@Markw4
Yes it makes sense. So if I were to use both the DIR9001 and the JLsounds I2soverUSB, I'm wondering how I would connect the wires from both boards to the 2-wire?
I see that JLsounds offers some PS boards. Would something like this one work for the clean power? http://jlsounds.com/powerltp.html
Yes it makes sense. So if I were to use both the DIR9001 and the JLsounds I2soverUSB, I'm wondering how I would connect the wires from both boards to the 2-wire?
I see that JLsounds offers some PS boards. Would something like this one work for the clean power? http://jlsounds.com/powerltp.html
Those power supplies at 5v could work. Still need one or more transformers.
Regarding I2S wiring, there are different ways to do it. There are three signals each of which may be known by more than one name. There is a frame clock, sometimes referred to as a word clock, or a LeftRightClock. There is also a bit-clock. Then there is a data signal. (this is for PCM coded audio). There are also different protocols for how clock and data timing work together. Whatever you are using now with DIR9001 will probably also work with I2SoverUSB.
Also, each of the three I2S signals should have its own dedicated ground wire (which his connected to ground at both ends). The I2S wires should be as short length as possible. Really short. Each ground wire should be close to its corresponding signal wire. If you decide to go this route with an I2S switch, then we can talk more about wiring and layout specifics.
Regarding I2S wiring, there are different ways to do it. There are three signals each of which may be known by more than one name. There is a frame clock, sometimes referred to as a word clock, or a LeftRightClock. There is also a bit-clock. Then there is a data signal. (this is for PCM coded audio). There are also different protocols for how clock and data timing work together. Whatever you are using now with DIR9001 will probably also work with I2SoverUSB.
Also, each of the three I2S signals should have its own dedicated ground wire (which his connected to ground at both ends). The I2S wires should be as short length as possible. Really short. Each ground wire should be close to its corresponding signal wire. If you decide to go this route with an I2S switch, then we can talk more about wiring and layout specifics.
I imagine it would be better to just order a built PS rather than trying to build one myself..lol What about something like this? Linear 5V PS
Probably should work okay. You would need 2 or 3 of them. One for the dirty (USB bus) side of I2SoverUSB, and another from the clean side (that goes to your dac). You might have third one for the switch. If that's too expensive, then maybe run the switch on clean side power. Also, however you are powering DIR9001 should also be isolated from the other power supplies. It means the grounds of devices that are connected to different power supplies only meet at the switch board (or maybe at the dac board, depending). We don't want to have any ground loops through the 5v supplies, is the main point.
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I see, so basically my build I just recently did consisted of the ProtoDAC build/cheap walwart PS/and a DIR9001. The 5V PS connects to the ProtoDAC, there are a total of 5 wires that connect the DAC and DIR9001. The wires from the DIR connect to pins #2 & 6 to the GPIO (40 pins) on the DAC for 5V (+) (-) along with BCLK/DATA/LRCK from DIR to the GPIO pins 12,35,40 on the DAC.
I am very happy with the way it preforms with this set-up using a cheap PS! But I believe I can further improve SQ. The main reason I wanted to build this ProtoDAC was to compare it to my older NAD cd player, which does sound good, but this ProtoDAC took the sound to the next level! So that was the reason for ordering a DIR9001 board so I could use the SPDIF/coax cable from cd player to the DIR.
Now I want to be able to use my PC music files that are played using Jriver media center (that bypasses the kernels in windows?) through my USB cable. My expensive WIre-World USB cable is currently running from the back of my PC to the input USB type B connector on my PeachTree audio Grand-Pre DAC. I want to bypass the DAC that is inside the Grand-Pre and only use the preamp section. Perhaps this will give you a better idea on what I am trying to accomplish.
I appreciate your help and thanks for your time!
I am very happy with the way it preforms with this set-up using a cheap PS! But I believe I can further improve SQ. The main reason I wanted to build this ProtoDAC was to compare it to my older NAD cd player, which does sound good, but this ProtoDAC took the sound to the next level! So that was the reason for ordering a DIR9001 board so I could use the SPDIF/coax cable from cd player to the DIR.
Now I want to be able to use my PC music files that are played using Jriver media center (that bypasses the kernels in windows?) through my USB cable. My expensive WIre-World USB cable is currently running from the back of my PC to the input USB type B connector on my PeachTree audio Grand-Pre DAC. I want to bypass the DAC that is inside the Grand-Pre and only use the preamp section. Perhaps this will give you a better idea on what I am trying to accomplish.
I appreciate your help and thanks for your time!
The problem those things is they tend to produce a lot of common mode EMI/RFI noise. Maybe in the 1-2MHz band, or maybe somewhere else. That type of noise can cause problems through various mechanisms for hi-fi audio gear. Personally, I would prefer to avoid all wall warts and SMPS unless there is no other choice. Even then I would want to be very careful to see if they are causing any trouble that doesn't show very well in typical measurements.
Maybe best to go one step at a time. Already it seems like you are getting into what is some new territory for you. If so, maybe the Grand-Pre could be the next project.