DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 135

PsychoDogBeast · 18th March 2012, 07:57 PM

Hi there

Ive been having a good mess around with my dac, done nearly all of Claves BOM mods and it sounds fantastic.

Ive decided to go and swap the op amp too, im currently using a LM4562 (i think) bought off ebay for a bargain £3, it sounds really good too, ive recently modified my brothers Marantz CD10 with a pair of Burr Brown OP627BP op amps and decided to do the same to my DAC, unfortunately due to rushing ive bought a pair of OP637BP's instead, at least they are genuine ones.

Would anyone know if i can shove them in my DAC, or is the gain of the DAC high enough to keep the 637's stable?

Many thanks in advance for any help

James

carlmart · 18th March 2012, 08:14 PM

James,

I'm sorry to say, but you do need a gain-1 stable chip there, and the 637 can't do that.

You do need a 627.

PsychoDogBeast · 18th March 2012, 10:00 PM

Hi there Carlmart

Many thanks for letting me know, he ho, they were only £19 so its no great loss

Thanks again

James

bcmbob · 19th March 2012, 11:34 AM

Dario, you mentioned the addition of a shunt regulator for this DAC over on the MyRef Integrated thread and I assumed you were referring to the Unbalancer. After reading through the thread I'm not so sure anymore.

Did you complete/publish this project from post #1125 - "In the next weeks I'll post a new shunt PS schematic, simpler than Salas one, which gave me great results with the My_Ref"?

I'm a little lost here in my search for the "latest and greatest".

ClaveFremen · 19th March 2012, 01:24 PM

Quote:

Originally Posted by bcmbob

Did you complete/publish this project from post #1125 - "In the next weeks I'll post a new shunt PS schematic, simpler than Salas one, which gave me great results with the My_Ref"?

Exactly, I've the intention, but didn't found the time yet, to adapt My_Ref Fremen Edition's PS to the MINI2496.

Quote:

Originally Posted by bcmbob

I'm a little lost here in my search for the "latest and greatest".

Apart the various output approaches (direct, transformers, valves) different from opamp LPF all the rest can be found on my Google Docs folder.

Nosian · 19th March 2012, 07:24 PM

yes Dario please I'm very eager to see your psu for this dac too.

Giobax · 09:17 PM

Hi folks.
regarding this dac with shunt PSU, this is mine:

4x Salas shunt (+12V and -12 for Opa, +5V and +3,3V for analog) and 2 separate 3,3V for AK4393 and CS8416 digital section (lm7812 + lm1117).
Modded at 90% in according of Dario's BOM, OPA827 in output.

Giovanni

nouse · 20th March 2012, 01:20 AM

Anybody else having trouble getting a signal lock from spdif. sometimes it work and sometimes it dont. anybody got a clue? Ihave a oscon 180uF at position C3 . C1 C2 C5 c36 stock.

When it work it sounds pretty good ). I run it passive out through some Jensen PIO 4uF .

idjoel2000 · 20th March 2012, 03:45 AM

Quote:

Originally Posted by Giobax

Hi folks.
4x Salas shunt (+12V and -12 for Opa, +5V and +3,3V for analog) and 2 separate 3,3V for AK4393 and CS8416 digital section (lm7812 + lm1117).
Modded at 90% in according of Dario's BOM, OPA827 in output.

Giovanni

impression pleaasee pleasseee.. pretty pleaaseee

ClaveFremen · 20th March 2012, 08:53 AM

Quote:

Originally Posted by Giobax

Hi folks.
regarding this dac with shunt PSU, this is mine:

Ciao Giovanni,

it's nice to see you here.

19th March 2012, 11:34 AM	#1344
bcmbob diyAudio Member Join Date: Dec 2009 Location: Bay City, Michigan	Dario, you mentioned the addition of a shunt regulator for this DAC over on the MyRef Integrated thread and I assumed you were referring to the Unbalancer. After reading through the thread I'm not so sure anymore. Did you complete/publish this project from post #1125 - "In the next weeks I'll post a new shunt PS schematic, simpler than Salas one, which gave me great results with the My_Ref"? I'm a little lost here in my search for the "latest and greatest". __________________ Bob M. "Arrange Whatever Pieces Come Your Way."

19th March 2012, 09:11 PM	#1347
Giobax diyAudio Member Join Date: Jun 2009 Location: Siena, Italy	Hi folks. regarding this dac with shunt PSU, this is mine: 4x Salas shunt (+12V and -12 for Opa, +5V and +3,3V for analog) and 2 separate 3,3V for AK4393 and CS8416 digital section (lm7812 + lm1117). Modded at 90% in according of Dario's BOM, OPA827 in output. Giovanni Last edited by Giobax; 19th March 2012 at 09:17 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
AK4393 burn...	CIMONE	Digital Line Level	5	24th June 2011 02:12 PM
AK4393 to CS4223?	CIMONE	Digital Line Level	0	13th December 2009 02:30 PM
AK4393 Serial Configuration Problem	Aoxomox	Digital Line Level	0	20th March 2009 05:25 PM
AK4393, CS8413 and CS8414 Data Sheets	Blue_Max	Digital Source	0	23rd December 2004 01:37 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th March 2012, 07:57 PM	#1341
PsychoDogBeast diyAudio Member Join Date: Jan 2012 Location: Huddersfield	Hi there Ive been having a good mess around with my dac, done nearly all of Claves BOM mods and it sounds fantastic. Ive decided to go and swap the op amp too, im currently using a LM4562 (i think) bought off ebay for a bargain £3, it sounds really good too, ive recently modified my brothers Marantz CD10 with a pair of Burr Brown OP627BP op amps and decided to do the same to my DAC, unfortunately due to rushing ive bought a pair of OP637BP's instead, at least they are genuine ones. Would anyone know if i can shove them in my DAC, or is the gain of the DAC high enough to keep the 637's stable? Many thanks in advance for any help James

18th March 2012, 08:14 PM	#1342
carlmart diyAudio Member Join Date: Mar 2001 Location: Brazil	James, I'm sorry to say, but you do need a gain-1 stable chip there, and the 637 can't do that. You do need a 627.

18th March 2012, 10:00 PM	#1343
PsychoDogBeast diyAudio Member Join Date: Jan 2012 Location: Huddersfield	Hi there Carlmart Many thanks for letting me know, he ho, they were only £19 so its no great loss Thanks again James

19th March 2012, 07:24 PM	#1346
Nosian diyAudio Member Join Date: Jun 2011	yes Dario please I'm very eager to see your psu for this dac too.

20th March 2012, 01:20 AM	#1348
nouse diyAudio Member Join Date: Feb 2010	Anybody else having trouble getting a signal lock from spdif. sometimes it work and sometimes it dont. anybody got a clue? Ihave a oscon 180uF at position C3 . C1 C2 C5 c36 stock. When it work it sounds pretty good ). I run it passive out through some Jensen PIO 4uF .