Community VERIS Series - Operation and Installation Manual - Page 30
TROUBLESHOOTING GUIDE
Should you have a problem with your VERIS loudspeaker(s), find the symptom and follow the associated
“What To Do” instructions below. Please note that a particular symptom may have several possible causes.
SYMPTOM
PROBABLE CAUSE
WHAT TO DO
High distortion, low
output, or no output
from any or all drivers.
Faulty connection to the
loudspeaker.
Possible solder joint failure
on crossover card.
Using an ohmmeter, check the continuity of the wiring to
the loudspeaker. If the wiring is OK, remove the input
panel and check all solder joints on the crossover and the
wiring to the drivers. Visually inspect solder joints as cold
joints may only malfunction under high current. Repair as
needed.
Distortion from the
loudspeaker at higher
volume levels.
Too little amplifier power. If the power rating of the amplifier is too low, it will clip at
higher volume levels. Reduce the volume level or use a
more powerful amplifier.
Distortion from the
loudspeaker at
moderate to high
volume levels.
Driver is malfunctioning.
Using a sine wave oscillator or wide range program at
moderate levels, listen to each driver to isolate the
problem. Replace as needed.
Low or no output from
the low-frequency
driver.
Low-frequency driver,
crossover, or amplifier is
malfunctioning.
Test and replace as needed.
Low or no output from
the low-frequency
driver.
Mis-wired NL4 -compatible
locking connector.
Check wiring and correct as needed.
Low or no output from
the mid-frequency
driver (applies to three-
way systems only).
Mid-frequency driver,
crossover, or amplifier is
malfunctioning.
Test and replace as needed.
Low or no output from
the high-frequency
driver.
High-frequency driver,
crossover, or amplifier is
malfunctioning.
Test and replace as needed.
Low volume level.
System gain is too low.
Check to make sure that the audio signal to the amplifier
is high enough to drive it properly. Check all volume/level
controls and gain switches in the system including the
amplifier input attenuator.
Low volume level.
Signal or speaker wire
connection is shorted.
Make sure the signal and input wire connections inside all
system connectors are not shorted or open. Even one
small wire strand shorting the +/– signal terminals
together anywhere in the system can cause this problem.
No sound.
Amplifier is not on
or loudspeaker is
disconnected.
Check that amplifier is turned on and that loudspeaker is
properly connected to the amplifier.
No sound or very low
volume.
No audio signal.
Check that all the audio equipment in the signal chain is
powered on and that all gain controls are in the proper
position.
Noises from the
loudspeaker (buzzes or
rattles).
Grille or hardware is loose. Make sure the front grille screws are securely seated and
that any external mounting hardware is tightened or
secured from vibrating.
Noises from the
loudspeaker (buzzes or
rattles).
Driver is malfunctioning.
Using a sine wave oscillator or wide range program at
moderate levels, listen to each driver to isolate the
problem. Replace as needed.
Sound cuts in and out at
high levels.
The crossover protection
circuits have been
activated.
This usually means that the loudspeaker is being
constantly overdriven and the crossover protection circuits
are reducing the power to the loudspeaker as a protective
measure. Reduce the volume level to the loudspeaker.
Sound cuts in and out.
Bad connection.
Check all connections and cabling for shorts or loose
connections. Even one small wire strand shorting the +/–
signal terminals anywhere in the system can cause this
problem.
Sudden 6 dB loss in
sound level.
The crossover protection
circuits have been
activated.
This usually means that the loudspeaker is being
constantly overdriven and the crossover protection circuits
are reducing the power to the loudspeaker as a protective
measure. Reduce the volume level to the loudspeaker, to
restore full dynamic range.