Wolfson WM8740 DIR9001 PCM2706 DIY DAC - Page 2

erin · 11:40 AM

See the attached document for the different series of caps that Elna makes.
Or download the Elna catalog here

cobretti · 24th April 2011, 12:11 PM

Quote:

Originally Posted by erin

Can you possibly qualify this statement with a photo, or a reason for this comment? I am curious to know about Elna fakes. I didn't realise there were Elna fakes. Thanks.

I had fake motorola transistors before, also Duracell NiMh batteries, ON semi stabilizers, those are already in dumpster. You can read net throughout about forging semiconductors and other parts in China.

cobretti · 24th April 2011, 12:15 PM

These look different, don't they?
Welborne Labs ELNA Capacitors

cobretti · 24th April 2011, 12:46 PM

BTW, I just found out that On Semi 7808, 7912, 7812 are counterfeits as well.

erin · 24th April 2011, 03:23 PM

They look like old beaten up Cerafine, and the legs are thick like Cerafine. The only way to tell would be to listen to them in circuit.
I'm well aware of counterfeit transistors.

UrSv · 24th April 2011, 03:55 PM

Quote:

Originally Posted by dtses

Already found 3 dedicated transformers home that could be used with it, however couldn't find any decent chassis, does anybody have one or know the place where it could be bought?

This?:

Chassis suggestion

dtses · 24th April 2011, 05:57 PM

thanks! that could be a good option, though not cheap taking into account dac's price.

btw, what's the point in making fake LM7808, 7912, 7812?!

cobretti · 24th April 2011, 10:27 PM

MC7808, here you go. I could quite easily separate the back side just by my fingers. No tools. All parts look suspicious to me. Lets believe Chinese don't have enough know how and technology to counterfeit DACs like WM8740 for now.

dtses · 27th April 2011, 04:34 PM

finished mine, works perfectly! Unfortunately don't have any CD player currently with digital output to compare this DAC with my good old heavily moded Philips CD350.

btw, tried to to separate back of my rectifiers and could affirm that it's quite difficult only by the fingers. Anyway, I've changed them to be safe

will post some pics once get a camera.

marchel · 29th April 2011, 03:55 PM

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24th April 2011, 12:15 PM	#13
cobretti diyAudio Member Join Date: Feb 2011 Location: Taxachusetts	These look different, don't they? Welborne Labs ELNA Capacitors

24th April 2011, 12:46 PM	#14
cobretti diyAudio Member Join Date: Feb 2011 Location: Taxachusetts	BTW, I just found out that On Semi 7808, 7912, 7812 are counterfeits as well.

24th April 2011, 03:23 PM	#15
erin diyAudio Member Join Date: Nov 2006 Location: http://www.makeitpossible.com/	They look like old beaten up Cerafine, and the legs are thick like Cerafine. The only way to tell would be to listen to them in circuit. I'm well aware of counterfeit transistors.

24th April 2011, 05:57 PM	#17
dtses diyAudio Member Join Date: Nov 2009 Location: UK, Manchester	thanks! that could be a good option, though not cheap taking into account dac's price. btw, what's the point in making fake LM7808, 7912, 7812?!

27th April 2011, 04:34 PM	#19
dtses diyAudio Member Join Date: Nov 2009 Location: UK, Manchester	finished mine, works perfectly! Unfortunately don't have any CD player currently with digital output to compare this DAC with my good old heavily moded Philips CD350. btw, tried to to separate back of my rectifiers and could affirm that it's quite difficult only by the fingers. Anyway, I've changed them to be safe will post some pics once get a camera.

29th April 2011, 03:55 PM	#20
marchel diyAudio Member Join Date: Nov 2007	subscribe...