the Bose volume puck with Alexa and the TV audio output is probably fixed volume.
A Sonos Beam soundbar would allow you to use Alexa to control the volume.