Alesis Fusion 6 HD Service Manual page 201

12) Connect the signal source to both channel 1 and 2 of the Multitrack Audio Inputs and verify
that the signal source is heard from both the left and right side of the headphones.
13) Turn the encoder one click clockwise. The Left and Right Input should read as shown
below:
14) Verify that the signal source heard from the headphones is now louder.
15) Turn the encoder one click clockwise and note the Left and Right Input will read as follows:
16) Verify that the signal source heard from the left side of the headphones has become
quieter (it should be approximately the same level as in step 11), and the level from the right
side has not changed.
17) Turn the encoder one click clockwise and note the Left and Right Input will read as follows:
Verify that no tone is coming from either side of the headphones.
18) Repeat steps 12 through 17 for the Multitrack input pairs 3/4, 5/6, and 7/8.
19) Turn the encoder one click clockwise. The Left and Right Input will now be Ext Left and Ext
Right, respectively:
20) Connect the signal source once more into the LEFT/MONO input and verify that the signal
source is heard on both the left and right side of the headphones.
21) Press "PREV" once. The text "Streaming Engine" should now be highlighted. Turn the
encoder two clicks counterclockwise to select "Voice Engine."