A:
If you use unshielded signal lines, there will be interference
signals entering the power amplifier. If you hate the sound, you
are advised to use the shielded signal lines or unplug the signal
lines.
Q: Why does the amplifier stop working after a period of
time? After a period of time off, it was working again
A:
Usually in this case, the amplifier is overheating protection, and
the output power may have exceeded the designed power, so
you can lower the volume a little and try again.
Q: why does the volume of the machine stay the same,
while the sound of different audio sources (such as CDS
and mobile phones) is different?
A:
The output range of different types of audio source devices is
different, the mobile phone is usually 0.35mV, and the CD is 1V.
The signal output amplitude of the sound source will directly
influence the volume.
Q: Can this amp be left on all the time?
A:
It can be connected all the time and it is safe without power
consumption.
Q: Why the sound of the power amplifier is not very good
at the beginning, the high frequency is not clear, but after
working for 8 hours the sound is normal?
A:
Speaker and amplifier is a very sensitive equipment, also need
to know each other, and the matching process, usually the
sound will be good after the new power amplifier and the
speaker work more than ten hours.
Any problems please leave a message to the customer
support email address:
Troubleshooting/QA
Q: All cables are connected, but no sound output?
A: 1.
Check if the POWER indicator is on, and turn the VOL knob
clockwise to turn on the POWER if it is not. When the
indicator light is still not on, you can find a laptop power and
connect to test whether it is the machine fault or a power
failure;
2.
If the indicator light is on, check whether the VOL knob is in
the minimum position. If so, turn clockwise to normal Volume;
3.
If both of the above are normal, check the input device if it is
paused, mute, or the volume is minimized.
Q: Why do loudspeakers make a lot of electric noise?
A:
If you are not using the original factory standard power supply,
please replace the power supply before testing. Many power
supplies in the market have large interference coefficient, which
will cause a lot of current sound.
Q: Why doesn’t the SUB FREQ knob control the sound?
A:
The SUB FREQ knob is to adjust the frequency output of
subwoofer, please make sure the SUB/PBTL switch on the front
panel is selected to SUB.
Q: Why does the sound break?
A:
when the output power exceeds the normal power of amplifier,
there will be a large distortion. you can turn down the front
volume or the power amplifier volume, then it is ok.
Q: When connecting RCA line input but not playing music,
why it has interferential sound?