Hi!
The Asus Rog G752 is the worst laptop I had for the powerful and especially sonor quality speakers. Having had about 8 asus laptop and previous work we have HP and Dell business .. it really is the worst ...
In addition I have a vibration under the trackpad
Having switched from N56VZ asus with an external subwoofer for a asus G752, I had a drop in power and quality of over 400%.
I tried the solutions mentioned further on the forums and use other paid software for adjustment but personally ... it does not correct the problem.
The only solution I found to get more power is to configure the sound to a 5.1 without subwoofer in the windows configuration.
In this way, the subwoofer is to play all the frequencies therefore more power in general for music etc.