this is so tempting
May I ask how to engage double-desk? directly feed I2S signals into 4 AD1862s at certain point?
Thanks
Yes, there are pads. Run wires through. If you refer to the board with JLsounds sitting on top, they can be seen.
I meant: close to the signal wire (coax is not ridiculous either the gnd vias is close too)
Last edited:
In case someone else will be looking for the answer. I got a note from Lyuben and "G" must be shorted to use the external oscillator board.
You go one by one and make a list of elements. I don't get everything at Mouser, just the essentials. I sourced the Elna and Nichicon capacitors here locally, from a trusted man.
There was one in the thread iirc from Miro, but it also is about what you want to acheive. Everyone has his own passive parts' choice, so....
Has anyone externally powered their JLSounds I2SoverUSB with Sparkos discrete 5V regulators?
https://sparkoslabs.com/discrete-voltage-regulators-audio-power-supply/
https://sparkoslabs.com/discrete-voltage-regulators-audio-power-supply/
I don't know of such a case. We mainly use LM1117T and LT1963 or LT3015. We put what we can find in the home warehouse.
There are voltage regulators on that board again, so there's probably no point in spending Sparkos on it. 😎
Due to the minimal heating of the BD139 transistor on the XMOS part, I supply 4V there, and 5V for the part with oscillators.
There are voltage regulators on that board again, so there's probably no point in spending Sparkos on it. 😎
Due to the minimal heating of the BD139 transistor on the XMOS part, I supply 4V there, and 5V for the part with oscillators.
My home warehouse happens to have the Sparkos in stock 
.
Good point, the USB supply should be lower than 5V to reduce heat generated.
I have finalized what supplies will be used for the analog side of AD1862 and IV stage. (Jung/Grunf shunt regulator)
What is your choice for the AD1862 bipolar digital supply?
Since I’m not using the shift registers and I2SoverUSB will have it’s own supplies, I could use a duplicate analog supply for the digital side.
Appreciate any thoughts and feedback….thanks.
.Good point, the USB supply should be lower than 5V to reduce heat generated.
I have finalized what supplies will be used for the analog side of AD1862 and IV stage. (Jung/Grunf shunt regulator)
What is your choice for the AD1862 bipolar digital supply?
Since I’m not using the shift registers and I2SoverUSB will have it’s own supplies, I could use a duplicate analog supply for the digital side.
Appreciate any thoughts and feedback….thanks.
Last edited:
Vunce, why not simply copy the aya 5 5V supply? It is using ones of the most quietest discrete parts.
If you can reproduce it with the good caps spacing 2 to 2.5 mm gap for inductance, pan FR works fine here for the digital reg. At least for me with thz same shematic layout but classic discrete parts. Those zenet are quiet at these voltages. Try final decoupling with 1 uf 0805 acrylic only at the dac chip pin pan FC for the bigger capacitance us an option over the Fr but different rendering. Up to your hifi chain abd own tastes.
If you can reproduce it with the good caps spacing 2 to 2.5 mm gap for inductance, pan FR works fine here for the digital reg. At least for me with thz same shematic layout but classic discrete parts. Those zenet are quiet at these voltages. Try final decoupling with 1 uf 0805 acrylic only at the dac chip pin pan FC for the bigger capacitance us an option over the Fr but different rendering. Up to your hifi chain abd own tastes.
Why complicate it? You completed a quick course on making a shunt regulator so I don't see why you wouldn't make a shunt for +/-5V. This one is a little simpler and cheaper😉.My home warehouse happens to have the Sparkos in stock
Good point, the USB supply should be lower than 5V to reduce heat generated.
I have finalized what supplies will be used for the analog side of AD1862 and IV stage. (Jung/Grunf shunt regulator)
What is your choice for the AD1862 bipolar digital supply?
Since I’m not using the shift registers and I2SoverUSB will have it’s own supplies, I could use a duplicate analog supply for the digital side.
Appreciate any thoughts and feedback….thanks.
The result is much better than any integrated regulator such as LT3042, ADM7150 ...
Attachments
According to Vunce's standards (how complicate and open to subbtle tweaks you want to go or not) : I would choose different secondaries for all the digital frontend and digital dac chip PS. The efforts on the I2S PS or whatever streaming devices (tricks, clocks, etc) is paying off. It is an oppurtunity to tweak with parts in relation to your hifi chain and own tastes.
I also remember V has the D shunt from Salas I hven't so I can't input more about Shunt VS linear here. (My experience is it has a lot to do with the resolution of the amp plus loudspeaker and the global magnitude tone in room as well... choose your poison... carrefully to makes the difference !)
I also remember V has the D shunt from Salas I hven't so I can't input more about Shunt VS linear here. (My experience is it has a lot to do with the resolution of the amp plus loudspeaker and the global magnitude tone in room as well... choose your poison... carrefully to makes the difference !)
Last edited: