Fosi Audio BT30D PRO, Руководство пользователя, Страница: 5 / 12

Try to use other Bluetooth devices. Weak or unstable Blue-
tooth signal will cause this problem, try to close your device
to the BT30D PRO.
Please check the indicator light on the front panel of the
amplifier and the power supply are on.
If the indicator light is on, please check if the volume knob is
at the minimum state, if it is, please turn up the volume.
Make sure that BT30D PRO is in the play mode you want.
Try another RCA cable and make sure the audio cable is
connected correctly.
Please unplug the RCA cable from the amplifier, and then
turn it on to have a try.
Please change the audio cable and audio source to
have a try.
Did you set the "treble" volume to the top? Please volume
down the "Treble" volume.
The gain of BT30D PRO is larger than other model, you can
volume down the "Treble" sound. Some speakers are very
sensitive so that the white noise will be obvious, it’s normal
that BT30D PRO has some noise when you turn up the
“Treble” volume.
Make sure that all the cables are completely pushed into the
device, incompletely connection will cause this issue.
Please keep this device away from other electronic devices.