Originally Posted by bioman35
I have a Samsung HLR4667W DLP. I did a test where I used a splitter and had one coaxial cable going to the STB and one going directly to the back of the tv and the signal going directly to the TV is clearer. Any suggestions?
Suggest setting the 8300HD up for 720p output only (set's native rate); try 1080i only, too. That'll sidestep SD upscaling by the set--from the 8300HD at least. Analog SD, most of the time, shouldn't look significantly better than digitally delivered channels (SD or H/DTV) via the 8300HD. Analog SD is more heavily filtered NTSC, and the filtering, which trims higher resolutions, could just be eliminating details and artifacts that some digital deinterlacers/scalers further distort. S-video delivers somewhat crisper video, and component (YPBPb) or digital HDMI/DVI still crisper video. For DLPs, an all-digital path with HDMI/DVI should work best, but trying YPbPr wouldn't hurt.
Depends on system head ends, but many now deliver SD partially in both analog and digital form, plus digital H/DTV as upconverted or true H/DTV. Getting into your converter's diagnostic mode (see FAQ-like threads in HD recorders/players forum, or the sticky note above) lets you see what channels are digital versus analog. It's possible the deinterlacer/scaler in your display is creating the problem, since some just don't do a good job. Might not be worth using more sophisticated deinterlacing/scaling with a HTPC (see forum here), or a external video processor (see forum here).
There are many setting variations between the 8300HD and the display, and a different combination may improve SD viewing. Sounds like all SD is bad, but if some SD channels are good that implies the PQ of some SD sources--often significant--is playing a role. A local newscast in SD may be crisp, while shots from a shoulder-carried camera at a live golf match may be ghastly. -- John
EDIT: BTW, if you're in zoomed mode, that could screw up most SD/HD viewing due to the extra video processing zoom/stretch requires.