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Hotrodding the X-Fi: A Layman's Guide (No 56k) - Page 85

post #1261 of 2194
Quote:
Originally Posted by Yukon Trooper View Post
Sorry. Maybe I have a bad habit of pointing out the obvious.

@ germanium - perhaps you could do a blind test with a couple of friends to make LawnGnome a happy camper.
Can't really do that as I don't have a stock card nor the means to conduct such a test. Also soldering & desoldering on these boards is murder on them which is what I would have to de currently to a test & that would not fit into the testing requirements as it would take too long.
post #1262 of 2194
Quote:
Originally Posted by germanium View Post
Here is those tests with those big fat knarly interference grabbers you think I have LawnGnome

http://www.esnips.com/web/Testswith12ufcaps

A whole lot of interference huh!! -135 db at worst. I don't really see a problem there. do you??

Other specs of interest
Noise -116.5
Dynamics 116.4
THD .0007%
IMD .0010%
IMD swept .0008%
Crosstalk at 1KHz -113.7
Single results don't prove anything. You need to posts results before those caps were installed to see a difference.

The results from before the mod would be considered the baseline. You need a baseline for a comparison.
post #1263 of 2194
Quote:
Originally Posted by LawnGnome View Post
Single results don't prove anything. You need to posts results before those caps were installed to see a difference.

The results from before the mod would be considered the baseline. You need a baseline for a comparison.
They have already been posted. I have posted lots of results previously. Check my previous posts. These tests are good enough in & of themselves to show nothings really badly wrong& that is what you seemed to be concerned about anyway wasn't it?
post #1264 of 2194
Quote:
Originally Posted by germanium View Post
They have already been posted. I have posted lots of results previously. Check my previous posts.
Yes, but which results are the ones directly before adding those capacitors?

I tried looking through your esnips, but can't figure out which is which.
post #1265 of 2194
Quote:
Originally Posted by LawnGnome View Post
Yes, but which results are the ones directly before adding those capacitors?

I tried looking through your esnips, but can't figure out which is which.
All the ones before these are before the big caps were added
post #1266 of 2194
Quote:
Originally Posted by germanium View Post
Here is those tests with those big fat knarly interference grabbers you think I have LawnGnome

http://www.esnips.com/web/Testswith12ufcaps

A whole lot of interference huh!! -135 db at worst. I don't really see a problem there. do you??

Other specs of interest
Noise -116.5
Dynamics 116.4
THD .0007%
IMD .0010%
IMD swept .0008%
Crosstalk at 1KHz -113.7
definitely, the RMAA results will beat the analog out of every other cards in the world. Even Lynx 2 do not have such good result. That's all...

If the spikes can be removed by some ways, that will be perfect!!

You're still using ESR papers after the 12uf? What's the signal line for your front-out and line-in loop?
post #1267 of 2194
Quote:
Originally Posted by ter1 View Post
definitely, the RMAA results will beat the analog out of every other cards in the world. Even Lynx 2 do not have such good result. That's all...

If the spikes can be removed by some ways, that will be perfect!!

You're still using ESR papers after the 12uf? What's the signal line for your front-out and line-in loop?
I have never used ESR paper
post #1268 of 2194
Quote:
Originally Posted by ter1 View Post
definitely, the RMAA results will beat the analog out of every other cards in the world. Even Lynx 2 do not have such good result. That's all...

If the spikes can be removed by some ways, that will be perfect!!

You're still using ESR papers after the 12uf? What's the signal line for your front-out and line-in loop?
Will work on that this weekend as far as getting rid of the spikes. They technically really aren't a problem as they are so low in level. The sound is absolutely incredable though as it is. No conjested sounds whatsoever even on songs that had always seemed conjested before on my previous soundcards & CD players. This soundcard has amazing potential.

Still having minor issues with the drivers for Vista. The mixer settings don't always sinc up with what is shown by the operating system & that sometimes makes testing very difficult as the level will show low but the sound is being clipped. I sometime have to fiddle with it for 1/2 hour to get one good reading. When set right it measures very well though as you can see from the tests. This is only an issue on the record side of the mixer, not the playback.

As far as the spikes I believe raising the caps off the board slightly will take care of the spikes. especially the one near the PCI slot.

I'm using a about a 6 inch loopback cable from Radioshack for testing purposes.
post #1269 of 2194
Bypassed the DAC power caps for the DACs analog and digital power section with 6.3v 100uF SMD ceramics, as well as the APU power cap.

The DAC is what is holding us back, and its not performing up to its max.
post #1270 of 2194
Well I installed the AD8066AR, Thank goodness I like this opamp.

Not quite as detailed as the burrbrown opamps. More intense sounding than the OPA2132, but not as much as the other BB opamp I tried.

But the soundstage on this one is much improved.

Good thing, since I think that was the last opamp swap those smd pads can handle.
post #1271 of 2194
Post number 500. Made it to 500 in my first year.


Enjoying the modded X-Fi Elite pro much. Can't stop listening to the music.
post #1272 of 2194
Finally, got some time to do "shorted" Line-Out cap testing.
- includes both power and coupling cap modifications and will post details soon.
- XP SP2
- X-FI Driver: v5.12.6.1187; 08/17/06

SB0460 - LME49860 Installed - Socketed:
- SOIC op amp - LINE-OUT, C23, C50, C76, C77 (shorted, 100ohm SMT)
- LINE-IN, C48, C49 (Panasonic S, 10uf @ 16vdc SMT)
- AUX-IN, C102, C104 (Panasonic S, 10uf @ 16vdc SMT)

Line-Out, with sleeve as ground, no-load, caps shorted: -0.253vdc DC bias. (could cause a problem with direct amps)
With coupling caps installed, +0.029vdc DC bias. Measured with Fluke 97-2.

