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The Xonar Essence STX Q/A, tweaking, impressions thread - Page 254

post #3796 of 4874
Quote:
Originally Posted by juanej View Post

So I got my asus xonar essence and I've been using it with my ath-m50, is it normal I have to crank the volume bar above 3/4 and sometimes all the way up so I can listen music at a good (drunk good if you know what I mean) level?

 

I'm using normal gain, and unified xonar drivers btw, the m50s have 38ohms of impedance

Follow instructions here: wiki and set to low gain for those headphones, but I suspect the bass will atleast be a little out of sorts - most probably not Denon level.

post #3797 of 4874
Quote:
Originally Posted by WiR3D View Post

Follow instructions here: wiki and set to low gain for those headphones, but I suspect the bass will atleast be a little out of sorts - most probably not Denon level.

thank you very much, it sounds a lot louder now but isn't resampling 44.1khz to 48khz bad?

 

And I'm getting the sound output interrupted when any other sound tries to play on windows (like facebook notification sound) using wasapi on musicbee (If I use ASIO it plays really fast or really slow so ASIO is not an option for me)


Edited by juanej - 10/17/12 at 12:50pm
post #3798 of 4874

hey guys i followed the guide and am using foobar with 48/24 settings.  i was wondering when i resample to 48000 if i should check ultra mode or not and also under output should i select wasapi(event) or wasapi(push) with my xonar card?  oh and im currently using wasapi was wondering if i should keep wasapi or use asio?  between foobar and musicbee is one better than the other for audio quality or they about the same?  Thanks!


Edited by brdnhigh - 10/17/12 at 2:18pm
post #3799 of 4874
Quote:
Originally Posted by brdnhigh View Post

hey guys i followed the guide and am using foobar with 48/24 settings.  i was wondering when i resample to 48000 if i should check ultra mode or not and also under output should i select wasapi(event) or wasapi(push) with my xonar card?  oh and im currently using wasapi was wondering if i should keep wasapi or use asio?  between foobar and musicbee is one better than the other for audio quality or they about the same?  Thanks!

 

ASIO and WASAPI should be identical if implemented correctly. 

post #3800 of 4874
Quote:
Originally Posted by brdnhigh View Post

hey guys i followed the guide and am using foobar with 48/24 settings.  i was wondering when i resample to 48000 if i should check ultra mode or not and also under output should i select wasapi(event) or wasapi(push) with my xonar card?  oh and im currently using wasapi was wondering if i should keep wasapi or use asio?  between foobar and musicbee is one better than the other for audio quality or they about the same?  Thanks!

yeah use ultra

i use asio 1.0 since it doesnt mute other programs, and since i dont have an amp to use asio 2.0

 

use whichever player you prefer.  there shouldnt be any sq difference, unless a player is using some kind of hidden dsp effect

differences are mostly playlist management and vst/plugin support

post #3801 of 4874

When trying LT1364 as I/V stage I got oschillation opamps got "hot as hell"...

Any one else experiencensed this?
 

post #3802 of 4874

Hello all,

 

I am having fun with the STX and VLC combo for music playback.  I enjoy using Xonar Audio Center to mess with effects and select from Dolby Headphone or HF mode, etc.

 

I just installed Foobar to give it a shot and the first thing I realized is that it seems to bypass all control of the Xonar Audio Center, thus preventing me from being able to choose between HF, Gaming, Music, Movie, Dolby Headphone, etc.  Does anyone know why this is or how I can get all audio playback controlled through the Xonar Audio Center?

 

Cheers

post #3803 of 4874
Quote:
Originally Posted by KonaBear View Post

I am having fun with the STX and VLC combo for music playback.  I enjoy using Xonar Audio Center to mess with effects and select from Dolby Headphone or HF mode, etc.

I just installed Foobar to give it a shot and the first thing I realized is that it seems to bypass all control of the Xonar Audio Center, thus preventing me from being able to choose between HF, Gaming, Music, Movie, Dolby Headphone, etc.  Does anyone know why this is or how I can get all audio playback controlled through the Xonar Audio Center?

I'm guessing bypassing the controls keeps the audio signal cleaner.

post #3804 of 4874

If I use high gain with my low impedance Sennheiser HD598s, how badly will the sound quality be affected? Should I just stick with the recommended normal gain for low impedance headphones?

post #3805 of 4874
Quote:
Originally Posted by suica View Post

If I use high gain with my low impedance Sennheiser HD598s, how badly will the sound quality be affected?

 

The "gain" control is digital, and does not affect the quality, it just makes the sound louder (the analog parts of the card actually always work as if you set the maximum gain and volume).

 

One thing that does have an effect on the sound quality is if you set the "left" and "right" controls higher than the default of 76; these can boost the level in software by up to 12 dB, but dynamic compression will be used to prevent clipping. The dynamic compression may also be triggered when using the EQ. If the compression can only be avoided by increasing the gain and decreasing the volume, then higher gain might indeed improve sound quality.


