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What is The Best Input Signal for CRT

611 Views 16 Replies 12 Participants Last post by  Tedd
Newbie Alert !!!

There is much made about progressive scan signals in the digital world. And as I understand, it uses component input non-interlaced.

Most CRT PJs seem to come with VIDEO, S-VIDEO, and RGB. Few have component.

So what would be the best input signal to drive a CRT ?

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RGB, usually from a Home theater PC if you really want to knock your socks off!

Secondly from an external processor like a line doubler.

Thirdly, a progessive DVD player with component out, but run through a transcoder to turn the component to RGB.

And NEVER plain video.

I'll vote RGB since all of the others (composite, s-video, component) require the signal to be broken up (processed) into RGB to be useful to the projector anyhow.

Can anyone recommend a DVD player that uses RGB? I have a 1020qm which only has composite and RGB and although my computer monitor has the same 5xbnc RGB inputs, I'd rather get a standalone player.

I cant use progressive players either. Doesn't have to be a really expensive top of the range unit, just one with five outputs for RGB.
Originally posted by AFryia
Newbie Alert !!!

So what would be the best input signal to drive a CRT ?

RGBHV 1440x960p @ 71.928Hz for film source NTSC DVDs on a properly adjusted 9" EM focus projector. That's exactly 2X DVD resolution in both directions so scaling artifacts will be minimal, the projector will resolve it fine, and the refresh rate is not a nice round number because NTSC is 59.94 fields/second for historical reasons.

Most DVD players with scart output can drive the 1020 if you make (or buy) a SCART to RGB cabel.

Take a look at this :
http://www.eboyztoyz.net/1031q/pages...tion.htm#HD15- >DB25%20RUGBY%20adapter

Good luck.

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Doesn't anyone look at HD ? I know the question was about signal format, and I have to agree with everyone else, RGB all the way, I have NEVER run plain video and "component" is not an option as a signal format for most crt projectors. It is no better than RGB. Remember, RGB is, was, and pretty much will always be the standard for professional broadcast quality signals and high resolution computer images. But an RGB HD signal is the best looking, sharpest, most detailed image I can get out of my projectors.
Originally posted by gn2
Doesn't anyone look at HD ?
No, because

1. D-Theater tapes aren't worth over $350 each (I can name 3 decent titles. Dividing $1000 for a deck by that number of movies puts a pretty big price tag on each).

2. There is only one OAR HD movie channel and one that reformats to 16:9. For that sort of source material, I'm not going to switch to DirecTV, buy an HD receiver, have a 1394 output added, and buy a D-VHS deck so I can actually get the movies when I want them.

3. Lawsuits here have stopped the installation of HD antennas, although I don't watch network television so that's irrelevant.

This should change if we get HD-DVD without constrained output..... or if Dish comes up with a $750 HD PVR.
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jvc hmdh30000u $661 here.

tapes can usually be picked up used.


hit best price. seems to change periodically. saw it for under $500 a couple of days ago.
From worst to best types of signal input to use:

Composite -> S-Video -> Component -> RGBHV

The last two are your only options if you want to do anything higher then regular NTSC (480i). Only component and RGBHV can do higher then this (HDTV, scaled DVD, etc). Most CRT projectors don't have component inputs because (a) component's much newer then RGBHV, and (b) it doesn't look quite as good (close though) as RGBHV.

On my first PJ, when I switched from a stand-alone DVD player with composite connection, to an HTPC with a RBGHV connection... well the difference was night and day.

- Rick
Thanks All,

So do you run RGB interlaced or non. Or is either possible.

With a HTPC and RGBHV output can you deliver progressive signals. Would you want to ?
Oh you can go beyond standard progressive signals with HTPCs...

I output 720p to my Barco at 72Hz - seems to be pretty much the sweet spot, but you can output just about any resolution and refresh rate you want, with extremely high quality image. It's basically an all in one DVD playback device, with a video processor for scaling and adustment.

Also you can have your HTPC as you HDTV reciever, Cable reciever, Tivo, Timeshifter, Jukebox (both audio and video), I store my favorite movies on my HD so I can access them with a click and not have to get the disk. Access to the web (mainly in the HT room we look up stuff on IMDB.com and DVDprofiler.

It's remote controlled and totally configurable. All this for the price of a PC.

Of course you need computer skills to get it all working how you like, but I think it is well worth it.

Interlaced resolutions are possible, though the current video card manf. of choice (ATi) has broken interlaced in the current drivers, but there is a dongle fix I believe - I've not looked into it as I prefer progressive.

- Rick
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I have to agree with gn2, HDTV is the best. Watched a little of that Britney Spears movie last night on HBO HDTV on my 1209. Dumb movie but boy howdy did she look sharp.

I'll third the HDTV position. I watched the NCAA men's basketball game last night on a very roughed-in BG800 via OTA network broadcast from my RCA DTC-100 and it was still a fantastic picture. Many of the major network prime time broadcasting is HDTV now so I get plenty of sitcom action on a regular basis.

No mention of SDI here... The best picture I've seen to date from dvd: SDI out of a modded dvd player into the htpc (Silk or H3D) then a MP-1 Radeon with RGBHV port into the pj via RGBHV. And why settle for 720P if your projector and video card will handle 960P? 1440x960P at 72 Hz offers up a stunning picture.
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