User's Manual

- 20 -
Trouble Shooting
If none of these advices solves the problem, the speaker might be faulty. If you need
further assistance, please contact us directly: info@hedd.audio
Problem Solution
Green Power-LED is “on” but there
is no audio output
1. Check the wiring and make sure that all cables are
connected correctly.
2. Check if you have selected the correct input via the
ANALOG/AES switch on the back panel of the speaker.
3. Check the signal path. Swap the cables of both loud-
speakers. You might have one defective signal cable.
4. Connect an audio source directly to the speaker (pay
attention to the volume!). If you now have audio output, the
malfunction is in your signal path.
5. If the back panel of the speaker is very hot, it may be that
the internal thermal protection of the ampliers has shut down
the audio output to prevent electrical damage. Turn the unit
o, let it cool down and repower.
There is a hum or buzz noise in the
output
1. Disconnect all signal cables. If the noise is gone, check your
audio cables and the equipment of your signal path. If you are
using the balanced XLR input, try to activate Ground Lift on
your signal source.
2. If there is still noise, check if you have any other electrical
devices that potentially produce high amounts of RFI
(cellphones, switching power supplies, radio equipment) next to
your speakers. If so, move them further away.
Red Overload-LED lights up
constantly
Reduce the input audio level either on the source or with the
GAIN control on the back panel of the speaker
Speakers vary in output volume Use the GAIN control to compensate for any level dierences