Small gain loss, about 0.2db, when setting output for RMAA test, compared to cap-coupled.

RMAA v6.0.5 Results, 44/24/48, comparing shorted vs., cap-coupled (33uf):

Frequency response (from 40 Hz to 15 kHz), dB +0.01, -0.08 (+0.01, -0.08)
Noise level, dB (A) -101.7 (-101.8)
Dynamic range, dB (A) 101.7 (101.7)
THD, % 0.0019 (0.0014)
THD + Noise, dB (A) -90.4 (-92.2)
IMD + Noise, % 0.0034 (0.0029)
Stereo crosstalk, dB -99.5 (-98.6)
IMD at 10 kHz, % 0.0068 (0.0062)

Sounds clean, even, high definition, without audible peaking. Very nice and well balanced...

Any cautions with newest Creative beta driver, v20070827?
http://connect.creativelabs.com/beta/default.aspx

Picture:
http://www.esnips.com/doc/beb79ee4-b.../X-FI-MOD-055b

RMAA v6.0.5 TEST Results: (shows 44/16/44 - 44/16/48 - 44/24/48 - 96/24/96)
Summaries: http://www.esnips.com/doc/73d6220a-c.../X-FI-MOD-056b
Details: http://www.esnips.com/doc/dd1f7592-a.../X-FI-MOD-057b
post #1273 of 2194
Quote:
Originally Posted by germanium View Post
Post number 500. Made it to 500 in my first year.


Enjoying the modded X-Fi Elite pro much. Can't stop listening to the music.
Do you suggest using the (modded) x-fi ep with Gigaworks S750?

http://www.guru3d.com/article/sound/194/1/

http://www.xbitlabs.com/articles/mul...orks-s750.html

should be perfect with s750, but hard to mod all the 7.1 channels on x-fi card...
post #1274 of 2194
Quote:
Originally Posted by ter1 View Post
Do you suggest using the (modded) x-fi ep with Gigaworks S750?

http://www.guru3d.com/article/sound/194/1/

http://www.xbitlabs.com/articles/mul...orks-s750.html

should be perfect with s750, but hard to mod all the 7.1 channels on x-fi card...
I honestly have not heard them so I cannot comment on them. I use modified professional biamped nearfield monitors from M-Audio (model BX5 Modifications are made with my own ideas) & Tannoy Ts10subwoofer.
post #1275 of 2194
Quote:
Originally Posted by bichi View Post
Finally, got some time to do "shorted" Line-Out cap testing.
- includes both power and coupling cap modifications and will post details soon.
- XP SP2
- X-FI Driver: v5.12.6.1187; 08/17/06

SB0460 - LME49860 Installed - Socketed:
- SOIC op amp - LINE-OUT, C23, C50, C76, C77 (shorted, 100ohm SMT)
- LINE-IN, C48, C49 (Panasonic S, 10uf @ 16vdc SMT)
- AUX-IN, C102, C104 (Panasonic S, 10uf @ 16vdc SMT)

Line-Out, with sleeve as ground, no-load, caps shorted: -0.253vdc DC bias. (could cause a problem with direct amps)
With coupling caps installed, +0.029vdc DC bias. Measured with Fluke 97-2.

Small gain loss, about 0.2db, when setting output for RMAA test, compared to cap-coupled.

RMAA v6.0.5 Results, 44/24/48, comparing shorted vs., cap-coupled (33uf):

Frequency response (from 40 Hz to 15 kHz), dB +0.01, -0.08 (+0.01, -0.08)
Noise level, dB (A) -101.7 (-101.8)
Dynamic range, dB (A) 101.7 (101.7)
THD, % 0.0019 (0.0014)
THD + Noise, dB (A) -90.4 (-92.2)
IMD + Noise, % 0.0034 (0.0029)
Stereo crosstalk, dB -99.5 (-98.6)
IMD at 10 kHz, % 0.0068 (0.0062)

Sounds clean, even, high definition, without audible peaking. Very nice and well balanced...

Any cautions with newest Creative beta driver, v20070827?
http://connect.creativelabs.com/beta/default.aspx

Picture:
http://www.esnips.com/doc/beb79ee4-b.../X-FI-MOD-055b

RMAA v6.0.5 TEST Results: (shows 44/16/44 - 44/16/48 - 44/24/48 - 96/24/96)
Summaries: http://www.esnips.com/doc/73d6220a-c.../X-FI-MOD-056b
Details: http://www.esnips.com/doc/dd1f7592-a.../X-FI-MOD-057b
Only signicant harmonic that increased was the second harmonic as expected, All other are either the same or lower.

IMD swept did seem to increase across the board. It seems related to the increased second harmonic distortion however when you look at the IMD spectrum analysis. You will notice that the IMD & IMD swept increased by approximately the same amount as the THD & the THD increase was 100% second harmonic only increase. While I wasn't quite expecting an increase in IMD I was expecting the THD increase & the fact that it was solely second harmonic increase &that the IMD in fact mirrored that increase.

frequency response slightly improved with D.C. coupling.

Crosstalk definately improved toward higher frequencies especially.

Difference in dynamic range though visable is too hard to tell which is better by the graph.

Overall even though there is a slight increase in distortion there is an overall more optimal distortion characteristic than the cap coupled cousin.

Lastly you D.C. offset seems higher than usual at least compared to what I've seen with the stock opamp
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