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Operating Manual - GQX 3102, GQX 3101, and GQX 1502 Graphic Equalizer
8. TROUBLESHOOTING TIPS
8.1 No Audio Output
Check AC power - is the pilot light on?
Check in/out connections - are they reversed?
Are you sure you have an input signal?
8.2 EQ Controls Do Nothing
Is the master EQ switch in?
The lowest and highest frequency sliders may be
beyond the range of the program material or
speakers and may produce little or no audible ef-
fect.
8.3 Peak Light Flashes or Stays On All the Time
If the peak light flashes, the signal level to the
equalizer is too high. Turn down the gain. If it is
on all the time, disconnect the input and output
cables. If it is still on, the unit must be returned
for service.
8.4 Distorted Sound
This will only be caused by too much signal
which will show on the Clip LED. If the LED is
not flashing, there is an overload somewhere else
in the signal path. Adjust the relative gain of
each component in your chain to keep everything
at a comfortable level.
8.5 Excessive Hum or Noise
Hum will usually be caused by a ground loop be-
tween components. Try using the suggested bal-
anced input and output hook-ups if the other
pieces of equipment used in conjunction with your
equalizer have balanced inputs and outputs.
Noise (excessive hiss) can be caused by insuffi-
cient drive signal. Make sure you are sending a
nominal 0 dBu line level signal to the equalizer.
Most noise problems occur because gain is ap-
plied to audio signals too late in the chain. For
best performance, apply gain to individual source
signals as early as possible, like at the mixer in-
put section. As gain increases, it also boosts the
noise content of that signal. Any cumulative noise
built up in a mixed signal will only be increased
by using an equalizer as a gain device, so make
every attempt to operate the equalizer with as little
gain as possible.
Note: Unshielded cables, improperly wired con-
nections, and cable with broken strands (shorts,
etc.) are the most common problems. Make sure
you use good quality cable with connectors sol-
dered firmly on the correct pin. When in doubt,
get in touch with your Ashly dealer, or call the
Ashly service department at 800-828-6308.
3.00
3.50
2.25
5.25
18.375
19.00
6.70
7.60
9. DIMENSIONS