DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 257 - diyAudio
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Old 8th June 2013, 10:33 PM   #2561
bcmbob is offline bcmbob  United States
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This link and the following four or five have a link to buy the module and all the necessary install info.
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Old 14th June 2013, 03:06 PM   #2562
Trileru is offline Trileru  Romania
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Anyone built the shunt on Dario's google drive? As I see the schematic you need to remove the Silmics. Also could it be integrated on board? Not much space on pcb. Also if it's worth the trouble for the outcome.
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Old 9th July 2013, 04:01 PM   #2563
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Quote:
Originally Posted by ClaveFremen View Post
Hi Bob, the upgrade BOM requires only components swapping, no trace cuts or bridges.

The OPA827 10nF bypass should be mounted on pin 4 and 8 of the browndog.

I've recently discovered that OPA827 changes a lot as time passes in the bass firmness (the bypass is there for that reason), BTW the bypass don't hurt.

Maybe you could start with the bypass and remove it after 50 hours so you can say us if it's really needed...
Is it just the single 10nF bypass required for this? The latest BOM calls for quantity 2, so is there another 10nF underneath the Browndog as well?
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Old 9th July 2013, 05:16 PM   #2564
bcmbob is offline bcmbob  United States
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Are you confusing this setup with the mod with on the PCB?
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Last edited by bcmbob; 9th July 2013 at 05:20 PM.
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Old 9th July 2013, 06:20 PM   #2565
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Quote:
Originally Posted by westers151 View Post
Is it just the single 10nF bypass required for this? The latest BOM calls for quantity 2, so is there another 10nF underneath the Browndog as well?
No...

you'll need two because one goes in C1 (SPDIF coupling), the other on the browndog.
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Old 9th July 2013, 07:04 PM   #2566
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Ah, I see, thanks Clave.

Thanks Bob.
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Old 10th July 2013, 07:38 PM   #2567
atupi is online now atupi  Romania
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Quote:
Originally Posted by Trileru View Post
Anyone built the shunt on Dario's google drive? As I see the schematic you need to remove the Silmics. Also could it be integrated on board? Not much space on pcb. Also if it's worth the trouble for the outcome.
Of course it worth the effort but the most elegant way is to add a small pcb as there is no so much space on the DAC pcb.
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Old 20th July 2013, 07:56 AM   #2568
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Default About that TOSLINK module

Like Ch33ta said in this post:
DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532

"The CS8416 receiver input pins are not RS-422
compliant; the receiver input absolute maximum
voltage range is 12 V for the CS8413/14 and
-0.3 V to VL + 0.3 V for the CS8416."
http://www.cirrus.com/en/pubs/appNote/AN339REV1.pdf‎

"Input signals with voltage levels above VL or
below DGND may degrade performance or damage the part."
http://www.cirrus.com/jp/pubs/proDat.../CS8416_F3.pdf

So some toslink modules need TTL -> SPDIF conversion with this dac.
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Old 22nd July 2013, 02:38 PM   #2569
tnt76 is offline tnt76  Italy
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Anyone tried to connect directly to the amp this DAC?
I mean with a virtual ground obtained with a couple of resistor between AVDD and AVSS like someone suggest here.

I've built an F5 clone with no analog input, just toslink and spdif ("Gigawork" DAC ,transformer output). Actually i'm waiting for a board with AK4396 and i would like to test this option...

Off course, ground for the DAC are completely isolated from ground of ampli.
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Old 22nd July 2013, 10:04 PM   #2570
tnt76 is offline tnt76  Italy
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I can give me an answer alone!

I've just tried with my actual CS4398, and the sound is no so good as someone can imagine. I think the absence of LPF degrade the output signal a lot.

The sound is poor, no feelings and with less 3D scene respect to the transformer output.
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