Metric Halo ULN-R User Manual
Page 4

7) Connect the phantom power cable between connector J5 on the DB25 connector board to connector
J5 on the power supply board at the front of the LIO:
8) Install the mic pre board, making sure that the pins on the bottom of the board line up with the
sockets highlighted in the picture above. You must install the channel 1-4 board in this position. Use
two Phillips head screws to secure the mic pre board and dab them with caulk. Fit the ribbon cable
jumper between the mic pre and DB25 connector board, making sure that the pins are lined up.