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Coax vs. hdmi

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Old 03-24-2007, 11:46 AM   #1
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Default Coax vs. hdmi

Is there any advantage running an hdmi from my stb to the tv as opposed to just using a coax cable? Obviously the coax cable feeds the signal to the stb, why wouldn't it be just as efficient running the signal from the stb to the tv as would hdmi or component?
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Old 03-24-2007, 12:44 PM   #2
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You do not want to use coax out from your STB. Coax is horrible once it leaves your set top box and would give you the worst picture quality of any other cable. The top picture quality cable choices are HDMI, DVI and component, use one of these if possible. HDMI and DVI are the same as far as video quality both are digital connections. Component cable is a high quality analog connection. Which is better between HDMI/DVI or component is a matter of the specific system and personal choice, the only way to know which works best is to compare the two yourself on your own system.

But do not use coax over any other choice as this will give you very poor results.
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Old 12-06-2008, 09:53 PM   #3
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...does my HDTV manual state that HDMI and coax offer the same quality and that both provide the best picture...then component....then S-video....then composite. Do we trust the manufacturers, who want us to be happy with our TVs, or the post above?

I hate HDMI for the built in copy which allows downstream control of content I own.
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Old 12-06-2008, 11:31 PM   #4
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Quote:
Originally Posted by hitlerdef View Post
...does my HDTV manual state that HDMI and coax offer the same quality and that both provide the best picture...then component....then S-video....then composite. Do we trust the manufacturers, who want us to be happy with our TVs, or the post above?

I hate HDMI for the built in copy which allows downstream control of content I own.
Consider this then - Component is a coax cable, just like the one used for cable but it has different ends yet it requires 3 separate cables. Wonder why? Separating the video signal is the best method and needed for HD, that's why. DVI, HDMI and component do that, the cable from the box does not as everything is passed along 1 cable.
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Old 12-07-2008, 02:27 AM   #5
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Quote:
Originally Posted by ActionPoint
Obviously the coax cable feeds the signal to the stb, why wouldn't it be just as efficient running the signal from the stb to the tv as would hdmi or component?
The coax cable feed coming into your Set-Top-Box (Dish, cable etc...) is more than likely a digital signal with some type of a compression scheme...(Mpeg2/Mpeg4).

When the STB decodes and 'fluffs' up the input signal, the output signal now can be effected by bandwidth over a signal cable.
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Old 12-07-2008, 03:43 AM   #6
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Quote:
Originally Posted by hitlerdef View Post
...does my HDTV manual state that HDMI and coax offer the same quality and that both provide the best picture...then component....then S-video....then composite. Do we trust the manufacturers, who want us to be happy with our TVs, or the post above?

I hate HDMI for the built in copy which allows downstream control of content I own.
If you are using coax out from your HD cable box you are not receiving an HD resolution to your TV. Only HDMI, DVI, Component and VGA are capable of high definition signals after the signal has been processed through a tuner (cable box). Coax, S-video and Composite cable will only be 480i resolution.

While coax will be fine for over the air HD signals going into your TV which have not yet passed through the tuner, with an HD cable/satellite box you must use either HDMI, DVI, Component or VGA in order to receive a high definition 720p or 1080i signal.

If you are using coax from your cablebox to your TV you are receiving 480i and your flat panel display is upconverting the signal to the TVs native resolution, you are not receiving high definition input into your TV.
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Old 12-07-2008, 10:14 AM   #7
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Quote:
Originally Posted by hitlerdef View Post
...does my HDTV manual state that HDMI and coax offer the same quality and that both provide the best picture...
I agree with the previous responses to this post.

I suspect that the poster has either misunderstood what the manual actually says or taken it out of context.
For example, a coaxial over-the-air input will provide the same (or better) quality picture as a HDMI from a STB.

It would be interesting if hitlerdef could provide either an exact quotation from the manual . . . or better yet, a link to the manual with a note on the page where this information is written.
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Old 12-07-2008, 12:43 PM   #8
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I suspect that the poster has either misunderstood what the manual actually says or taken it out of context.
For example, a coaxial over-the-air input will provide the same (or better) quality picture as a HDMI from a STB.
Exactly, for over the air (antenna) into the TV's tuner you use coax cable, but not out from a set top boxes tuner.
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