I have a question for the well-informed audio person here. The tech-specs say the following:
S325 - 80W Soundbar Speaker System:
Inputs: 2 x RCA, 1 Digital Optical (PCM 2 Channel Audio)
Note: They are careful to point out that the audio requires a PCM signal from your TV. My TV won't put out a PCM signal for digital TV channels (which is everything, now).
However, things are different for the S3D40 - 100W Soundbar Speaker System with Sonic Emotion 3D Sound:
Inputs: 3 (3.5mm Aux In, RCA In, Digital Optical In)
No mention of PCM signal required here.
My conclusion: If you plan to buy the S325 and your TV has only optical audio out (like mine), check to make sure it will output a PCM signal (mine will not). Otherwise, you have to go with the more expensive S3D40.
Have I missed the boat in my thinking?
(The reason I bring this up is because I went through the same problem with a Visio Sound Bar. Never heard a peep out of it using the optical out because it was expecting the PCM signal. Just trying to save others a bad experience.)
[MOD: Just checked and both units require PCM signals. We're updating the specs to make that more clear. Sorry for the confusion.]