OLD THREAD DAC End by Andrea Ciuffoli

adamus · 2010-02-10 9:57 pm

unless you go for nude metal foils......

I may have spent way to much on the resistors... oops!

apelizzo · 2010-02-10 9:58 pm

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

Thanks for checking me on those. It was a little confusing. If you follow the values on PCB one would end up installing 4 x 33R which is not right.

adamus · 2010-02-10 10:04 pm

no probs. I have all my boars stuffed, I'll post pics tomorrow so you lot can spot any errors.

frd__ · 2010-02-10 10:06 pm

apelizzo said:
That's perfect for R23 and R24 on DAC board

Thanks

I was reading the datasheet and it seems the difference between MK132 and MK132V is the case (enclosure).

Cheers,
F.

apelizzo · 2010-02-10 10:06 pm

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

Where do you buy obligato gold capacitors?

For input coupling cap I use GAD-Viva MKP 0.01uF
For output I try Sprague "Q" PIO vs an MKP maybe Clarity.
Any suggestion?

adamus · 2010-02-10 10:12 pm

obbligato golds:
Obbligato Premium Film 1.0uF 630V | Diy HiFi Supply

Once i test the Z-foil resistors i will share my source. I get the impression they are hand made from Vishays

quanghao · 2010-02-10 11:08 pm

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

no late, The Salas shunt I have some board, If you want sent me by e-mail
thank!
quanghao

Jason · 2010-02-10 11:25 pm

Donation of $80 received from quanghao. Thank you.

CustomHT · 2010-02-11 7:41 am

So I've just ordered a couple of the Shunt PCB's from this thread for use in another Dac..

Since this is my first PCB build I'm looking over the parts list and was wondering what brand/type of resistors, caps and other components should I use??

I want good performance without paying silly prices if you know what I mean..

apelizzo · 2010-02-11 11:06 am

CustomHT said:
So I've just ordered a couple of the Shunt PCB's from this thread for use in another Dac..

Since this is my first PCB build I'm looking over the parts list and was wondering what brand/type of resistors, caps and other components should I use??

I want good performance without paying silly prices if you know what I mean..

Well... if you are in Australia if you like I got the following:

Heat sinks, leds, screw terminals you can buy from Jaycar.
Resistors: Vishay-Dale RN55 1/4W (ebay)
Electrolytic Capacitors 4700uF Elna and 220uF Elna Silmic (ebay)
2sk170 Toshiba (ebay)
FARNELL FREE SHIPPING FOR INTERNET ORDERS
Trimmer Vishay from Farnell code 9608702
0.1uF caps Vishay BC fro Farnell code 1215508
BC 550B FAIRCHILD SEMICONDUCTOR Farnell code 1467880
BC560C FAIRCHILD SEMICONDUCTOR Farnell code 1467886
IRFP9240PBF INTERNATIONAL RECTIFIER Farnell 1653670
IRFP240PBF INTERNATIONAL RECTIFIER Farnell 1463256
56R 2W VISHAY DALE Farnell 1155017
1N5062-TR VISHAY SEMICONDUCTOR Farnell 1612313
LM338T NATIONAL SEMICONDUCTOR Farnell 1469094

I hope it helps.

erwincantona · 2010-02-11 12:11 pm

apelizzo said:
Well... if you are in Australia if you like I got the following:

Heat sinks, leds, screw terminals you can buy from Jaycar.
Resistors: Vishay-Dale RN55 1/4W (ebay)
Electrolytic Capacitors 4700uF Elna and 220uF Elna Silmic (ebay)
2sk170 Toshiba (ebay)
FARNELL FREE SHIPPING FOR INTERNET ORDERS
Trimmer Vishay from Farnell code 9608702
0.1uF caps Vishay BC fro Farnell code 1215508
BC 550B FAIRCHILD SEMICONDUCTOR Farnell code 1467880
BC560C FAIRCHILD SEMICONDUCTOR Farnell code 1467886
IRFP9240PBF INTERNATIONAL RECTIFIER Farnell 1653670
IRFP240PBF INTERNATIONAL RECTIFIER Farnell 1463256
56R 2W VISHAY DALE Farnell 1155017
1N5062-TR VISHAY SEMICONDUCTOR Farnell 1612313
LM338T NATIONAL SEMICONDUCTOR Farnell 1469094

I hope it helps.

you're very kind...
thanks for sharing....