Edited by stv014 - 10/19/12 at 9:41am
post #3806 of 4874
Quote:
Originally Posted by stv014 View Post

 

The "gain" control is digital, and does not affect the quality, it just makes the sound louder (the analog parts of the card actually always work as if you set the maximum gain and volume).

 

One thing that does have an effect on the sound quality is if you set the "left" and "right" controls higher than the default of 76; these can boost the level in software by up to 12 dB, but dynamic compression will be used to prevent clipping.

 

I thought that the different levels of gain had different voltages(extra high gain being at 7Vrms)? Or is voltage driven by volume, meaning that it's only delivering 7Vrms when at maximum volume?

post #3807 of 4874
Quote:
Originally Posted by chewy4 View Post

I thought that the different levels of gain had different voltages(extra high gain being at 7Vrms)? Or is voltage driven by volume, meaning that it's only delivering 7Vrms when at maximum volume?

 

Increasing the output voltage makes the sound louder, that is the purpose of a volume control, which basically implements a variable overall gain. In the case of the Xonar STX, a full scale analog output from the PCM1792 DAC always results in a 20 Vp-p output on the headphone jack (if it is enabled), but the digital signal that is converted by the DAC is attenuated by the gain and volume controls. Here is how it is implemented in the open source ALSA driver:

 

static void update_pcm1796_volume(struct oxygen *chip)
{
        struct xonar_pcm179x *data = chip->model_data;
        unsigned int i;
        s8 gain_offset;

        gain_offset = data->hp_active ? data->hp_gain_offset : 0;
        for (i = 0; i < data->dacs; ++i) {
                pcm1796_write_cached(chip, i, 16, chip->dac_volume[i * 2]
                                     + gain_offset);
                pcm1796_write_cached(chip, i, 17, chip->dac_volume[i * 2 + 1]
                                     + gain_offset);
        }
}

 

As it can be seen in the datasheet, registers 16 and 17 are the digital attenuation control that allows for 0 to 120 dB attenuation in 0.5 dB steps. "hp_gain_offset" is 0 dB in the 600 Ω mode, -6 dB in the 300 Ω mode, and -18 dB in the 64 Ω mode.


Edited by stv014 - 10/19/12 at 3:23am
post #3808 of 4874
Quote:
Originally Posted by stv014 View Post

 

Increasing the output voltage makes the sound louder, that is the purpose of a volume control, which basically implements a variable overall gain. In the case of the Xonar STX, a full scale analog output from the PCM1792 DAC always results in a 20 Vp-p output on the headphone jack (if it is enabled), but the digital signal that is converted by the DAC is attenuated by the gain and volume controls. Here is how it is implemented in the open source ALSA driver:

 

static void update_pcm1796_volume(struct oxygen *chip){        struct xonar_pcm179x *data = chip->model_data;        unsigned int i;        s8 gain_offset;        gain_offset = data->hp_active ? data->hp_gain_offset : 0;        for (i = 0; i < data->dacs; ++i) {                pcm1796_write_cached(chip, i, 16, chip->dac_volume[i * 2]                                     + gain_offset);                pcm1796_write_cached(chip, i, 17, chip->dac_volume[i * 2 + 1]                                     + gain_offset);        }}

 

As it can be seen in the datasheet, registers 16 and 17 are the digital attenuation control that allows for 0 to 120 dB attenuation in 0.5 dB steps. "hp_gain_offset" is 0 dB in the 600 Ω mode, -6 dB in the 300 Ω mode, and -18 dB in the 64 Ω mode.

Makes sense, thanks.

post #3809 of 4874

Hi guys,

 

I recently finished my audiophile/gaming pc build:

 

So far everything is working wonderfully, and I am loving the sound combo of the K701 and STX together.  The only problem I have encountered is what appears to be random microstuttering of the audio, especially when I listen to music...occasionally when playing games.  For a new build, it is disappointing that I would be having such a problem; however, I am left without a clue of what the cause/solution may be.  Sometimes, I notice the microstuttering occur when using other programs, surfing the web, anything that takes the system out of "idle" (idle + foobar running the music).  Of course, sometimes I can go a good length of time using the computer normally without any stutters in the audio in both idle mode and in usage mode...so for the most part, it appears completely random and unpredictable.  

 

My guesses so far as to the problem:

  • Not enough power from the power supply unit? Or I just have crappy/sketchy one in general?
  • Malfunction with my RAM (even though my system recognizes all 16GB that I installed)?
  • sound card driver? (I have reinstalled the latest driver multiple times)
  • sound card itself is defective (hard to believe seeing as how everything works, save for the random microstuttering)

At this point I am pretty stuck, but have a feeling you guys may have a better clue than me, any help or feedback would be greatly appreciated!

 

Cheers

post #3810 of 4874

I had the same issue for the longest time. Check out this:

 

http://www.thesycon.de/deu/latency_check.shtml

 

Download it and see if the cutouts occur with a spike in your latency. 

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