A:AnswerHi LansingMike,
Please check the Auto Volume Setting to see if it is enabled. The Auto Volume function automatically adjusts the sound to a certain level when changing channels or switching to another external input. Go to Settings > All Settings> Sound > Expert Settings > Auto Volume.
You may also want to perform a Sound Test under Support > Self Diagnosis > Start Sound Test.
~Samsung Advisor
A:AnswerHi Chopper - The HW-A550 Soundbar can be connected to the CU80000 TV via a wired (HDMI, Optical) or wireless (Bluetooth) connection.
~ Samsung Advisor
A:AnswerHi,
Two of the HDMI ports are located at the back of the TV inset on the left side. The third port is next to the inset ports on the back of the TV.
~Samsung Advisor