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G751 Imbalanced Sound Problem OFFICIAL SUPPORT THREAD (thread closed)

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:!

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.


  • 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!!
633 REPLIES 633

Level 7
Any news ? or new driver released ?

Level 7
Seriously, no sense of urgency? Over 34,000 views, issue reported way over a month ago on this thread and no formal response from the manufacturer? This is my 1st Asus Gaming Laptop and I am not impressed for what I am reading on this magnificent forum.

Do I care about a laptop sound performance? Not really, however, my kid sits next to me sometimes with her $200 Chrome book, and let me tell ya, when she asks me: Daddy, why does your $2500 Laptop sound like crap compared to mine? it bugs the sh*t out of me.

Please, ASUS; FIX IT!!!


Level 7
Asus please , when is the fix. please prioritize this...

Level 9
You know things are bad when the speakers on my ASUS Transformer Flip LP300 are better than what I had on the G751. (A $599 2-in-1 13.3" Laptop beats a $1499 17" gaming powerhouse.)

Level 7
This is absurdity. Always when I want buy laptop - I always advise ASUS . I bought a few Asus laptop but G series(flagship) has still problem with audio. Asus G75 has/had problem with audio / G750 has/had problems with audio /G751 has problems with audio. WTF? My opinion on the asus is really really bad. I don't want back my Asus - but I don't see other way.

Level 7
I have returned mine a long time ago. Very, very disappointed by this entire ordeal and lack of action.

Level 7
finally I have bought it
sound is greater than expected, but with loud sounds >> I notice sounds like vibrations from the subwoofer
I used subwoofer disabling tool, but this prevents the vibrations but makes sound less loud >> is that normal?
I have read at the start of this thread "Fix Being Worked On! (New Driver + UI)" >> which dirver you mean? the subwoofer disabling tool? or you got a new driver that fix the problem

Level 7
There's the possibility that it's a hardware problem and will never be fixed. (no, the G750 didn't have that kind of sound troubles : at most, there was a tiny bug in the Realtek drivers installer that disabled MaxxAudio, for some models in some countries : mine - French model - was OK from the beginning)
I really can't understand why the G751 could be SO different from the G750, for example.

on a desktop, when you buy a 2.1 sound system, it's just "stereo" for Windows. you plug the cable in the "stereo" output of the motherboard or sound card (like a Creative Labs Sound Blaster) it's the hardware that redirects low frequencies to the "boomer" (or "subwoofer" ); the driver does nothing.

remember, many people returned their G750 because of screen problems (vertical lines in grey shades).... this was never fixed. (only "tweaked" by newer drivers)
and then the G751 came out.

Level 7
BRS. you did everything you could with this forum and I did everything i could with the corporate office. I chatted no less than 30 times. Made over a dozen calls. Filed 12 escalation. Contacted the BBB twice. And send no less than 40 emails. Although i admit I wanted to push asus the hardest and try to get all of us to sue or make a statement I always hoped the end result would be it would just work.

Tragic that asus cared so little in the end.

Level 7
im sooo afraid if its hardware problem. what should i gonna do if it is?
i couldn't send back im staying in malaysia! and i use it for work! X_X