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 HDMI Cable Quality?, Really make a diffrent?

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Will.i.am.Smith
post Feb 8 2012, 04:24 PM

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QUOTE(Mikeyz @ Feb 8 2012, 03:50 PM)
Hi all
Need some advice here so hope i could get some answers from you guys out there.
I am planning to purchase a projector but before that i had planned to attach them on the ceiling center. So i definatly need.a long HDMI cable connection.
What i had generaly know is that the transfer speed will be slower if the length goes longer then 10ft for a v1.4 , should there be a standard gauge i need to be looking for??
Cheapest & longest deal i could find is the monoprice pro series 25ft 1.4 HDMI cable 22AWG.. Pls advice cause i need cable above 10 meter in length. Thanks
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22AWG is quite big size for HDMI v1.4. Wireworld has built in repeater for anything above 10m so it could be a good alternative for your case.I got a few HDMI cables used gave up on the connector than the cable itself. Usually ended up the connector unable to "bite" the socket tight enough for a good connectivity hence some device actually has a "holder" to hold the connector so it's not being pulled down by the cable weight itself and over the long term they'll be gone for good. The is especially true for those "heavier" aka fat HDMI cable.

It's less significant if the required length is 3m or shorter but as the length grows, the quality of the materials used in the cable itself makes the different especially shielding, AWG, purity of the coductors and finally the termination of the connectors at both end.
Will.i.am.Smith
post Feb 23 2012, 03:45 PM

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QUOTE(neb @ Feb 23 2012, 01:57 PM)
did not see version number printed on the cable, is that important?

if the cable can work at 1080p, then it is high speed cable
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Well, my take is this. Usually those affordable hdmi cables will cut corners to save cost so their margin is more (this is the norm right? brows.gif ) and while those audiophile HDMI will usually give you the best possible quality as required by HDMI corp standard.

Look at this one :

Attached Image

This is where the difference between a good quality and a poor quality HDMI cable. Then the purity of the cable material and shielding plays certain part too. However, by meant good quality doesnt meant it has to be expensive as well neither is expensive is always good. I'll always go for the certified HDMI adopters/manufacturers products when it comes to HDMI cables to be safe. And the longer they're in the business, the better it's as they're not found to be cutting corner when being given the license to manufacture the HDMI cables for OEM/mass markets.

The list can be found here :

http://www.hdmi.org/learningcenter/adopters_founders.aspx

Surprisingly most of the audiophile brands arent listed as the manufacturers/adopters which means they're OEM from one of these listed manufacturers instead laugh.gif

I personally ripped apart a few HDMI cables from cheap to decent audiophile brands due to malfunctioning and were surprised at each post mortem investigation and I'll am now a firm believer in good quality HDMI cables at very affordable price brows.gif


Added on February 23, 2012, 3:53 pm
QUOTE(neb @ Feb 23 2012, 01:57 PM)
did not see version number printed on the cable, is that important?

if the cable can work at 1080p, then it is high speed cable
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Nope, you're not correct. High speed term is used in the v1.4 hdmi cable which is categorised into a few category.

Read it here :

http://www.hdmi.org/consumer/buying_guide.aspx

If it's not stated, usually it's v1.3 unless it's stated.


Added on February 23, 2012, 3:55 pm
QUOTE(ZaX17 @ Feb 21 2012, 11:07 PM)
The measurement of the digital signal's quality which is '1' (high voltage) and '0' (low voltage) are known as Signal Integrity. In the digital world, the fundamental of digital signals are actually still analog signal, and in the real case, the '1' and '0' will not be square wave as we see and read in textbook (the higher the frequency, the uglier the signal will be).

First of all, the digital signal is required to swing to correct voltage level before the requirement time (setup time) and hold long enough (hold time) for the receiver to capture/clock the input signal. When in high speed signal, sometimes the output driver is not strong enough to swing the signal in time to meet the correct input voltage. Furthermore, the setup time and hold time are effected by the resistance and capacitance of the cable or connector. This will cause the receiver to interpret wrong inputs.

HDMI protocol is 10GB/s speed with 3 differential pair signals, so each differential pair signal is transferring at 3GB/s speed. They are very high speed where the signal only have 0.3ns to swing from high to low or low to high (at the speed of light, it can only travel 0.1m in 0.3ns).
I do really think this sound very technical. Do you guys still want me to continue?
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This is eye opener..pls..continue..we want to know more brows.gif

This post has been edited by Will.i.am.Smith: Feb 23 2012, 03:55 PM
Will.i.am.Smith
post Feb 23 2012, 05:17 PM

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QUOTE(neb @ Feb 23 2012, 04:30 PM)
ok these quotes are from HDMI website:
so which part  I said is not correct?
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Mr Tiger, perhaps the better way to put it is your statement isnt accurate laugh.gif

The older HDMI cables from v1.1 onwards also can pass 1080p signal. In fact every short enough HDMI cable can pass 1080p signal without problem. So would that meant they're all High Speed as labelled in v1.4 standard?

