OLD THREAD DAC End by Andrea Ciuffoli

[sugden]

Hi Quanghao, I have received the PCBs today, it look excellent. Thanks for your effort to organize the GB.

Best Regards
MartinTie

 

[erwincantona]

Hi Quanghao, I have received the PCBs today, it look excellent. Thanks for your effort to organize the GB.

Best Regards
MartinTie

Congrats, bro...

 

[Tea-Bag]

Still waiting. I'm patient.

 

[sugden]

Hi Quanghao, today i have bought 0.1uF Wima capacitors for power supply of IV stage C1 to C4.( in the picture below). Do you know, can this capacitor withstand the voltage?
Thanks

 

[quanghao]

Hi Quanghao, today i have bought 0.1uF Wima capacitors for power supply of IV stage C1 to C4.( in the picture below). Do you know, can this capacitor withstand the voltage?
Thanks

no! it is 250v! not enought voltage, about 400v

 

[audiodesign]

Wima capaciotrs are not the top but enough good if you use MKP but please don't use MKS.

I consider very good the Auricap but these are very expensive.

My first choice for any interstage use is the Jensen Copper film in paper oil.

In my Pre Phono 4 I have used the Wima MKP but someone got better result with Solen and SCR.

 

[adamus]

for the coupling caps i am going with obbligato golds. . very neutral to my ears.

 

[apelizzo]

Hi Quanghao, today i have bought 0.1uF Wima capacitors for power supply of IV stage C1 to C4.( in the picture below). Do you know, can this capacitor withstand the voltage?
Thanks

I agree with audiodesign about Wima caps. They sound thin, dry, sharp. Don't use MKS.

If you really want to use the one in the picture you can the voltage is enough.

Quanghao the 250V~ is AC that means they can handle 400V DC easy.

 

[apelizzo]

Salas Shunt Board Ready

Salas Shunt Board Ready

 

[quanghao]

Salas Shunt Board Ready

Look good! you conect to AC??? what is about the led??

 

[adamus]

Salas Shunt Board Ready

did you use 2x 33r or parallel 2x 66 - 68r.

I used 1 33r 2w resistor.

 

[apelizzo]

Look good! you conect to AC??? what is about the led??

I will try AC tomorrow. I just finished and now I go to bed.

 

[quanghao]

m

 

[apelizzo]

did you use 2x 33r or parallel 2x 66 - 68r.

I used 1 33r 2w resistor.

I used two dale 2W 56R parallel opposite orientation.
Farnell 1155017

 

[quanghao]

did you use 2x 33r or parallel 2x 66 - 68r.

I used 1 33r 2w resistor.

Only use one R 27 Ohm/2W, or one 33 ohm/2W for CCS of Salas shunt. if use 33R// = 16 Ohm, the curent is lager, it not need that!

 

[adamus]

yes, i was just checking apelizzo did that, and he did. I used 1 33r 2watt kiwame.

 

[adamus]

no! it is 250v! not enought voltage, about 400v

250v ac is approximately 400vdc, thats should be enough for this position, the plates are at 180v.

 

[frd__]

Just quick one about I/V resistors: do Caddock MK132V 200R suit?

 

[CustomHT]

Is it still possible to buy 2 of the salas shunt boards? or is it too late?

 

[apelizzo]

Just quick one about I/V resistors: do Caddock MK132V 200R suit?

That's a good choice for R23 and R24 on DAC board