Originally Posted by runnerlk
OK I must be really dumb, but all of a sudden, all three DVD players(OPPO, A2, and DMP-BD10) play my CDs in surround sound not 2 channel. I am using the 2 channel preset via HDMI. I have checked and double checked my menus in the source and D2. What am I doing wrong?
Odds are you have selected an audio "Mode" in the Anthem that is generating the surround sound for you from those stereo inputs. It does that by doing math on the incoming stereo audio.
If you have turned on THX post processing (perhaps by accident) then the only Modes you will be offered are the surround sound Modes.
So play a CD. Then press the THX button on the Anthem remote and use the Up or Down arrow keys as necessary to turn off THX post processing.
Then press the Mode button on the Anthem remote and use the Up and Down arrow keys to scroll through the available choices. What you likely want is "Stereo".
Personally, when I'm seated in my primary listening position and not moving around the room a lot, I prefer "Anthem Logic Music" (AL Music) mode over "Stereo". It is a non-aggressive surround sound mode -- i.e., it doesn't create much audio for the surround speakers -- and it turns off the Center speaker to keep from messing up the front sound stage.
Whichever Mode you like you can set as the default mode for 2-channel audio input when you select that device. For the modes that pair up with THX post processing, you can also set the default to have THX either on or off. Do this in the Anthem's Setup / Source Select page.
For example, I have my CD input's default settings for 2-channel to be "AL Music", i.e., non-aggressive "invented" surround sound, and without THX.
The default you specify will be activated each time you switch to that input. You can then change it manually, as you desire, while listening. If you would prefer that the Anthem *NOT* change things on the fly each time you change inputs, just set the default for each type of incoming audio format to be "last used", and the Anthem will just maintain whatever you last set manually.
For example I have my TV settings for 2-channel and 5.1 defaulting to no THX. When the program I'm watching happens to be a movie, I will manually turn on THX. Meanwhile the default settings for my DVD have THX on, and I turn it OFF manually if the DVD I'm watching happens to be of a TV series or other non-movie content.
I will also manually switch to "Academy-MONO" mode when watching old black and white movies.
The combination of defaults and manual adjustments works pretty well. The most common confusion is people forgetting that turning on THX post processing also means switching to the more limited set of available Modes.