so i just bought a brand new out of the box Alesis Multimix 8 usb power mixer and some brand new sure sm57 and 52beta mics (for recording drums). all in all i spent close to $900 on brand new equipment and when I plug in the 4 mics to the 4 mixer mic preamps and power it up and even switch on the phantom power, i get no responce or pickup indicators on the mixer. the led lights dont show any levels when i turn gain or volumes up at all. i have tried messing arround with all the settings but i cant get any sign that the mixer is picking up the mics input at all. Im kind of new to recording setup, but it seems to be a pretty basic rig. AM i doing something wrong?