HDMI corp is under heavy pressure by its licensees to remove the v1.1, v1.2, v1.3 and v1.4 mindset among the consumers which the company itself actually marketed it in such a way since HDMI cable incarnation. As they move pretty fast through the version, it resulted some licensees was unable to sell their older version and have to result to lowering pricing and/or repackaging in order to sell them for a margin. This has resulted in some drop out of the licensees to undertake HDMI as part of their product portfolio.

Hence moving forward, realizing what they have done, HDMI corp issue a statement for the packaging and marketing that no version numbers should be used to in a way, in my own term, to confuse the market instead so HDMI cables be it 1.3 or 1.4 can sell without much problem. Official statement sometimes is a good start to understand what's their latest trend in their product lineup but they're at most, a politically correct statement than a keen interest in protecting the consumers at their own cost laugh.gif

Dont chew me, Tiger laugh.gif

This post has been edited by Will.i.am.Smith: Feb 23 2012, 05:19 PM
Will.i.am.Smith
post Feb 23 2012, 05:45 PM

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QUOTE(neb @ Feb 23 2012, 05:43 PM)
yes, if the cables, short or long or fat or skinny or branded or pirated or beautiful or ugly, certified at high speed test, then they are high speed cable. what other tests do you need for the cable to qualified as high speede cable? Brand name may be?
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Ah..brand name is definitely not, why not you tell me, Tiger? laugh.gif
Will.i.am.Smith
post Feb 23 2012, 06:06 PM

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QUOTE(neb @ Feb 23 2012, 05:56 PM)
may be to test cable's bit error rate in a electromagnetically noisy environment such as next to a GSM transmission tower, to prove that it got adequate shielding, Guinea pig?  icon_rolleyes.gif
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Lol..you go ahead and test and let us know. I aint going there without any protective gear laugh.gif

Was at a few big radar dish and you can hear its high pitch sound which the radiation meter can pick up a lot of wave coming through it..go near those things is like putting yourself in a microwave oven and bake laugh.gif

I aint ready to fight cancers yet..still wanna enjoy my hifi a bit longer brows.gif

Will.i.am.Smith
post Feb 24 2012, 04:20 PM

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QUOTE(neb @ Feb 24 2012, 01:59 PM)
free bundled HDMI cable come with media player is usually standard speed type

I do not have HDMI v1.4 device, will test my"v1.3" cable if it can work on v1.4 devices in the future cool.gif
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I can confirm it'll work except if you're trying to ARC your TV audio to your receive then it wont work. The Ethernet feature so far is quite useless as no device can take advantage of it..yet.

Meanwhile, if your v1.3 cable is shorter than 5m, it'll also pass 3D signal without much problem. Try and see if you got frame drop out problem not, like blinking of the scenes. If there's, the EYE isnt wide enough to pass through the required signal at all time then it's time for you to change the cable.

Most v1.3 cables are either AWG30 or AWG28, rarely got AWG26 while v1.4 starts with AWG28 for short length up to 5m and AWG26 at least for there onward. Audiophile HDMI usually is at least AWG26 to some is AWG24 all the way brows.gif


Will.i.am.Smith
post Feb 25 2012, 10:22 PM

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QUOTE(DarkNite @ Feb 25 2012, 07:29 PM)
Wow ... already 43 pages and with so many salesmen flaunting their superb cable! whistling.gif
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..and a dark "nite" suddenly over shadow them.. laugh.gif
Will.i.am.Smith
post May 20 2012, 05:40 PM

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QUOTE(XPS @ May 20 2012, 04:25 PM)
The rule of the thumb is 10m before repeaters or quality of cable comes into play.
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That's textbook rule. Real life HDMI has 30awg, 28awg, 26awg, 24awg. It's better to limit to 5m than 10m which your picture quality can suffer due to other factors such as connector, gauge and contact point soldering.
Will.i.am.Smith
post May 20 2012, 07:55 PM

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QUOTE(William Somerset @ May 20 2012, 06:39 PM)
Hi guys. Please point me in the right direction if this is the wrong place to post. It's a basic question, and as I'm new to this home entertainment stuff, will like to seek for your input.

It's about the Full HD 1080p feature. Let's say I have a movie of that definition and I load it onto a USB stick and have a TV set, which supports Full HD 1080p, play it from the USB stick, will it be able to produce Full HD 1080p or just SD?

Is it a must for a HDMI cable be used, be it from a HD player or something else, in order for the TV set to produce the Full HD 1080p picture quality?

Thanking you guys in advance. smile.gif
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It depends how you rip the contents to your USB stick. Likely you'll get the SD unless you use certain ripping software/machine.

Yes, all consumer electronics for it to deal with full 1080p HD version, only the HDMI can "handle" the signal so the content is "protected". Of course, exception to this is where the player/recorder is built to rip HD content from the disc to the HDD within the unit but not from one device to another.


Will.i.am.Smith
post May 21 2012, 01:16 PM

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QUOTE(XPS @ May 21 2012, 01:58 AM)
Actually that's the real world guide.  There was a long article and test on this - cannot remember the source, its probably WhatHifi or Audioholics or BlueJeans.

So many choices for HDMI nowadays.  Get one that has thicker cable, well built with gold plated connectors.
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Lol..you may try 10m. I have tried even at 5m, some HDMI cables already struggling with 1080p 3D..

 

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