Moire on Bush 28" in 60HZ

26-01-2006, 12:30 PM

This is a cheap 28" widescreen TV and it's fine except when I run my XBOX 360 in 60HZ mode. There are moire patterns on the edge of the screen. Could it be the inbuilt speakers?

Any help???

hamster · 26-01-2006, 12:44 PM

NO, it's because of the XBox running 525 / 480 active line mode. The shadowmask structure is optimised for PAL (625 line / 576 active.)

Speakers cause colur impurity, never moire.

Sojurn · 26-01-2006, 1:07 PM

Quote:

Originally Posted by hamster

NO, it's because of the XBox running 525 / 480 active line mode. The shadowmask structure is optimised for PAL (625 line / 576 active.)

Speakers cause colur impurity, never moire.

Though the Xbox 360 dashboard setting is "PAL60" not just 60hz or NTSC so should that not retain the PAL quality?

Though I suppose it does depend on what the game does with this 60hz setting it could be outputting NTSC.

I don't know much about this stuff

hamster · 26-01-2006, 1:17 PM

Yes, the colour information is encoded in PAL, the scan rate is 60Hz and there are 480 active lines I bet. This means that the graphics processing is all at the same rate as NTSC, so they can then just stick a PAL encoder on the back.

So I would bet it's PAL M, which is 525/60Hz PAL. It's the same as if you play an NTSC DVD, which often gives bad moire on some sets.

Anyway, moire is nothing to do with the speakers.

26-01-2006, 1:54 PM

Is there anything I can do to eliminate this? It's really annoying.

I can use Pal50 but the video intro's all stutter quite badly.

Sojurn · 26-01-2006, 3:28 PM

I'm in the same boat as you Just b. I'm shopping around for exactly the same kind of TV just to eliminate that stutter (28" widescreen 60hz cheap). It is hard to find reviews on these cheap sets.

I've been looking at the Bush ones, think I will pass on them now, hope you find a solution.

hamster · 26-01-2006, 5:04 PM

Turning up the contrast or brightness can help, as the tube will defocus slightly, thus airbrushing out the darker parts of moire.

Moire always looks worst on low brightness areas.

27-01-2006, 11:42 AM

It's a shame really, as apart from this the TV is fine, if you weren't bothered about 60hz it would be sorted.

One thing, I think it's the american/japan developed games that stutter. PGR3 doesn't stutter at all on the video intro (Developed by Bizarre games, English) they have obviously optimised the video for the 50hz setting.

26-01-2006, 12:30 PM	#1
Just.b Guest Posts: n/a	Moire on Bush 28" in 60HZ Advertisement Want to Advertise? This is a cheap 28" widescreen TV and it's fine except when I run my XBOX 360 in 60HZ mode. There are moire patterns on the edge of the screen. Could it be the inbuilt speakers? Any help???
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26-01-2006, 1:54 PM	#5
Just.b Guest Posts: n/a	Is there anything I can do to eliminate this? It's really annoying. I can use Pal50 but the video intro's all stutter quite badly.
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27-01-2006, 11:42 AM	#8
Just.b Guest Posts: n/a	It's a shame really, as apart from this the TV is fine, if you weren't bothered about 60hz it would be sorted. One thing, I think it's the american/japan developed games that stutter. PGR3 doesn't stutter at all on the video intro (Developed by Bizarre games, English) they have obviously optimised the video for the 50hz setting.
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