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G751 Imbalanced Sound Problem OFFICIAL SUPPORT THREAD (thread closed)

BRSxIgnition
Level 9
I've created this thread to condense the information we've gathered on this issue over the course of the old thread, which can be found here.

Current Fix Status:
Fix Here: https://rog.asus.com/forum/showthread.php?57462-G751-Imbalanced-Sound-Problem-FIX-IS-OUT!

Current Probable Issue Diagnosis:
Regular Signal instead of LFE (Low Frequency Effects) Signal to Subwoofer

Description (In different states):
Installed Drivers (Main Issue):

All speakers "working", but WITH massive imbalance issue.Sub greatly overshadows L/R Speakers & also distorts at volumes above 35%. Can hear sound very faintly coming from L/R speakers with ear pressed up against them.

Uninstalled Drivers (Temporary Fix):

Subwoofer (Only) is default playback device, with L/R Speakers being listed as a separate playback device. Left and Right Speakers working at full volume when selected as default playback device, with no sound
coming from subwoofer. Subwoofer can play audio when selected as default device, but distorts at volume levels above 35%, and does not work in conjunction with rear speakers in this configuration. (Either/Or Situation)

Reinstalled Drivers (Main Issue, Again):

Same effect as "Installed Drivers" every time. (All speakers "working", but WITH the imbalance issue. Sub greatly outpowers L/R Speakers & also distorts at volumes above 35%. Can hear sound very faintly coming from L/R speakers with ear pressed up against them.)

**NEW** Subwoofer Disabled (New Finding/Confirmation):

L/R Speakers can be heard perfectly fine when Subwoofer is disabled using the "Vbcmd_mute_int_woofer" Mute.exe file provided by MarshallR@ASUS on the ROG Forums. Cannot comment on volume level, but volume seems to scale fine without the subwoofer to overshadow it. This confirms the situation is a software issue, and all speakers are physically fine.


This issue is known to arise both brand new "out of box" units as well as on units where the OS has been cloned or reinstalled on a new drive and the ASUS Support Site drivers have been used. All G751 Models can have this issue.

Temporary Fixes:
As mentioned in the description, the speakers still work fine, proving that the issue is Software, not Hardware-related.

To get your Left & Right back speakers working correctly, follow the temporary fix guides below.

**NEW** TEMPORARY FIX - DISABLE SUBWOOFER:

  • Download and extract this RAR file.
  • Make sure you have the ASUS G751 Realtek Drivers installed. You can find them here.
  • Unzip Vbcmd_mute_int_woofer tool, and run Mute.exe.
  • If it returns a "Success!" message, your subwoofer should now be disabled.
  • If you ever need to enable your subwoofer again (when a fix is issued), simply unzip Vbcmd_unmute_int_woofer and run Unmute.exe.
  • Viola.


Enjoy your tinny-back speakers with no sub until we get a fix from ASUS. Until then, keep checking in here for updates, and let us know if you find anything!

Edit by cl-Albert 2/5/15: Very late thanks for looking into this and apologies for the delay, BRSxIgnition.
The new *.7432 G751 audio driver has finally been released, so this thread has been closed (to avoid 2 competing threads) and a new thread started.
If anybody is interested, please post your testing results or comments about this new audio driver at the post below. Thanks!

G751 Imbalanced Sound Problem FIX IS OUT!

https://rog.asus.com/forum/showthread.php?57462-G751-Imbalanced-Sound-Problem-FIX-IS-OUT!
264 Views
633 REPLIES 633

X-ROG
Level 15
Just FYI - this is the proposed UI addition from our RD. Seems it's what you need. 😉
45406

MarshallR@ASUS wrote:
Just FYI - this is the proposed UI addition from our RD. Seems it's what you need. 😉
45406


As long as it works and doesn't control all speakers (like "Front" does currently, from the same window) we'll be happy with that - it will let us manually balance the subwoofer with the back speakers.

Will it auto scale to the volume level? 25% Speaker Volume = 10% Subwoofer Volume -> 50% Speaker = 20% Subwoofer -> 100% Speaker = 40% Subwoofer?

If at all possible, we'd also really like to see the following changes implemented on the driver end of things:

  • Left & Right Speaker should receive all high and midrange frequencies they can handle. (Seems fine right now)
  • Subwoofer should receive only an LFE Signal. (Meaning just Bass and the lower midrange frequencies)
  • Overall Subwoofer volume should be 25% lower than L/R Speaker Level at Minimum.
  • Slight Increase to Overall Volume. (*If Possible)


Thanks again Marshall! I'm sure I speak for allof us when I say that seeing this support is a game changer. If you need any feedback for anything, or any help at all from any of us, feel free to let us know. (Updates are welcome too!)

Can I take all these updates and news that you're working towards a fix as a promise that there will be one? :rolleyes:

Edweird
Level 10
Comprende...but I would think it's better to let them figure out specific values - we're not exactly sound engineers, or at least I am not. But we're getting somewhere now and I like being part of solutions.

We're only making suggestions based on our collective average results so the engineers can get a large enough sample size to know what to work towards. BRS's messages simply condense the information to make the process easier.

But that doesn't really matter so much when there is now at least some back and forth like we're seeing now with MarshallR's posts. Though I don't really like people asking in multiple threads when the new model will come out. It gives the impression that the current model needs replacing and it most definitely does not - it's an excellent piece of hardware with a few gimmicks - and it also pushes ASUS somewhat to offer less support for the model and push on with development of new products. Either way, it looks like the G751 will stick around until 2016 - whixh means it's ASUS' vested interest tp keep it well supported and working - which usually means software updates like this one that make things work lol. As is usual for most things, we just need some patience.

KoolASUS
Level 7
Well, if it can help (since you used my previous screenshots), here is my G750JH Sound Panel and Speakers Panel/Tabs :

45412

45414

45413

45415

45416

crudetrader
Level 7
Comprende...but I would think it's better to let them figure out specific values - we're not exactly sound engineers, or at least I am not. But we're getting somewhere now and I like being part of solutions....

thats correct, neither am i but the people who performed that review i referenced are , hence the specific number, the volume output on youre unit is quite a bit higher than mine and likely others

rmuniak
Level 7
Exactly - we want device to work as intended. Apparently current driver is completely for different device - you can see that 750H driver has only front and subwoofer sliders - this is driver that was really created for specific device. Ours is just some general crap, which is not working - thus sending high frequencies to subwoofer, while it shouldn't and with crappy configuration sliders that doesn't behave as they should.

rmuniak wrote:
Exactly - we want device to work as intended. Apparently current driver is completely for different device - you can see that 750H driver has only front and subwoofer sliders - this is driver that was really created for specific device. Ours is just some general crap.


Exactly.

The UI update needs to look like this. (Nothing but Subwoofer and front speakers)

45420

Once we can take manual control of the subwoofer and reduce its volume, our sound issues should be all but gone.

All we'd need at that point is for the subwoofer to receive a proper LFE signal.

BRSxIgnition wrote:

45420


I have asked for this control on G751 specifically. Will update when I get more info to share.

Seems beta driver is an unsuitable solution so we will not be sending it out anymore. Thank you to everyone who gave feedback.

Aglauros
Level 7
Hello i bought Asus G751JY with 16GB and I saw i have 2 others memory ram, Samsung and Kingston (Samsung have worse timing) it's normal with this model?

viper3000
Level 7
Hy MarshallR your updated driver is not good. Subwoofer is still louder than back speakers.