SSP 2015
page 6
NO SOUND
If there appears to be no power:
• Check that either the stereo or mono LED on the front panel
of the equalizer is lit
• Check that the power cord is seated properly in the back
panel of the crossover and that it is plugged into an active
AC power source
IF THERE APPEARS TO BE
POWER, BUT NO AUDIBLE
SIGNAL
• Confirm that active audio lines are connected to the
equalizer’s inputs and outputs
• Check that both the input and output gain controls are
advanced sufficiently
• Check to make sure that you have turned up the amplifiers’
outputs
HUM AND/OR BUZZ
If you suspect that the hum is caused by a ground loop:
• Systematically remove and/or connect the audio grounds of
the devices in the signal path
• Remember, for safety you must maintain connection to
chassis ground. Never lift a safety ground
IF YOU SUSPECT THE HUM IS
NOT CAUSED BY A GROUND
LOOP
• Check the audio at an earlier stage in the audio chain
• Low level equipment should be mounted away from power
amplifiers to avoid induction of this type of hum
• Be certain that all audio wiring except for loudspeaker lines
is well shielded, and that low level wiring is not run parallel
to and/or in close proximity to AC power wiring
INTERMITTENT AUDIO
• Check the other equipment and the wiring to make certain
that the signal is not Intermittent earlier in the chain
• Check the integrity of all cables using a cable tester
TROUBLESHOOTING
