Hi all,
After one year of hard working I have only finished my Xono design this week.
I have made some modifications between my design and the original design of the Pass Labs.
First I added a dedicated regulation for each stage.
For the MC stage, I remove the 26V reg and replaced it directly with the same reg that I used for the other stage.
All IRF610/IRF9610 mosfet have been replaced with ZVN3306/ZVP3306 due to their high audio quality!
A friend helps me to make all adjustments to do this trick. We have to make some tests in physical condition to validate this modification.
For the PCB design I fixed some constraint, the most important was to assign all signal wire on the bottom face and the power wire on the top.
The PCb way design under Eagle:
A 3d view of the PCB:
Next step is to produce this PCB ad to build the first prototype :d
Regards,
Alex
After one year of hard working I have only finished my Xono design this week.
I have made some modifications between my design and the original design of the Pass Labs.
First I added a dedicated regulation for each stage.
For the MC stage, I remove the 26V reg and replaced it directly with the same reg that I used for the other stage.
All IRF610/IRF9610 mosfet have been replaced with ZVN3306/ZVP3306 due to their high audio quality!
A friend helps me to make all adjustments to do this trick. We have to make some tests in physical condition to validate this modification.
For the PCB design I fixed some constraint, the most important was to assign all signal wire on the bottom face and the power wire on the top.
The PCb way design under Eagle:
A 3d view of the PCB:
Next step is to produce this PCB ad to build the first prototype :d
Regards,
Alex
Hi PsykoK
Very nice pcb layout. Good job!
But I would like ask you about the exchange between IRF´s and ZVN´s mosfets that you made on your circuit.
Don´t you think that modification may brings the sound of your circuit different from the world AWARNED original Xono Pass Labs ??
Very nice pcb layout. Good job!
But I would like ask you about the exchange between IRF´s and ZVN´s mosfets that you made on your circuit.
Don´t you think that modification may brings the sound of your circuit different from the world AWARNED original Xono Pass Labs ??
Hi,
here all shematic:
Positive regulation
Negative regulation
Xono main
EDDELARUE>
For answering your question , yes it's a possibility that changing mosfet's affect the sound of the xono.
But I don't think that this will produce a worse result.
In any way, I newer had the chance to listen a real Xono form NP.
Otherwise I changed a lot of little things of the original shematic, so I don't know if mosfet's are the only factor who will change something.
I am trustful enough for the result.
The next stages will give us the response to all that .
Wait and see ...... 😀
Regards,
Alex
here all shematic:
Positive regulation
Negative regulation
Xono main
EDDELARUE>
For answering your question , yes it's a possibility that changing mosfet's affect the sound of the xono.
But I don't think that this will produce a worse result.
In any way, I newer had the chance to listen a real Xono form NP.
Otherwise I changed a lot of little things of the original shematic, so I don't know if mosfet's are the only factor who will change something.
I am trustful enough for the result.
The next stages will give us the response to all that .
Wait and see ...... 😀
Regards,
Alex
Up and running 😀
Hi all,
Some news from my XOno.
Now I'm happy because I can say that I have a working xono at home 😀
The main PCB comes from www.eurocircuits.com :
I took more than 9H to finish this PCB :
For the PSU board it was quite faster, less than 1H:
After having checked all important points, I performed the last week a real test with some measurements.
I made all my measurements with a signal generator and an oscilloscope.
The input signal was a sinusoidal one with 20mVpp@1.1KHz.
Of the following pic you can see the result (the small signal is the impute and the big one the output)
To resume, we have an input signal with 0.20mVpp@1.1KHz and an output signal with 2Vpp.
So the gain is approximately of 60dB for the MM stage.
Otherwise this Xono sound very good: a lot of details, a very good dynamic and a large and deep scene.
It is not 100x better that my Grado PH1 but the sound is clearly and definitively better.
Again thanks to NP for this very nice schema 😀
Regards,
Alex
Hi all,
Some news from my XOno.
Now I'm happy because I can say that I have a working xono at home 😀
The main PCB comes from www.eurocircuits.com :
I took more than 9H to finish this PCB :
For the PSU board it was quite faster, less than 1H:
After having checked all important points, I performed the last week a real test with some measurements.
I made all my measurements with a signal generator and an oscilloscope.
The input signal was a sinusoidal one with 20mVpp@1.1KHz.
Of the following pic you can see the result (the small signal is the impute and the big one the output)
To resume, we have an input signal with 0.20mVpp@1.1KHz and an output signal with 2Vpp.
So the gain is approximately of 60dB for the MM stage.
Otherwise this Xono sound very good: a lot of details, a very good dynamic and a large and deep scene.
It is not 100x better that my Grado PH1 but the sound is clearly and definitively better.
Again thanks to NP for this very nice schema 😀
Regards,
Alex