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Old 06-11-2015, 07:38 AM - Thread Starter
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hdmi vs optical vs digital coax cable? which one would produce better sound quality?

just wanting to know if anyone made this comparison? a friend said it always sounds better through optical than hdmi.

what are your thoughts?

basically a media player to receiver or a bluray to receiver?

thanks

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Old 06-11-2015, 07:52 AM
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Originally Posted by xcrossover View Post
just wanting to know if anyone made this comparison? a friend said it always sounds better through optical than hdmi.

what are your thoughts?

basically a media player to receiver or a bluray to receiver?

thanks
"Technically" it shouldn't make any difference as long as the quality of the cables are good, it's still all just a digital signal. But we all know how "Technically" goes. More over it will depend on if a mfg. skimped on any part of the signal chain for one connection over the other.

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Old 06-11-2015, 08:05 AM
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Quote:
Originally Posted by xcrossover View Post
just wanting to know if anyone made this comparison? a friend said it always sounds better through optical than hdmi.

what are your thoughts?

basically a media player to receiver or a bluray to receiver?

thanks
Between Optical and Coaxial, I pick Optical w/o thinking as Fiber Optics are far superior to Copper.
However, as up to today, HDMI is winning not only video but audio field.
AFAIK, HDMI is only the connection that support hifi, lossless audio such TrueHD and DTS-HD Master.
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Old 06-11-2015, 08:21 AM - Thread Starter
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thinking a dedicated sound cable may sound better than hdmi..i guess theres no diff

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Old 06-11-2015, 08:30 AM
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I'm actually going to do a little experiment over the weekend, I need to double check my DirecTV Genie,( I know my BR player will do what I want) but I'm having handshake issues with my receiver (always have) I'm going to try splitting the audio and video signal to see what happens, I'll let you know what happens.

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Old 06-11-2015, 08:34 AM
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Quote:
Originally Posted by xcrossover View Post
thinking a dedicated sound cable may sound better than hdmi..i guess theres no diff
No, there is a huge difference, like tinhvo stated:
"AFAIK, HDMI is only the connection that support hifi, lossless audio such TrueHD and DTS-HD Master."

The optical or coax digital line cannot handle the high res audio. Only HDMI - or - multi-channel analog can do this.
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Old 06-11-2015, 08:49 AM
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Quote:
Originally Posted by xcrossover View Post
thinking a dedicated sound cable may sound better than hdmi..i guess theres no diff
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Originally Posted by quad4.0 View Post
No, there is a huge difference, like tinhvo stated:
"AFAIK, HDMI is only the connection that support hifi, lossless audio such TrueHD and DTS-HD Master."

The optical or coax digital line cannot handle the high res audio. Only HDMI - or - multi-channel analog can do this.

My Bad, I could have sworn optical would, I must have gotten confused with standard surround formats. This still will be worth a try for my DirecTV issue since it doesn't support HD Audio anyway.

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Old 06-11-2015, 08:52 AM
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There shouldn't be a difference, except that coax and optical toslink do not support 7 channel audio.

These are all just digital transport mechanisms. Think of it as the zip container around a file. The internal file integrity doesn't care if it's 7zip, winzip, or gzip. The file inside is still the same when it's unpacked from the zip.
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Old 06-11-2015, 08:57 AM
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Originally Posted by xcrossover View Post
just wanting to know if anyone made this comparison? a friend said it always sounds better through optical than hdmi.

what are your thoughts?

basically a media player to receiver or a bluray to receiver?

thanks
Optical will be better over long runs if you can keep from crimping it. Over short runs it shouldn't matter. Only HDMI can handle the bitrate requirements of Dolby TrueHD and DTS HD Master audio found on newer bluray discs.
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Old 06-11-2015, 03:09 PM - Thread Starter
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so in other words hdmi is superior regardless..even on stereo output?

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Old 06-11-2015, 03:16 PM

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Optical is better for long runs and won't cause ground loops
Coaxial is better as jitter is lower
HDMI carries HD audio, but you won't be able to have as long cables like optical.

I guess if you're a electronics engineer the differences may be more apparent.

Also just because it's a digital connection doesn't mean it has error correction and CRC like computers.
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Old 06-12-2015, 05:05 AM - Thread Starter
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Thanks all!

Onkyo TX-SR608 / Wharfedale Atlantic AT-500 Fronts / Wharfedale Xarus Rears and Wharfedale EVOLUTION 2 Centre Speaker / Wharfedale Diamond SW150 Sub / WD Media Player / LG BD player / PS4
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Old 06-12-2015, 06:20 AM
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TOSLINK: Multi-mode plastic fiber:

"Due to their high attenuation of light, the effective range of plastic optical cables is limited to 5–10 m"

---

I worked on Cross Country fiber, single-mode glass for a while.

The range there, with admittedly more powerful lasers, was 50 - 60 miles before amplification and dispersion correction, with 500 miles or so before it would be necessary to actually receive the light, turn it back into electrons, and retransmit with a new laser, with (at that time) up to 32 lasers firing down one fiber.

See DWDM, EDFA

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Old 06-12-2015, 06:35 AM
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Quote:
Originally Posted by xcrossover View Post
so in other words hdmi is superior regardless..even on stereo output?
Optical and coax is fine for lossy DD-DTS and stereo.
as is analog multi-channel.
analog MC and HDMI can deal with all audio formats.
Broadcast TV cable, sat., and streaming all offer lossy audio. Only Blu Ray - dvd audio - SACD - offer loss less high resolution audio. If you do not have an avr or audio amplification, and setup, and only TV speakers, it makes no difference what cable you use. In any event, all will provide good quality audio. Just don't get sucked into expensive cables or speaker wire.
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Old 06-12-2015, 12:45 PM
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I was just waiting for jitter to come up. Let the fun begin.

-tm
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Old 06-23-2015, 04:11 AM
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The quality of the cables are more important than their type.
But my choise Optical for stereo and HDMI for any other.
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