I have this from Ali, tempted by galvanic isolation and canel swap in DSD. But it is not working. Any ideas ?
What do you mean by saying "its not working?"
There is no sound, not even with unencrypted content?
You can't swap the DSD channels?
There is no sound, not even with unencrypted content?
You can't swap the DSD channels?
Do you have an oscilloscope?
What is the source device? What is the source content you are trying to play?
What is the source device? What is the source content you are trying to play?
Source is Manunta DDC3 USB conwerter with HDMI I2S output, I have now another reciever that is working, but I wanted this one as it has galvanic separation and autoatcalyy swaps channels when DSD i playing. I think tere is no sense to focus on it. I just want form China money back, prchaps i wind even better
I added this one to my DAC, but I don't use DSD so can't comment on that side of things.
There are two standards for DSD channel assignment, and your dac must not follow the same standard your HDMI board is set for. You might have to swap it somewhere else in the software system, or in the dac I2C register settings.
source device is manunta m2tech ddc3 and it can send via hdmi probably all types of standards (can be chosen via iphone application) receiver is Soekris DAC 1941
As far as I know, there are I2S outputs using LVDS voltage levels and HDMI connectors that have nothing to do with real HDMI, except for the connector type. Maybe that could be the problem.
The output from Manunta in the form of HDMI is actually dedicated to transporting the Audio signal so that a DAC with an input and a converter can extract an I2S signal from it. Look at the photo. There are several transmission formats, the most popular one is probably PSaudio. But this is not a problem because DDC3 can emulate all formats, they are selected by the application. The point is that the device shown in the photo by Pathway works, I have it too. And the second one was purchased not even though it should have been. The advantage of the one that doesn't work is that it recognizes the DSD and PCM signal and changes the channels itself. There is no need to do this manually. Soekris does not distinguish DSD from PCM and the channels are swapped: DSD drums on the right and PCM on the left. I asked the seller to send a second copy.
On that white board there are jumpers for A or B config.. Whatever that means🙂 But might help with your case
That board pictured above is the same one as in my Transport.
They do indeed and an A and B configuration.
Of course the HDMI to i2s and i2s to HDMI boards are for i2s connections, not compatible with HDMI devices.
They do indeed and an A and B configuration.
Of course the HDMI to i2s and i2s to HDMI boards are for i2s connections, not compatible with HDMI devices.
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I see now that the thing the OP has is to extract i2s and DSD from a HDMI device, very different.
Oh I see now.
The OP source is Manunta DDC3 USB converter with HDMI I2S output.
So that means the Module he got off Ali is useless.
So @jaskierster needs a HDMI to i2s receiver module like this one.
https://vi.aliexpress.com/item/3285...ation.0.0.71713e5ft9ZA3U&gatewayAdapt=glo2vnm
Same as the one I fitted to my DAC.
Was quite confusing as the module he got from Ali is Incorrect for his purpose.
The OP source is Manunta DDC3 USB converter with HDMI I2S output.
So that means the Module he got off Ali is useless.
So @jaskierster needs a HDMI to i2s receiver module like this one.
https://vi.aliexpress.com/item/3285...ation.0.0.71713e5ft9ZA3U&gatewayAdapt=glo2vnm
Same as the one I fitted to my DAC.
Was quite confusing as the module he got from Ali is Incorrect for his purpose.
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Yes, although the module the OP has pictured in his post is for HDMI, so of no use to him with his Manunta DDC3 USB converter with I2S output.