Grace Digital GDI-AQSHR200 Schooner II - Manual (Page 6)

P.5
 Keep a distance of the speaker up to 7 meters apart from
transmitter, and then press “SCAN” auto-tuning button for best
tuning reception.
 Should you experience a “frequency jam”, adjust the channels by switch
from one channel to the other channel on the transmitter, and then press
the
“SCAN” AUTO TUNE button on the speaker again.
NOTE: The signal from the transmitter will decrease in strength over
increased distances and as barriers and interference increase.
5. Adjust the volume to the desired listening level. Volume can be adjusted up by
pressing “+” button or down by pressing the button “-“ to the desired listening
level