How to increase speaker volume of HTC Evo 3D

I have just bought HTC Evo 3D and as much I am inspired by phone, its speaker performance is giving me equivalent dissatisfaction, the speaker sound is very low for ringtone as well as for music playback. Hardly can hear sound if its kept in another room. I have done few workaround example installing volume+ and also downloading loud ringtones. But no difference, is it possible I can increase its speaker sound. Thanks