The Behringer LX112 comes from the factory in L1 mode which means the cabinet modeling is on. Since you’re playing through a cabinet you don’t want modeling on. I have no idea why Behringer did this.

Here is how to set the Behringer LX-112 V-ampire amp to L2 mode and adjust the “Live” EQ settings. When you set the amp to L2 mode another set of EQ’s is available independent of the regular EQ.

• Press the two config keys at the same time to enter config mode. It is the “D” and “E” above the tone controls
• Push the up/dpwn buttons until the display says “L2″
• Adjust the tone controls and set the
  bass=2 o’clock mid=10 o’clock and treble=2 o’clock
• press the exit button