Originally Posted by atrac
Tonight, "Lost" on ABC is a show that is definitely broadcast in Dolby Digital 5.1. Try watching it to hear if the audio is bad.
: As you requested, I watched a fifteen minute portion of "Lost" on ABC and attempted to hear bad audio. Once again, as with the other DD 5.1 shows I have watched, I heard no bad audio (as has been defined in many posts in this thread). I used my Zenith CECB (built Jan. 2008) connected via composite red, white, yellow to my Toshiba 27A51 (built Jan. 2002) CRT TV. Sound was acceptable, even good.
During transitions from program to commercial or back, I could momentarily hear a medium high pitch hum, but this disappeared after the audio feed resumed. During "Lost" I think I heard one 4 to 5 second portion of dialog (speech) where a few words contained break-up or distortion at the end of the words. This may have been a small sampling of the audio issue being discussed here, however it was very short and not particularly noticeable. Others have described the audio issue as constant.
Here's a Spec note from my Toshiba 27A51 CRT TV:
AUDIO INPUT: 150 mV (rms) (30% modulation equivalent, 47 ohm)
I expect this is a standard red/white composite audio spec, but I do not actually know.
Could the audio issue being discussed possibly be explained by LG's use of one of two possible can tuners inside the box? It has mentioned and illustrated several times in this thread and elsewhere that some of the Zenith/Insignia CECB's use a Sanyo can tuner and others use an LG can tuner. Could one of these tuners exhibit the audio problem, possibly via RF interference, where the other tuner does not?