SND HDA and volume adjust

[Sergio Lenzi]

Hello....

I have an acer notebook  ACER 5050 with FreeBSD7.0 and everything 
works.  The only problem is that the sound that goes through HDA
is low...  Using Ekiga,  or when playing a video using totem...  the
volume is too low
on the mic or sound output 
the mixer pcm, volume, are at max... 

The sound plays at a good volume when I uset sox play with volume 4 (4
times).

Question:
is there any tunable sysctl in snd_hda that can increase the volume
between
mixer and the sound chip???

Thanks in advance for any advice,

Sergio