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Old 29th March 2007, 11:02 PM   #21
snoxu is offline snoxu  Portugal
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Hello everyone, I'm thinking of purchasing this unit some time soon.

Can someone here mask a list of mods that are worthwhile and which are not.

Also interested in zanash's mods where he bypassed (what ever he bypassed lol) to get an unbalanced signal to output to standard consumer level amps. Wondering if that also takes care of the output levels.

Also, are these mods someone with no experience could undertake or am I better trying to find someone to do them for me.
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Old 28th November 2007, 09:59 AM   #22
back is offline back  Greece
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Quote:
Originally posted by zanash
there's loads of space in the case .....

yes I've taken the unbalanced signal from the opamp after the dac via large pio caps ....this improves the sound lifting to a higher level. [my preamp doesn't have balanced inputs ] So I felt there was no need to run the signal through the extra stages.
hello zanash.

did you take the sinal before or after the first opamp?

i have take it after the first opamp from the 47uf decoupling caps and i have ground loops problems.

did you have any?
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Old 28th November 2007, 02:29 PM   #23
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Default french mods for DCX

hello,
there is a new mods coming soon for replacing the CS8020 in the DCX, and feat the input with AES/EBU or SPDIF;should be work in the SRC...
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Old 4th February 2009, 12:30 PM   #24
lga775 is offline lga775  Malaysia
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Default replacing ak4393 with ak4396

what is the difference between the decoupling of cs8420 in pin6 and 7?
why do we need to decouple it?

do you think ak4396 will better than ak4393?
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Old 4th February 2009, 03:49 PM   #25
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Default Re: replacing ak4393 with ak4396

Quote:
Originally posted by lga775
do you think ak4396 will better than ak4393?

The AKM4396 is definitely superior to the AKM4396 in every regard. The chips are also pin compatible.

-David
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Old 4th February 2009, 08:26 PM   #26
lga775 is offline lga775  Malaysia
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Default pushing the SRC2496 to the MAX possible quality in D/A function

What things do i need to mod in order to push the src 2496 to the max possible SQ as D/A purpose? Now in my mind is,

1. Ak4396 Dac
2. Burson Opamp in D/A
3. Replace clock unit
4. Toroidal transformer

can i add extra analog RCA output? because i dun use XLR...
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Old 4th February 2009, 08:26 PM   #27
lga775 is offline lga775  Malaysia
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Default pushing the SRC2496 to the MAX possible quality in D/A function cont'

5. Recap all the capacitor with Rubycon
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Old 4th February 2009, 11:29 PM   #28
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There is quite a bit of discussion regarding the Burson discrete op amp with mixed results. Save yourself some money and try a higher quality op amp IC first. Have a look at what others have already done in this regard.

Just a suggestion before spending a lot of money.

-David
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Old 6th February 2009, 02:42 AM   #29
sendler is offline sendler  United States
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Default DEQ is easier to mod for direct out

I use a stock SRC for upsampling and send digital to a modified DEQ. The DEQ is easier to mod by stealing the analog outputs of the dac because it has a ribbon cable which can be cut into. definitely get someone to swap the dac chip to an AK4396 which will drop in with no problems. And then consider running direct out from the ribbons to a good transformer or cap to block the dc. No ultrasonic filters required because of the ultra low out of band noise spectrum of the top of the line AKM dacs. This eliminates four or five opamps doing dif amp summing, active filter, mute, phase splitter and servo swinging output and some electrolytic signal coupling caps. I sold my Sowter transformers as I prefer a stack of Dayton foil caps. I also have a slight preference for the 4395 but it requires an additional 5v regulator whereas the 4396 runs well on the stock 3.3v making it a drop in. As long as you are good at soldering with a 10x microscope strapped to your eye. Plus, if you start out with a DEQ you have a digital eq that once you try it you will never want to live with out it.
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Old 23rd February 2009, 02:02 AM   #30
data is offline data  Australia
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Default Opamps?

Hay guys

I have the SRC2496 and tried taking the signal from the DAC via the R+ &L+ legs on the chip, then through a pair or passive audio transformers, but there was lots of distortion

So now I'm looking at replacing the opamps, only the ones that will be in use, I am taking the signal from where the C25 & C26 caps were before the balanced stage and then through the transformers.

I intend using AD8066 opamps.

There are six opamps in the output stage and am a little confused

So, which opamps do I need to swap out?

Cheers.
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