More > JRiver Media Center 25 for Linux
Re: JRiver please explain how to get DSD4x to work (resolved)
Rizlaw:
Bob,
I sent an email to Wyred4Sound regarding this issue. None other than E.J. Sarmento, top dog of Wyred4Sound, replied.
He said that the DAC-2v2SE is designed to accept NATIVE DSD256. MC25's DSD4x setting (or DoP256) is not supported because the DAC only goes up to 384K and as you previously indicated DoP256 math requires a higher sampling rate. So for all those who have my DAC (or similar DACs) be advised that you can only do DSD2x using JRiver's Media Center 25.
I believe this puts the issue to bed for now.
bob:
--- Quote from: Rizlaw on October 19, 2019, 01:58:57 pm ---Bob,
I sent an email to Wyred4Sound regarding this issue. None other than E.J. Sarmento, top dog of Wyred4Sound, replied.
He said that the DAC-2v2SE is designed to accept NATIVE DSD256. MC25's DSD4x setting (or DoP256) is not supported because the DAC only goes up to 384K and as you previously indicated DoP256 math requires a higher sampling rate. So for all those who have my DAC (or similar DACs) be advised that you can only do DSD2x using JRiver's Media Center 25.
I believe this puts the issue to bed for now.
--- End quote ---
Thanks for the feedback, I just have one more question for you. The sample formats for your X2 show S32_LE, SPECIAL, DSD_U32_BE but for the DAC-2v2se on device 3 I see only S32_LE supported.
MC requires DSD_U32_BE format support for direct DSD. Are you on the latest firmware? Perhaps their firmware needs to add that to it's supported format report?
Rizlaw:
Bob,
Alas, the X2 is an outboard USB Matrix Audio S/PDIF converter. You can read about it here: https://power-holdings-inc.com/Matrix-X-SPDIF-2-Femto-Clock-&-Format-Converter-p137036425
I use it to simultaneously send PCM to both by W4S DAC-2v2SE via the I2s (HDMI) out and PCM to my Yggdrasil A1 via XLR out.
As far as I can tell from use, while it works perfectly for PCM signals, it doesn't work for DoP (even though it supports DoP output via the I2S output). I get no sound output at all when I set MC25 or HQPlayer to output DoP to the X2.
Playing with the dip switches on the unit doesn't improve the situation.
I am attaching 2 PDFs showing the DAC-2DSD signal lines and the Matrix showing its pin outs). I'm no EE, but it looks like they match so I don't know why DoP doesn't work. I probably should contact Matrix about this.
As for firmware, I don't believe there are any firmware updates to the Matrix unit. I don't think they provide for field or factory firmware upgrades on the device.
Rizlaw:
As a final update on this issue I called the Matrix Audio USA distributor for info on the Matrix X-SPDIF converter and my Wyred4Sound DAC. I spoke with Arthur Powers, a really nice fellow. With respect to the Wyred4Sound DACs he said they do not follow the PS Audio format for I2S pin outs for the HDMI cable I2S connection between their converter and Wyred4Sound DACs. Matrix follows the PS Audio I2S standard. Arthur checked with someone very knowledgeable on this issue and sent me the following email:
--- Quote ---"The Matrix X-SPDIF unit uses the PS Audio standard and it differs from the Wyred4Sound DACs in pins 1/3, and not pins 7/9. By changing the wiring to pins 1/3 you can correct the absolute polarity problem with PCM signals and the out-of-phase problem with DSD signals. If you only changed pins 7/9 it would not correct the absolute polarity problem with PCM signals although it would correct the out-of-phase problem with DSD signals, but with the secondary disadvantage of reversing the channels. Matrix's dipswitch, which simultaneously changes both the 1/3 and 7/9 wiring points, does not correct the out-of-phase problem with DSD signals and it reverses the channels."
So you need a HDMI cable that only reverses pins 1 and 3. :)
--- End quote ---
I have contacted "Cables To Go" for a quote on a custom made HDMI cable that follows the above recommendation. If it's not too expensive I will order it and see what happens and whether it allows me to get DSD4x with MC25.
Addendum: Heard back from Cable To Go: they don't make custom HDMI cables in US, they're only made offshore (i.e., China) in bulk. I also contacted Blue Jeans Cables and they said a cable could be made but it would cost $400.00 (no kidding). Their explanation was that the machines which make the cables have to specifically set up to insert the tiny wires into the correct pins, solder and mold the plastic and metal connector on to the cable ends so that the tight HDMI specs are maintained for the integrity of signal transfer. To set up all this is what costs the money and according to Blue Jeans this is only requested by large contractors and the Government.
Awesome Donkey:
Do note (in case you already don't know this), just in case you might be planning on using a HDMI cable from a PC connected to any sort of DAC, DSD won't work that way because it's not possible to get DSD over HDMI working from a computer to a DAC/receiver/etc. But if it's USB from a computer to the DAC, it should be fine.
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