I am in the process of turning an attic into a Home Theater and Cincinnati Bell Fioptics is the cable provider I have. I am using an Entone cable box that has an HDMI out and an optical out. Currently I can only get the Dolby Digital to convert properly using the optical directly out of the cable box into the receiver. Also the cable box will only run at 1080i. Using the TV optical output Netflix, Amazon Video and Rabbit ears will convert to Dolby Digital with no issues but when I try using the TV optical out on the cable box it will not switch over to Dolby Digital. Does anyone know if I need to adjust the settings on the cable box to get this to work? My receiver only has (1) optical input so if I cannot fix this I will have to physically switch the cable or find a 2 to 1 adapter. Which leads me to my final question... If I need to use an adapter which one do you recommend?