Douk Audio Q1 Benutzerhandbuch Seite 6

FREQUENTLY QUESTIONS
Q: All cables are connected, but no sound output?
A: 1. Check if the indicator is on, and turn on the power button or knob if it is not on.
If the indicator is still not on after turn on the power, you can find a laptop power
and connect to test whether it is the machine fault or a power failure.
2. If the indicator 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 there is the sound distortion?
A: When the output power exceeds the normal power of amplifier, there will be a large
distortion. you can turn down the preamp volume or the power amplifier volume.
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 supply in the market have large interference
coefficient, which will cause a lot of current sound.
Q: Why after connecting signal line, there is interferential sound even not
play music?
A: If you use unshielded signal lines, there will be interference signals entering the
power amplifier. If you hate the noise, please 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 will work again.
A: The amplifier may be overheat protected in this case, and the output power may
have exceeded the rated power, so you can turn down the volume 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: 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: Speakers and amplifiers are very sensitive equipment, they also need a process to
know and match each other, after working together for 8 hours the sound will be
good,new power amplifier and new speaker needs more than ten hours.