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dLiGHT
04-20-2014, 05:47 PM
Hey ROG!

I just received a g750jm and I am loving it! The only issue is that the hiss/white noise is killing it for me.

I have searched the forums and saw that it is due to low impedance, yet I have Sennsheiser HD555 which have 120 Ohm limit. Is there any way to reduce the hiss thru the maxxaudio settings?


Thanks!

hmscott
04-20-2014, 09:34 PM
dLIGHT, it also might be the Realtek driver settings for power saving. I thought that was fixed in the latest version - it sets the power saving OFF for AC power and leaves it on for Battery power. Are you hearing the hiss on AC or battery, or both?

Here is a link that lists the Registry entries affecting the power saving settings:
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/587521-fix-realtek-sound-popping-high-pitched-tone-squeal.html

If you still have hiss, might I suggest moving to a USB amp, or USB DAC/Amp:

http://lifehacker.com/5903575/unleash-your-headphones-full-potential-with-a-usb-dac-and-amplifier

Also, try other headphones to see if that gets rid of the hiss. I have had past experience trying to fix the wrong end of the problem, and if I had just tried other elements I would have avoided a lot of wasted time - there was nothing wrong with the new part, it was the part I thought was good :)

I have had no hiss with Sony MDR-XB500 on the JW/JX/JH, and they are only 40 ohm.

I was considering a USB DAC/amp, and went with the Sennheiser RS-220 connected to the G750 with the TOSLINK optical built into the headphone jack - no hiss and awesome sound. If you like your headphones, then the USB DAC/amp would be a good way to go.

Let us know how it goes dLIGHT :)

dLiGHT
04-21-2014, 04:47 AM
dLIGHT, it also might be the Realtek driver settings for power saving. I thought that was fixed in the latest version - it sets the power saving OFF for AC power and leaves it on for Battery power. Are you hearing the hiss on AC or battery, or both?

Here is a link that lists the Registry entries affecting the power saving settings:
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/587521-fix-realtek-sound-popping-high-pitched-tone-squeal.html

If you still have hiss, might I suggest moving to a USB amp, or USB DAC/Amp:

http://lifehacker.com/5903575/unleash-your-headphones-full-potential-with-a-usb-dac-and-amplifier

Also, try other headphones to see if that gets rid of the hiss. I have had past experience trying to fix the wrong end of the problem, and if I had just tried other elements I would have avoided a lot of wasted time - there was nothing wrong with the new part, it was the part I thought was good :)

I have had no hiss with Sony MDR-XB500 on the JW/JX/JH, and they are only 40 ohm.

I was considering a USB DAC/amp, and went with the Sennheiser RS-220 connected to the G750 with the TOSLINK optical built into the headphone jack - no hiss and awesome sound. If you like your headphones, then the USB DAC/amp would be a good way to go.

Let us know how it goes dLIGHT :)

Sadly those reg files are no longer available. Do you know where I could them somewhere else? Thanks for the help!

pokerface
04-21-2014, 05:55 AM
just launch regedit

then navigate to:

HKEY_CURRENT_USER\Software\Realtek\RAVCpl64\PowerM gnt

now double click on ENABLED from the right pane and change the value from 1 to 0

then reboot and enjoy

ASUS drivers suck

how is the average joe supposed to know all this crap!

jetrian
06-14-2014, 11:50 AM
pokerface, I have the same issue but did not solve it..

hmscott
06-14-2014, 10:26 PM
pokerface, I have the same issue but did not solve it..

G750JS - buzz in headphones - jetrian, your thread :)
http://rog.asus.com/forum/showthread.php?48329-G750JS-buzz-in-headphones&p=409902&viewfull=1#post409902

Tindrael
06-15-2014, 09:18 AM
I've tried editing the registry but it did not fix the issue.

hmscott
06-15-2014, 09:34 AM
I've tried editing the registry but it did not fix the issue.

Tindrael, which issue, you haven't posted in this thread before... crackling or white noise, or?

Did you reboot after making the registry change?

Filo1
06-15-2014, 09:08 PM
G750JX same problem
when headphones pluged i can hear not so loud noise

hmscott
06-15-2014, 11:48 PM
If it is background hiss during silent passages, and not crackling, it is caused by using low impedance headphones with the G750 headphone amp.

There are numerous threads discussing this, search the forum for headphone impedance

What headphones do you use with your g750?
http://rog.asus.com/forum/showthread.php?35545-What-headphones-do-you-use-with-your-g750&p=291697&viewfull=1#post291697

My 40 ohm headphones have no hiss, others have found headphones in the 250 ohm range sound best to them. Low impedance earbuds are the worst at 16-23ohm's.

Best idea is to take the G750 headphone shopping with you, and try them out till you find a pair you like that doesn't have bothersome hiss.

Or, move to Bluetooth headphones, or usb dongle based wireless headphones, or usb dongle plug in headphones. But, be careful Windows 8.1 has introduced incompatibilities with some usb headphones, double check to make sure the ones you are interested in work on Windows 8.1

I use the headphone jack Toslink optical output at home to drive Sennheiser RS-220's that have a Toslink optical input, but you could also connect the G750 Toslink ouput to your Receiver, and drive your headphones with your Receiver / headphone amp :)

jetrian
06-17-2014, 04:43 PM
Guys, for you all, this is only a workaround. But works like a CHARM.

I just bought USB sound card Creative Blaster Play!...
And all the hiss is gone. Like tears in the rain. Plus the quality of the Creative brand..
Costs here in Czech Republic around 18 Euro.. no reason not to take it.
I am so happy about it and wanted to share with you all ROGgers :)

PhoenixR
06-18-2014, 05:37 PM
The problem comes from the headphone amp, it has too high gain and with headphones that have low impedance, you will have a very high noise level. I have a 16 Ohm Creative Aurvana Live! and this problem really drove me crazy.

The solution I've found somewhere is to add impedance to your headphone. You might be able to find some cables/adapters with added impedance, but I made my own. It just needs a pair of 50-10ohm resistor in series for each channel and then the hiss is gone.

Jabbapop
08-10-2014, 12:48 AM
just a checkin: I just received my G750 in the mail yesterday and this has been the biggest issue for me. (so far: previously owned a g73jh and i've learned that though the quality of these asus gaming laptops is pretty great, there are always tiny quirks to sort out.) Currently, there's no known resolution, short of getting different headphones or USB sound system? I've improvised by using a zoom4hn to serve as a usb sound system, essentially, and have my low impedance klipsch s4 headfones plugged into em. It's kind of a pain to have to configure each time i boot the computer, but is the most economical at the moment. I haven't been able to find any high impedance headphones of comparable quality to these klipsch earbuds for less than a hundred dollars.

Edit: Now I'm starting to get crackling, both when audio is sent through the h4n and when it's playing through the realtek.

Edit 2: The crackling seems to be a gradual thing. Doesn't happen immediately on boot but as system use wears on starts to occur. As it happens with both seperate audio systems, I began to think it might be something else interfering. Did you know NVIDIA has a virtual audio device installed? I disabled the asus GPU tweak and the crackling ceased immediately. (Overclocking has never been a safe thing :-X) I'm gonna keep running and seeing if it's died down: if so, that might be a solution :-X