CustomHT · 2010-02-11 12:16 pm

apelizzo said:
Well... if you are in Australia if you like I got the following:

Heat sinks, leds, screw terminals you can buy from Jaycar.
Resistors: Vishay-Dale RN55 1/4W (ebay)
Electrolytic Capacitors 4700uF Elna and 220uF Elna Silmic (ebay)
2sk170 Toshiba (ebay)
FARNELL FREE SHIPPING FOR INTERNET ORDERS
Trimmer Vishay from Farnell code 9608702
0.1uF caps Vishay BC fro Farnell code 1215508
BC 550B FAIRCHILD SEMICONDUCTOR Farnell code 1467880
BC560C FAIRCHILD SEMICONDUCTOR Farnell code 1467886
IRFP9240PBF INTERNATIONAL RECTIFIER Farnell 1653670
IRFP240PBF INTERNATIONAL RECTIFIER Farnell 1463256
56R 2W VISHAY DALE Farnell 1155017
1N5062-TR VISHAY SEMICONDUCTOR Farnell 1612313
LM338T NATIONAL SEMICONDUCTOR Farnell 1469094

I hope it helps.

Thanks thats a huge help..

CustomHT · 2010-02-11 12:18 pm

apelizzo said:
Well... if you are in Australia if you like I got the following:

Heat sinks, leds, screw terminals you can buy from Jaycar.
Resistors: Vishay-Dale RN55 1/4W (ebay)
Electrolytic Capacitors 4700uF Elna and 220uF Elna Silmic (ebay)
2sk170 Toshiba (ebay)
FARNELL FREE SHIPPING FOR INTERNET ORDERS
Trimmer Vishay from Farnell code 9608702
0.1uF caps Vishay BC fro Farnell code 1215508
BC 550B FAIRCHILD SEMICONDUCTOR Farnell code 1467880
BC560C FAIRCHILD SEMICONDUCTOR Farnell code 1467886
IRFP9240PBF INTERNATIONAL RECTIFIER Farnell 1653670
IRFP240PBF INTERNATIONAL RECTIFIER Farnell 1463256
56R 2W VISHAY DALE Farnell 1155017
1N5062-TR VISHAY SEMICONDUCTOR Farnell 1612313
LM338T NATIONAL SEMICONDUCTOR Farnell 1469094

I hope it helps.

Thanks for that..
Really appreciate it.

apelizzo · 2010-02-11 1:58 pm

CustomHT said:
Thanks thats a huge help..

All welcome.

Note the 56R you need 6 as you need to parallel on position R1, R7, R13 to obtain 28R. I had to juggle a lot on Farnell website to get the most reasonable component without having to buy 10 pieces if you need 2 or 3.

If anybody need codes for other boards let me know.

CustomHT · 2010-02-11 2:02 pm

With the green led's, are they just a 3mm led like this one:

apelizzo · 2010-02-11 2:04 pm

adamus said:
obbligato golds:
Obbligato Premium Film 1.0uF 630V | Diy HiFi Supply

Once i test the Z-foil resistors i will share my source. I get the impression they are hand made from Vishays

Obbligato cap.. very interesting. I've read the reviews and comparison and it looks like is the best for the money. Pretty close to the best Clarity at 1/4 of the price. I like when the guy described the sound as "analog".

adamus · 2010-02-11 2:52 pm

I can vouch for them, had good success with the 2.2uf and the 0.22uf.

Ekkeri · 2010-02-11 3:20 pm

audiodesign said:
About the input transformer...
- Scientificonversion SC947-02 with interwinding shield to reduce interwinding capacitance 16$ each

Any source for this? 16$ from where?

apelizzo · 2010-02-11 10:07 pm

Ekkeri said:
Any source for this? 16$ from where?

I've got something equivalent:
DA101C MURATA POWER SOLUTIONS Farnell code 1362398 $5.25

apelizzo · 2010-02-11 10:09 pm

CustomHT said:
With the green led's, are they just a 3mm led like this one:

I got plain diffused 5mm green leds from Jaycar. You can also find from Farnell

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