Fosi Audio BL20C, Руководство пользователя, Страница: 8 / 12

2: Can I connect a turntable to BL20C amp, why is the
volume is extremely Low?
• As for the turntables do not have a built-in preamp, if not connect
to a phono preamp first, the volume would be low.
• As for the turntables which have a built-in preamp, you can
connect directly to the BL20C with the turntable.
3: Why does the sound is cracking or make a lot of
electric noise?
• Please make sure all the cables completely pushed into the
devices, incompletely connection will cause this cracking.
• Please remove all the inputs then check whether cracking noise
disappear or not, the cracking maybe from the audio source or
input cables.
• If you are not using the original factory standard power supply,
please replace the power supply before testing. Many power
supply in the market have large interference coefficient, which
will cause a lot of current sound.
4: My Bluetooth device cannot pair with BL20C?
• Make sure that you have selected the input channel to “BT/USB”
on the front panel of the BL20C, and the "BT/USB" indicator
shows blue light.
• Make sure there is no U-disk on your device because U-disk
takes priority over Bluetooth.
• Make sure that BL20C is powered on.
• Make sure that BL20C is not paired with other devices.
• Make sure that the distance between your device and BL20C is
not too long.
• Make sure there are no barriers between your device and BL20C,
barriers will affect the Bluetooth operation distance.
• Please reconnect the power supply to the BL20C, and move the
BL20C to another room to have a try.
Step 4: Open the audio application, play and enjoy!
AUX Input
Prepare: audio source (take a TV as an example), a RCA cable.
Step 1: Switch the input mode to the "AUX" position, the power
indicator shows red light;
Step 2: Connect your TV to “Audio Input” via a RCA cable;
Step 3: Open your TV, play and enjoy!
U-disk Input
Prepare: a U-disk
Step 1: Switch the input channel to the "BT/USB" position, the
"BT/USB" indicator shows blue light.
Step 2: Insert the U-disk into the "USB" port on the front panel,
and BL20C will automatically recognize the music format
in the U-disk.
Step 3: Short press the “PREV”, “NEXT” or “P/M” buttons on the
front panel of BL20C to select or pause your songs.
Note: The capacity of U-disk for BL20C should be under 32GB, and
no more than 100MB per file.
Note: Make sure there is no Bluetooth connection, if there is,
please press and hold the "P/M" button to switch to USB
mode.
Troubleshooting/QA
1: What type of speakers work best with BL20C Amplifier?
• Fosi Audio BL20C amplifier work great with any 4-8 ohm passive
speakers. But please be attention that the amplifier is for passive
speakers and a active subwoofer, not for active speakers.