Eurocom M3 - Manual (Page 171)

Modules
Sound Blaster Cinema EQ 7 - 35
7
Sound Blaster Cinema Settings
Sound Blaster Cinema selects the
built-in speakers by default and this setting may
cause some sound quality issues when using headphones. To
adjust the settings for
headphones do the following:
1. Run the Sound Blaster Cinema application.
2. Select Settings from the menu.
3. Select Headphones from the drop-down menu (you can adjust the slider for
crossover frequency).
4. Click OK and close the application.
Figure 7 - 26
Sound Blaster Cinema
Select Headphones
Settings