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Hotrodding the X-Fi: A Layman's Guide (No 56k) - Page 42

post #616 of 2194
no, i would recommend you to place your card as far away as possible from the power source and graphic card. I believe those two are the main magnetic wave distributer in a computer.
post #617 of 2194
Okay,fine if you guys hear a difference subjectively.My comments on the capacitance are based purely on data sheets and online articles about Voltage Regulators . Great if it makes things sound better to ya.

And,Codt...I'll post the 0.1uF capacitor mod l8r, after I have done with my college exams.In the mean time,maybe you would like to read the data sheets of the DAC and the +/- 5 V regulators on the card. Look up the part numbers of these components on the card and Google.
post #618 of 2194
Quote:
Originally Posted by Herbal View Post
It's a general known fact that a cleaner and more stable DC current in audio systems is of great benefit.

Perhaps GorE made the power cap replacement and didn't notice any difference due to A) his equipment setup or B) difference between the way people work!

I've definately noticed a difference, forum members have noted a difference and people visiting me have noticed a difference and this is just from replacing the power cap.

GorE - instead of just stating that everyone else is subjected to a placebo effect either prove that there is no audible benefit or please just don't comment on it.

Also...you waffle on about 0.1uF caps left out by Creative...your the only source I've seen mention this (granted I haven't looked at any technical documents in regard to any workings of the card) so why not propose the mod, reasons for it and add a little tutorial about how and what to change.

(can't even see that you have done this mod yourself let alone mention any noticeable benefit).
Umm,the DAC has its own capacitor that filters out the signal and its compliant with the manufacturers operating conditions.

Or,perhaps the Creative card is that badly designed....and the lack of current reserve is causing bit errors in the digital section of the card as well ( which I highly doubt).
Oh,and bet you told your visitors that you have modded the card.
post #619 of 2194
Quote:
Originally Posted by kirimaru View Post
"cotdt" you should order some samples of ad8599 to hear your self the diference
compared to lm4562,lm4562 sound ok to me,but ad8599 have better soundstage
and there is much more life and involvement with AD8599.
ah.. if only u post this info a few days earlier.. i have both chips and i soldered the lm4562... guess i'll just stick to 4562 as i dunwan to waste another good opamp by cutting the 4562 legs off for ad8599...
post #620 of 2194
Quote:
Originally Posted by kirimaru View Post
"cotdt" you should order some samples of ad8599 to hear your self the diference
compared to lm4562,lm4562 sound ok to me,but ad8599 have better soundstage
and there is much more life and involvement with AD8599.
I hav ad8620 at a moment, but got 2 ad8599 at my posession now. Mayby you have tried 8620 and can compare these two? And also run RMAA with 8599 to check if results are ok.
post #621 of 2194
i have done the RMAA test,please correct me if i am doing somethig wrong.
post #622 of 2194
Quote:
Originally Posted by kirimaru View Post
i have done the RMAA test,please correct me if i am doing somethig wrong.
You are usin digital loopback (analog stage is not tested).
In ur recording control (like volume control) select line in. Right now there should be "wave" or "what u hear" selected.

(one way to get to recording control: open volume control -> options -> properties ->recording)

Line in and front out must me connected via cable.
post #623 of 2194
I've just completed the mod successfully (only the opamp and capacitor part though) and the effect is quite awesome - my x-fi plays music now

Thanks very much cotdt.
post #624 of 2194
Quote:
Originally Posted by qwerty009 View Post
You are usin digital loopback (analog stage is not tested).
In ur recording control (like volume control) select line in. Right now there should be "wave" or "what u hear" selected.

(one way to get to recording control: open volume control -> options -> properties ->recording)

Line in and front out must me connected via cable.
wait i am confused, which source i have select for output and which for input?
post #625 of 2194
Thread Starter 
Quote:
Originally Posted by PPkiller View Post
ah.. if only u post this info a few days earlier.. i have both chips and i soldered the lm4562... guess i'll just stick to 4562 as i dunwan to waste another good opamp by cutting the 4562 legs off for ad8599...
you don't have to cut off the legs, thereby destroying the opamp, you can simply desolder it if you are careful. i just find the cutting technique to be the quick and easy way, but there are better ways if you want to preserve the opamp.
post #626 of 2194
wow!!! the results are worst than the stock xfi,but then why it sound far better than the stock xfi?
post #627 of 2194
urrr... I have no idea what are you talking about there...
post #628 of 2194
Thread Starter 
Quote:
Originally Posted by kirimaru View Post
wow!!! the results are worst than the stock xfi,but then why it sound far better than the stock xfi?
strange, how are you testing it? you have to look at the actual graphs by the way, those summary numbers are not correct. i don't expect much of a difference between stock X-Fi and modded X-Fi. should be about the same. RMAA can't measure the important parameters like transient intermodulation distortion. It only measures useless things, like THD and stereo crosstalk, which has absolutely no effect on the sound below a certain percentage (5% for THD). that's why i didn't publish the RMAA results. they are completely useless. the important parameters require some expensive equipment and a lot of knowledge to measure.
post #629 of 2194
Quote:
Originally Posted by kirimaru View Post
wow!!! the results are worst than the stock xfi,but then why it sound far better than the stock xfi?
try with rmaa 5.5 and see whether the results are the same as verison 6?
post #630 of 2194
Quote:
Originally Posted by cotdt View Post
you don't have to cut off the legs, thereby destroying the opamp, you can simply desolder it if you are careful. i just find the cutting technique to be the quick and easy way, but there are better ways if you want to preserve the opamp.
how i hope i have the experience in desoldering... guess i'll need to borrow hot air gun if i wanna desolder it without damaging the chip..
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