DAC-ASH (dac-end 2 up date) - Page 30

phrarod · 9th December 2010, 10:25 PM

Sucks as I planned on doing just that and took a break to do it and --- with everything laid out carefully and cutting out the old SK's because I was worried about damaging the solder pads -- I put them in the wrong rail!! Arrrgh. I will try and carefully remove those and swap them for the others I should have replaced. Thanks. I really want to find this out. I was so proud the board looks perfect then...

phrarod · 9th December 2010, 11:14 PM

I replaced Q3 and the voltage came right uo.

So if I didn't waste those two spares I might have it working now.

Since I have order more I see there's comments about the BL which draw more current. Is there any advantage to these? I wouldn't mix and match but if I'm doing all this anyway I wondered if there's any serious sonic benefit to switching them all out?

quanghao · 10th December 2010, 02:01 AM

Hi phrarod!

You make follow the basic Circuit, not change any thing!
The DAC-ASH board , All it is easy to make it!

phrarod · 10th December 2010, 02:07 AM

So continue to use the GR version of the 2SK170?

ben-jam-in · 10th December 2010, 02:16 AM

Quote:

Originally Posted by phrarod

So continue to use the GR version of the 2SK170?

Why don't you try swapping out some of the 2sk170's in the one rail that you have left to sort out. Even try the 2sk170's that were elsewhere in the board, before you order more.

phrarod · 10th December 2010, 06:43 AM

I will but I still need to order more because I am down one. Is there any benefit of the DL over the BR?

la1209 · 10th December 2010, 12:58 PM

I've a R-core transformer stated 50VA, 0-250V(50mA) X 2; 0-7.5V(1A) X 2, is that good matched with the SSHV?

la1209 · 11th December 2010, 09:27 AM

I solve the question already, thanks!

la1209 · 11th December 2010, 09:31 AM

BL grade 2sk170 had a higher IDSS than the GR grade, the highest one should be 2sk170v

quanghao · 11th December 2010, 09:11 PM

Quote:

Originally Posted by la1209

I've a R-core transformer stated 50VA, 0-250V(50mA) X 2; 0-7.5V(1A) X 2, is that good matched with the SSHV?

If you ise for tube 6h6 or 6h30, it is no good!
For 6dj8, it is ok!
because : 6h30 and 6h6 need 800mA one filament tube, and 20mA 1/2 tube!

10th December 2010, 02:01 AM	#293
quanghao diyAudio Member Join Date: Sep 2009 Location: Vietnam Blog Entries: 2	Hi phrarod! You make follow the basic Circuit, not change any thing! The DAC-ASH board , All it is easy to make it! __________________ Group buy DAC-END R (ES9018) full assembled board update 21/5/2013 : https://docs.google.com/spreadsheet/...FE&hl=en#gid=0

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9th December 2010, 10:25 PM	#291
phrarod diyAudio Member Join Date: Aug 2005	Sucks as I planned on doing just that and took a break to do it and --- with everything laid out carefully and cutting out the old SK's because I was worried about damaging the solder pads -- I put them in the wrong rail!! Arrrgh. I will try and carefully remove those and swap them for the others I should have replaced. Thanks. I really want to find this out. I was so proud the board looks perfect then...

9th December 2010, 11:14 PM	#292
phrarod diyAudio Member Join Date: Aug 2005	I replaced Q3 and the voltage came right uo. So if I didn't waste those two spares I might have it working now. Since I have order more I see there's comments about the BL which draw more current. Is there any advantage to these? I wouldn't mix and match but if I'm doing all this anyway I wondered if there's any serious sonic benefit to switching them all out?

10th December 2010, 02:07 AM	#294
phrarod diyAudio Member Join Date: Aug 2005	So continue to use the GR version of the 2SK170?

10th December 2010, 06:43 AM	#296
phrarod diyAudio Member Join Date: Aug 2005	I will but I still need to order more because I am down one. Is there any benefit of the DL over the BR?

10th December 2010, 12:58 PM	#297
la1209 diyAudio Member Join Date: May 2006	I've a R-core transformer stated 50VA, 0-250V(50mA) X 2; 0-7.5V(1A) X 2, is that good matched with the SSHV?

11th December 2010, 09:27 AM	#298
la1209 diyAudio Member Join Date: May 2006	I solve the question already, thanks!

11th December 2010, 09:31 AM	#299
la1209 diyAudio Member Join Date: May 2006	BL grade 2sk170 had a higher IDSS than the GR grade, the highest one should be 2sk170v