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Community XLT / XLTE Series Owner’s Manual
12 IN CASE OF DIFFICULTY
Should you have a problem with your Community loudspeaker, find the symptom and follow the associated “What
To Do” instructions. Be aware that a particular symptom may have several possible causes. Please refer to
appropriate sections in this manual if you need more detailed information.
SYMPTOMS -
FULL-RANGE LOUDSPEAKERS
PROBABLE CAUSE WHAT TO DO
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. Signal not reaching amplifier. Check that all equipment in the system is turned on and that the audio
signal is going through the equipment.
No sound using Neutrik connector Neutrik connector not seated Make sure Neutrik connector is fully seated by twisting it clockwise
about 1/4 turn after plugging it. Then engage the locking ring.
No sound in PASSIVE mode. Wrong Neutrik pins used. Make sure you are using connector pins #1 + / -
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 volume controls are turned up at least somewhat.
Low volume level. System electronic 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 wiring inside all system connectors is not shorted. Even
one wire strand shorting the +/- signal terminals either before or after
the amplifier can cause this problem.
Lights flash on and off inside the
loudspeaker and/or the PowerSense
LED on the input panel is flashing.
The crossover PowerSense
protection circuits are working.
The lights are part of the PowerSense protection circuitry. Flashing
means there are excessive power peaks. This is a warning to reduce the
power and is a normal action under these conditions.
During high output operation the
volume drops suddenly and then
comes back. (Sound cuts in and out.)
The crossover PowerSense
protection circuits are working.
This usually means that the loudspeaker is being overdriven for a
more extended period. The protection circuit is reducing the signal
level to protect the drivers. It resets itself when the signal level is
reduced. This a normal action under these conditions but must be
corrected. Reduce the volume level to the loudspeaker.
During high output operation the
volume drops suddenly and does not
come back.
The crossover protection
circuits have ‘given up’.
This usually means that the loudspeaker was continually overdriven for
an extended period and the protection circuitry has ‘fused’ in the
protect mode. The crossover must be repaired.
Sound cuts in and out. Bad connection. Check all connections and cabling for shorts or loose connections.
Even one wire strand shorting the +/- signal terminals either before or
after the amplifier can cause this problem.
Distortion, low volume, or no volume
from any or all drivers.
Cold/open solder joint on the
crossover or faulty wiring
connection.
Using an ohmmeter, check the continuity of the crimp connectors, all
solder joints on the crossover and the wiring to the drivers. Also
visually inspect solder joints as cold joints may only malfunction with
higher current than the ohmmeter supplies. Repair as needed.
Distortion from the loudspeaker at
higher volume levels.
Too little amplifier power. If the power rating of the amplifier(s) being used is too low, it will clip
at higher volume levels before the controller limiting is active. Reduce
the volume level or use a more powerful amplifier.
Distortion from the loudspeaker at any
volume level
Driver is malfunctioning. At low, medium, and high levels use a sine wave oscillator to ‘sweep’
the loudspeaker or use wide range program. Listen to each driver to
isolate the problem. Replace as needed.
Noises from the loudspeaker (buzzes
or rattles).
Hardware is loose. Make sure the front grille is securely seated and fastened, that screw-in
mounting hardware is tight, and that any external mounting hardware is
tightened or secured from vibrating.
Noises when playing loudly (buzzes or
rattles).
External objects are vibrating. Things in the room may be vibrating from the loudspeaker energy.
Check carefully to determine if this is the case. Suspended ceilings,
light fixtures, ductwork, conduit, and even wall paneling are all
common architectural sources of this. Loose objects simply lying
around near the loudspeaker can be a source of this also.
Noises from the loudspeaker (buzzes
or rattles).
Driver is malfunctioning. At low, medium, and high levels use a sine wave oscillator to ‘sweep’
the loudspeaker or use wide range program. Listen to each driver to
isolate the problem. Replace as needed.
Low or no volume for the low
frequencies.
Low frequency driver(s) or
crossover is malfunctioning.
Listen at low level to the low frequency driver(s). If some sound is
heard from each and it is not distorted, it is probably a crossover
problem. If distorted or no sound is heard from either or both drivers,
either the drivers or crossover may not be working properly. Replace
as needed.