Nolan NSRXRM3C2HRS User Manual page 17

Balance for L/R audio channel:
Balance between the left and right ear to compen-
sate for a more volume in one ear
Short press L>:

Left channel enhance
for 1 step, total 5 steps,
user will hear a tone
when reach max.
Short press <R:

Right channel enhance
for 1 step, total 5 steps,
user will hear a tone
when reach max.
Short press "II":

Restore left and right
channel
equal balance.
to default
R L
R L
R L