Originally Posted by dude2006
I read in numerous places (AVS and others) that there is no such thing as "1.3 cable", that all HDMI cables are the same. What is the truth
First-- before I get slammed for "hijacking" this thread--let me say that a few posts on cables is valid here as a lot of the folks are buying the 905 for its HDMI 1.3a capabilities.
Now, before I comment on your note-- let me say that you will get as many opinions for as you will against. The difference between the 1.2 and 1.3 cables is that the 1.3 cables have supposedly been tested to handle the much higher bandwidths. Does that mean that 1.2 cables of relatively short lengths (3-10 feet) wont handle it?--I think it really depends on the cable structure and components. Some users report "sparklies" due to bit drop outs at high bandwidth on some cables.
Here is a link to a paper and brochure on the HDMI.ORG website worth glancing at:http://www.hdmi.org/pdf/whitepaper/S...aperv73(2).pdfhttp://www.hdmi.org/pdf/HDMI_Insert_FINAL_8-30-06.pdf
Unfortunately until recently independent testing and evaluation reports of cables hasn't been something that has drawn alot of interest from the testing community. (Definitely not as "sexy" as testing video processor chips!
But there is a new effort starting up to test cables:http://www.cepro.com/article/new_pro...i_is_on_board/
Whether all the major manufacturers will submit their cables for testing remains to be seen.
I would certainly like to see the difference in core construction though between Monoprice's 1.2 and 1.3 cables. Here is the spec sheet on the 1.2 cables:http://www.monoprice.com/drawing/HDMI24TC.pdf
There is no spec sheet yet on the 1.3 cables. But in looking at the 1.3 specs, the 1.2 cables are tinned copper while the 1.3 are silver-plated copper.
As to the above comment about LPCM-- in that format you do NOT need 1.3. However, I'm not a EE so I'll have to leave it to someone else to explain the differences between LPCM and BITSTREAM versions of the lossless HD formats. BITSTREAM which can be handled by the 905 I believe requires the higher bandwidth.
From the HDMI.ORG FAQ's:
Q. What's new in the HDMI 1.3 Specification?
New HD lossless audio formats: In addition to HDMI's current ability to support high-bandwidth uncompressed digital audio and all currently-available compressed formats (such as Dolby® Digital and DTS®), HDMI 1.3 adds additional support for new lossless compressed digital audio formats Dolby TrueHD and DTS-HD Master Audio.
Q. Do I need v1.3 HDMI to hear the new Dolby TrueHD and DTS Master HD audio content on HD-DVD or Blu-ray players?
No. The Dolby TrueHD, Dolby Digital Plus, and DTS-HD Master Audio can be decoded by the playback device into multi-channel Pulse Code Modulation (PCM) digital audio streams, which is an audio format standard that can be sent over any version of HDMI. In fact, all versions of HDMI can support up to 8 channels of PCM audio at 192kHz, 24 bits per sample.
To do this, consumers should ensure that their playback device (such as HD-DVD or Blu-ray player) is capable of decoding these new lossless Dolby & DTS audio formats into the PCM format on the HDMI output, and that the audio device (such as an A/V receiver) is capable of receiving multi-channel PCM audio over the HDMI inputs. Consult your user manual/product specification sheet to determine whether your device supports such PCM capabilities (we believe that nearly all HD-DVD and Blu-ray players will, but users should confirm this). Devices that support HDMI v1.3 and higher may also offer the option to transport the high definition audio formats as a compressed, encoded stream over HDMI so that the decoding function can be performed by the A/V receiver (whereas the above transport method has the playback device performing the decoding).