I thought anyone with an M90z would want to know this.
A lot of reviews of the M90z criticize the speaker power.
I found a way to increase the sound coming from the speakers. Follow these steps.
> Control Panel
> Lenovo HD Audio Manager
> Sound effects
> Put a checkmark in the box next to Loudness Equalization
> Environment: Living Room. I tried all the settings. This one is the best.
> Equalizer: Vocal. I tried all the settings. This one is the best.
> Karaoke: +0
It makes a signifanct difference. I don't have any problem with hearing sounds from the speakers.