DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 153 - diyAudio
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Old 5th April 2012, 12:46 PM   #1521
50AE is offline 50AE  Bulgaria
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If you guys are going to build the cathode broskie follower only, there won't be voltage amplification so there's a chance the signal will be very low. The first stage in the unbalancer is to voltage amplify the DAC output.

I built both but I upgraded to the unbalancer because of lack of amplification. Both sound great.
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Old 5th April 2012, 01:01 PM   #1522
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Originally Posted by sterlingmck View Post
Having started working with a kit, not an assembled unit, after the experiment was working .There was a lot of spare parts

Just remove the 4 resisters that pass the I2S bus to the DAC and link the I2S bus from the USB convertor
I used the resisters that were to fit in that location.(I don't really think the the resister are needed, links would do)
Keep the lenghts of the links short
I2S is the link I hoped to use on interface with this DAC. Problem seems to be that I2S links need to be short, which is physically impossible if you don't put the DAC inside the DAC or DVD or CD player. That certainly sort of limits using it with different players.

If you have any suggestion on how to solve that, adding I2S output interfaces on players that would allow longer cables, like a buffer or something, that should be great.
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Old 5th April 2012, 01:11 PM   #1523
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The bit teleporter will do that for you...

Teleporter Digital Transfer Module
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Old 5th April 2012, 03:34 PM   #1524
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Thanks. It looks very good.
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Old 7th April 2012, 02:22 PM   #1525
bcmbob is offline bcmbob  United States
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Am I correct in assuming (I did browse the thread) that there is no need to add any jumpers or cut any traces when applying Dario's upgrade BOM? I'd rather ask a silly question than see green smoke.

Also would appreciate a little more info on the Brown Dog mod. Soldering is completed but I only found one reference to the bypass cap.

Thanks
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Old 7th April 2012, 02:37 PM   #1526
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Originally Posted by bcmbob View Post
Am I correct in assuming (I did browse the thread) that there is no need to add any jumpers or cut any traces when applying Dario's upgrade BOM? I'd rather ask a silly question than see green smoke.

Also would appreciate a little more info on the Brown Dog mod. Soldering is completed but I only found one reference to the bypass cap.

Thanks
yes, you don't need to cut or jump any traces, when applying Dario's BOM
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Old 7th April 2012, 02:49 PM   #1527
bcmbob is offline bcmbob  United States
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Thanks idjoel2000. I'm off to the soldering station.
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Old 7th April 2012, 02:58 PM   #1528
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Originally Posted by bcmbob View Post
Also would appreciate a little more info on the Brown Dog mod. Soldering is completed but I only found one reference to the bypass cap.
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...
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Last edited by ClaveFremen; 7th April 2012 at 03:02 PM.
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Old 7th April 2012, 03:18 PM   #1529
bcmbob is offline bcmbob  United States
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Thanks Dario, I will do the 50 hr comparison.
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Old 7th April 2012, 09:02 PM   #1530
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Hi, I have my unmodded DAC running into my Exposure preamp's tuner input which is marked 10K.
Is this a good match or could I mod the amp to match it better.
cheers
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