PC Audio Creative X-Fi club!, X-Fi owners and fanclub!
PC Audio Creative X-Fi club!, X-Fi owners and fanclub!
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May 28 2008, 12:32 AM
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#61
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5,211 posts Joined: Feb 2005 From: Konohana |
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May 28 2008, 12:40 AM
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#62
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5,211 posts Joined: Feb 2005 From: Konohana |
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May 28 2008, 12:57 AM
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#63
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5,211 posts Joined: Feb 2005 From: Konohana |
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May 28 2008, 01:07 AM
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#64
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5,211 posts Joined: Feb 2005 From: Konohana |
How can you choose Line-In when you mute it? Mine doesn't register anything to be recorded, the level is -70dB no matter how hight I put the volume graph is
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May 28 2008, 01:15 AM
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#65
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5,211 posts Joined: Feb 2005 From: Konohana |
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May 28 2008, 07:55 AM
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#66
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5,211 posts Joined: Feb 2005 From: Konohana |
I done some modding, changed the DSP caps with 1000uF 16V Sanyo WG caps. Weirdly my soldering iron is not hot enough to melt the solder on negative point of the caps, resulting I put the caps on the back side of the card (I noticed this problem even on Live! cards)
It working great, I was worried that it might not work because firstly since I use a lot of heat to remove the bugger caps and secondly I use low ESR caps that it shuts down the regulator, but thankfully its not Next might be to remove the stupid decoupling caps, but I afraid that the problem with negative point again. Maybe a wire behind the caps to short them works just as fine as removing them....? EDIT: My mod is almost done, I removed the decoupling, short them, along with additional trodas mod on the card plus I don't use any opamp. It sounds great, but because there is construction work in front of my house, I can't really test the card fully But I will against not using an opamp, when I change the volume it will pop and shut down my amplifier. So don't do it even though it sounds better. I plan to use LME49720 because I have no other choice This post has been edited by Najmods: May 28 2008, 10:04 AM |
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May 28 2008, 12:18 PM
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#67
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5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 11:33 AM) Hehe, you're right. I'm crazy enough to do so Well, finally my mod is done! Complete with LME49720 and a little more capacitor changes. The improvement is EDIT: Some picture for poisoning This post has been edited by Najmods: May 28 2008, 01:21 PM |
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May 28 2008, 06:15 PM
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#68
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5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 05:57 PM) @Najmods How much of what? The capacitance value or the price? RMAA is impossible, since I removed some of the caps on the line-in that is why I can't test the card for RMAA anymore Bro, how much of the solid cap? Can you test the opamp output to see how much the DC voltage offset since you bypass the decoupling cap? If can post your RMAA test as well... If you really want it, I can resolder back the capacitor This post has been edited by Najmods: May 28 2008, 06:15 PM |
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May 28 2008, 06:51 PM
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#69
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5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 06:42 PM) I ask for price...and how much for LME49720? Can you test the opamp output DC offset using digital multimeter? because i read from head-fi who shorted the decoupling cap detected some DC offset from opamp output terminal.... I've told you before, I take all those caps from dead soundcard or motherboard, I don't buy it. How to measure DC offset?why you removed it? you are not to use line-In anymore? I'm not bothered with RMAA result anymore. that is why I don't solder them Edit: I resolder them back just to test RMAA, here's the result This post has been edited by Najmods: May 28 2008, 06:58 PM |
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May 28 2008, 07:45 PM
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#70
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5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 07:25 PM) just test the left and right channel refer to ground without music playback...with coupling cap, the value should be very near to 0V.... I got negative values, -0.17V to be exact. I don't know what that means though Anyone here knows what is the pinout for 3.5mm female gold jack on this X-Fi? I want to use RCA jack as primary out |
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May 28 2008, 08:01 PM
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#71
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5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 07:49 PM) Absolute zero, no reading at all (maybe because I disable rear channel I think), why do you ask?EDIT: I checked it again with 5.1 enabled, it registered 0.002V This post has been edited by Najmods: May 28 2008, 08:05 PM |
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May 28 2008, 09:00 PM
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#72
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 08:34 PM) you are now facing a dangerous to overheat your amplifier... its minus 170mV, not +170 mVThe modder who using LM4562 and shorted cap only register 10-30mV, but you get almost 170mV, too high, maybe you put back the shorted cap and measure again if you wish... Furthermore I'm sure my Technics amplifier have DC offset protection This post has been edited by Najmods: May 28 2008, 09:15 PM |
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May 28 2008, 09:18 PM
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#73
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
QUOTE(coolkwc @ May 28 2008, 09:15 PM) Actually the same...if you direct connecting your headphone/earphone onto it, your headphone/earphone diaphragm will displace from it original position depends on negative or positive DC offset... I've edit my previous post. My Technics amp have DC offset protection, hehehe |
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May 29 2008, 12:24 AM
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#74
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5,211 posts Joined: Feb 2005 From: Konohana |
I use 33uF tantalum caps on the 4 decoupling caps and measure the DC offset, its exactly 0.030V. Sound quality wise there is slight difference, no caps sound a bit better
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May 29 2008, 12:43 AM
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#75
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
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May 29 2008, 10:05 AM
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#76
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
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Jun 2 2008, 07:26 PM
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#77
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
Just got back from short vacation
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Jun 2 2008, 10:07 PM
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#78
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
They are crap too, well, my card is made in Malaysia, which is weird. The soldering job on this card is the worse thing I see from a sound card, the caps are not perfectly perpendicular to the card, even the leg is sticking out and not perfectly flat on the card
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Jun 3 2008, 08:47 PM
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#79
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana |
I don't dare to mod other cards sorry, but if you need any info I can give it to you
I change some more capacitor, no tantalum now |
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Jun 3 2008, 09:22 PM
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#80
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5,211 posts Joined: Feb 2005 From: Konohana |
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