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Incredible X-Fi mod *WILL VOID YOUR WARRANTY*, 56K WARNING - Page 3

post #21 of 978
A VERY steady hand is needed to solder Surface Mount Devices!

This is an EXCELLENT Idea,
I have been reading about upgrading the capacitors in my NAIM AUDIO Preamp
Ive also still got to build my Active Crossovers(they have 8pin DIL opamps)

Would shielding the whole card make any benefits? (Not that I have one!)

presumably improvements could be made to any half decent sound card with crappy opamps

REP+ tho matey!
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post #22 of 978
Quote:
Originally Posted by TheLegend View Post
How much ching does this project require?

If I don't have much experience with soldering, should I even consider trying this?
well figure:

$6 plus shipping for op-amp (each) digikey (24 for surround sound)
$10 plus shipping for blackgate
$4 plus shipping for nichicons (16 for surround sound)
$20 plus shipping for ERS paper


so you're looking at under $50, so overall not bad (but for stereo mods)

but should you try it no... the op amp is SMD you shouldn't even try this if you don't have a lot of experience. Plus even the caps are a PITA bc the card acts like a heatsink. the decoupling caps aren't too bad, but the power cap will cause grief. the op-amp is smaller then the finger nail on your little finger and has 8 pins that need to be soldered to the board. Not a beginners task.
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post #23 of 978
Quote:
Originally Posted by soloz2 View Post
but should you try it no... the op amp is SMD you shouldn't even try this if you don't have a lot of experience. Plus even the caps are a PITA bc the card acts like a heatsink. the decoupling caps aren't too bad, but the power cap will cause grief. the op-amp is smaller then the finger nail on your little finger and has 8 pins that need to be soldered to the board. Not a beginners task.
Since you are doing these mods for guys at Head-Fi, how much are you charging to do a 5.1 setup including parts and are you willing to give your fellow OC.net member a little discount?
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post #24 of 978
I just order the LM4562 SOIC from the web site. 3 samples all you have to do is pay for shipping it cost like $10. I'll have it put on buy this guy at work. I'll start with this and work my way up
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post #25 of 978
bookmarking and question time.

I don't recall off hand but do they offer something that will allow plug and play of surface mount components? I don't mind soldering that much but haven't done much surface mount stuff but rather larger stuff like. so if I could get something that would allow me to just swap I would be happy.

what problems would a larger power cap cause? never worried about it before but then again I'm no engineer just learning with audio.
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post #26 of 978
you could theoretically use something like this with a socket soldered to it and then you could roll DIP op-amps

http://cimarrontechnology.com/index....PROD&ProdID=20

But you'd have to make sure the op-amps are compatible (not just the pin config)

there is moer of a problem with the specs of the cap then the size... but too much of an increase isn't necessarily good when the circuit wasn't designed for that much reserve.
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post #27 of 978
I acn understand in other places more can cause problems just harder for me to see it on the ac filtering part. but either way I can take it conservative. would be easier on the wallet anyway :-)


are there any sockets though that can work will allow you to plug in surface style chips though? or would one have to bend pins? and are the pins the same spacing? as I said haven't done much with this stuff yet. mostly analog discrete components and even then I'm not the greatest
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post #28 of 978
soloz2 do I really have to short out the decoupling caps when replacing the op-amps. and shoud I replace the surround ones too. would it make a difference.
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post #29 of 978
Quote:
Originally Posted by rx7speed View Post
I acn understand in other places more can cause problems just harder for me to see it on the ac filtering part. but either way I can take it conservative. would be easier on the wallet anyway :-)


are there any sockets though that can work will allow you to plug in surface style chips though? or would one have to bend pins? and are the pins the same spacing? as I said haven't done much with this stuff yet. mostly analog discrete components and even then I'm not the greatest
well for starters the power cap on the x-fi is not an AC filtering cap... the sound card gets its power from the mobo, which in turn gets its power from the psu... it's all DC. and shouldn't be more then 12v at all!

no, you can't socket surface mount parts... only through hole
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post #30 of 978
Quote:
Originally Posted by Danbeme32 View Post
soloz2 do I really have to short out the decoupling caps when replacing the op-amps. and shoud I replace the surround ones too. would it make a difference.
no you don't have to short them. Like I suggested it would be safer to replace them with higher quality caps. But shorting will give the best SQ. You can leave them be if you don't want to mess with them.

you should replace the surround sound op-amps and caps if you use the surround sound features of your x-fi. if you only use stereo then only upgrade the stereo output
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