Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter

[NeoTheOne]

Hi Guys,
Need your suggestion about Nutrik XLR MALE connector. I have a passive I/V stage that has the green barrel connector

What would be the best neutrik xlr MALE connector that would be easy to connect to the barrel connector.

Ian sells Neurik XLR connectors, NC3MAAH which are for PCB boards. I'm looking for one that is more suited for enclosures. There are so many options on Amazon and not sure which is good.

 

[Spacejack]

Two ones I use for my own projects are:
https://www.neutrik.com/en/product/nc3md-l-b-1?c=audio - metal housing

 

[Ghostship]

Can multiple ES9038Q2M Dual Mono II DAC HATs be stacked together for improved sound quality?

 

[Ras Dan]

Does anyone know if it is silly idea to move the fuses off of the linear PI on to a panel for instance ? by jsut extending the contact with a couple of wires, I suspect it may cause some imbalance in the circuit , but may someone will know

 

[gizmo3]

I'm working on shielding for transformers and power supplies, not quite ready yet.
whether it helps remains to be seen.
the clocks are also shielded and grounded.
maybe Mu Metal would have been better.
I have still reserved space for 2x uc conditioner 3.3 volts and 5 volts.
all in all the sound is perfect.

 

[zabloc]

will this support utilizing USB HDD connections to full extent on RPi 5 as well?

I honestly don't know, I don't use the disk on the RPi5. But you can try.
This configuration (PSU_MAX_CURRENT=5000) telling the firmware that this is bench power supply and that it should not attempt USB-PD and assume that it is 5A capable.
I have no problems with Ian's power supplies (UcPure or PurePi+Ifi iPower X) with this setting. I even tested a LinearPi Dual 5V with a UcConditioner connected in parallel, and it worked great with this RPi5 setting.
You can do this configuration (PSU_MAX_CURRENT=5000) through the Raspberry Pi OS.

 

[dddac]

Is there a step-by-step description how to do this for non-RPI experts? (add this PSU_MAX_CURRENT=5000 line).

 

[zabloc]

Rpi 5 with SD Card draws onl 0.5 a 0.7 A. The problem is the PD protocol. See my blog

dddac, did you maybe try turning off PD through the firmware with PSU_MAX_CURRENT=5000?

 

[zabloc]

Is there a step-by-step description how to do this for non-RPI experts? (add this PSU_MAX_CURRENT=5000 line).

I will write you a manual to do this, give me a day or two.

 

[clsidxxl]

Hi
I would like to know if anyone uses a UcPure 15V configuration in a 3 units Modushop enclosure

 

[SimonJ]

Who has experience with the Amanero USB devices please ?

Did you use the Amanero Combo 384 or the 768 version?

I am not sure if there are any differences?

thanks

​

 

[SimonJ]

Hi
I would like to know if anyone uses a UcPure 15V configuration in a 3 units Modushop enclosure

I am using with a 2U Modushop enclosure. My UcPure 15v using 6 x 3000 super caps and also in the case is Andrea clocks

 

[VMRKarnati]

I will write you a manual to do this, give me a day or two.

@zabloc please share it in this thread. It will be helpful for many. thanks,

 

[dddac]

@VMRKarnati - Please be patient, it is a complex thing and zabloc was so kind to write one up, share it with me on PM for testing if it can be reproduced easily step by step and works. If so, I am sure it will be published. But publishing something which does not 100% works or is 100% clear for unexperienced RPI users (like me), will lead to endless back and forward of dicussions..... which we try to avoid obviously

 

[gizmo3]

shielding is now complete.
and a smaller button for the monitor pi pro.
Next is 2x 3.3 V shunt regulator for the DAC, who has experience with that?

 

[Spacejack]

Next is 2x 3.3 V shunt regulator for the DAC, who has experience with that?

I have some experience using them for DAC power supply and they work very well. My ones are discrete shunt type.

Here is my post from some time ago:

https://www.diyaudio.com/community/...eapon-to-fight-the-jitter.192465/post-7631950

At the moment I have them connected to UcPure Quad in 5v configuration.

 

[gizmo3]

Thanks, so at least the sound improves or changes for the better. I then plan to purchase a tentlabs 3.3 v shunt.

 

[gizmo3]

for ian canada, i am trying a micro sd extension via the purepi II, the input plug (on/off control) is just a bit in the way.
For now I have removed a little bit of the plastic and it just fits.

maybe an idea to move the input a little more to the left for the next purePi.



https://www.audiophonics.fr/en/acce...micro-sd-to-female-micro-sd-25cm-p-10896.html

 

[Spacejack]

Thanks, so at least the sound improves or changes for the better. I then plan to purchase a tentlabs 3.3 v shunt.

These are the ones that I use: Muzg Audio discrete shunt regulator

 

[weust]

What is the shunt used for?