DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 88 - diyAudio
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Old 8th November 2011, 06:41 PM   #871
Giobax is offline Giobax  Italy
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Join Date: Jun 2009
Location: Siena, Italy
nice job apoopoo999! Please..... can you tell me what are the current on each PSU? I'm working at "Salas Shunt" for this dac and need to size the heatsink...

Thanks and forgive my horrible english.

Giovanni
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Old 14th November 2011, 08:57 AM   #872
Radian is offline Radian  Germany
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Location: Wiesbaden
Quote:
Originally Posted by wushuliu View Post
I like the witty end touches.

The AK4396 as I understand it is designed to emulate the older multibit dacs, it is not the same as cs4398, etc - hence the 'miracle dac' tag associated with it. At least that is the perspective AKM has taken of their design. If you disagree with the categorization, what can I say. I believe they succeeded based on my comparisons.

And note I said 'like the cs4398, etc. ' earlier.
Well said.
The beauty of the AKM 439x is the simple steps to get it soundig fantastic.
Nothing except a cap is needed after the Dac. Try this with any CS Vout dac. But if one puts a Lampizator after the 4396, the CS offerings can not
compete.
I am all for a shootout if one comes up with a good locaton here in Europe.
I have yet to try the AK4399 that Lukazs uses now with his Lampizator.

Greets,
Klaus
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Old 14th November 2011, 09:44 AM   #873
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Quote:
Originally Posted by Radian View Post
Well said.
The beauty of the AKM 439x is the simple steps to get it soundig fantastic.
Nothing except a cap is needed after the Dac. Try this with any CS Vout dac. But if one puts a Lampizator after the 4396, the CS offerings can not
compete.
I am all for a shootout if one comes up with a good locaton here in Europe.
I have yet to try the AK4399 that Lukazs uses now with his Lampizator.

Greets,
Klaus

It's not easy to find THE CAP which give you good results !!!!

What do you mean by Lampizator, the U output tube stage ?

What is the best investment for the output stage ,Burson AUDIO AOP or the Lampizator ?

Thanks

Serge
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Old 14th November 2011, 06:49 PM   #874
smithie is offline smithie  United Kingdom
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Location: cornwall
hi
guys,interesting thread,ive just read all the pages.
i had a beringer ultracurve and loved the sound of that so would be very intrested in trying this dac.
but what i would like to do is hook the dac up directly yo a cd player.
i have a rotel 951 that uses the pmd100 hdcd chip...does anyone know if the this dac can accept the pmd output directly doing away with the cysrtal input chip???
failing that i have another cdp that has i2s output,can this dac except that?
any help would be appricated,either way i shall give this dac a go with the mods discribed here...good work everyone and thanks for sharing!!
all the best
smithie
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Old 15th November 2011, 07:19 AM   #875
Radian is offline Radian  Germany
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Quote:
Originally Posted by Sergelisses View Post
It's not easy to find THE CAP which give you good results !!!!
Yes, but that is the challenge with all dacs.

Quote:
Originally Posted by Sergelisses View Post
What do you mean by Lampizator, the U output tube stage ?
Yes.
The beauty of the Lampizator is, that it is very easy to build with little
investment. This minimal design is no slack either. Lucazs has done a
massive amount of trial and errror and compares his works with very good
equipment that his friends own. AudioNote Dac 2 and 3 for instance. He is a
trustworthy person that is not sold to any technology, be it tube or solid
state and also not to his own designs.

I would go with a micro Lampizator for the AK4396. I bought the tubes for
just a few Euros on Bay.

Quote:
Originally Posted by Sergelisses View Post
What is the best investment for the output stage ,Burson AUDIO AOP or the Lampizator ?
I got no experience with the Burson, but I doubt it will be close to the Lampizator.
The investment for the Bursons is way higher also.

Klaus
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Old 15th November 2011, 07:44 AM   #876
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Hi Klaus

Do you have a BOM and diagram for the Lampizator?

/Bjarne
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Old 17th November 2011, 12:45 PM   #877
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Location: Perth, Australia
Quote:
Originally Posted by df_genius View Post
Hi all, I've built one of the AK4393 boards using Coffin regs for all the regs - 2 x 3.3, one 5V and +/-12V for the op-amp. The Error light and the 96k light come on straight away "No Audio" is not lit. No sound. I'm using the 100nF bypass cap holes to apply power. The regs are working fine, the 3.3V regs are supplying 3.25V and the 5V is 4.95V. Any ideas where to look? I have used these regs a few times on DACs and they have good rise times.
Hi,

I have done a similar thing to df_genius with discrete regs for each chip, also applying power through the cap holes. All regs are functional and supply correct voltage. All +ve voltages go to the correct supply rails and I have traced the +ve to the correct pin on each chip. All grounds check out and there is no obvious mistake and no obvious dry joints or shorts or open tracks. I have checked the thing a dozen or more times (and with a magnifying glass) but no sound.

Direct out though 47R resistors and 10uF BGs. There is a DC offset of about 2.6V on each AOUT resistor and none at the output jack.

The power on LED lights but no other LED. Or I should say, when I first powered it up, the Error light and the 96k light come on straight away but the No Audio was not lit. I connected it to a DVD digital out and no sound. The only led that came on was the power. I tried a couple of different digital cables with same result. Borrowed a CD player with digital out and the same problem. No sound, no leds alight except power.

I have a suspicion that the CS8416 is dead but I don't have a scope to check. Is there a way to check it with a multimeter?

Any ideas?
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Old 17th November 2011, 01:12 PM   #878
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Check if the 3.3v for the 74HC04 is good

Serge
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Old 17th November 2011, 01:35 PM   #879
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Quote:
Originally Posted by Sergelisses View Post
Check if the 3.3v for the 74HC04 is goodSerge
Yes, 74HCO4 supply measures 3.29V so is okay. I have left that regulator as the LT1117 supplied with the DAC kit, but isolated it from other chips. It supplies only 74HC04.
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Old 17th November 2011, 05:13 PM   #880
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Location: sheffield , uk
Has anybody experimented with different rectifiers/discrete diodes ?
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