Community R6-51 and R6-BASSHORN Installation / Operation Manual — Page 22
SYMPTOM
PROBABLE CAUSE
WHAT TO DO
No Sound.
Equipment is turned off.
Check and make sure that all equipment in the audio signal path is
turned on. Amplifiers should not be turned on until all equipment
before it is turned on.
No Sound.
Bad or open connection.
Make sure the signal and input wire connections for all connectors
in the system and all terminal screws are properly connected or
soldered. Make sure all wire and cables are intact and not severed
or damaged.
No Sound.
Crossover or all the drivers have
completely failed.
This would be an unusual cause but could occur with severe abuse
or an adverse amplifier failure. All other possibilities should be ex-
plored before assuming this is the cause. If it is, replace or repair
the failed components.
No sound or very low
volume.
System control is turned down.
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.
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 signal and input wire connections in all system con-
nectors are not shorted. Even one small wire strand shorting the
+/- terminals can cause this problem.
Sound cuts in and out. Bad connection.
Check all connections and cabling for shorts or loose connections.
Distortion, low volume,
or no volume from any
or all drivers.
Cold/open solder joint on the
crossover or faulty wiring connec-
tion.
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 an ohmmeter supplies. Repair as needed.
Distortion from the
loudspeaker at higher
volume levels.
Too little amplifier power.
If the power rating of the amplifier being used is too low, it will clip
at higher volume levels. Reduce the volume level or use a more
powerful amplifier equal to the loudspeaker’s “Program” power
rating.
Distortion from the
loudspeaker at higher
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. Repair or re-
place as needed.
Low volume for the
bass frequencies.
Low frequency driver or crossover
is malfunctioning.
Using an ohmmeter, measure the resistance of the input cable
(with the amplifier disconnected). If the meter reads 4–7 ohms,
one driver may not be working. Replace as needed.
Low or no volume for
the high frequencies.
High frequency driver or crossover
is malfunctioning.
While right in front of the loudspeaker, listen at low level to the high
frequency driver located near the top of the horn mouth. If some
sound is heard and it is not distorted, it is probably a crossover
problem. If distorted or no sound is heard, the driver may not be
working properly. Repair or replace as needed.
Noises from the loud-
speaker (buzzes or
rattles).
Grille or hardware is loose.
Make sure the front grille screws are firmly tightened; that any ex-
ternal mounting hardware is tightened or secured from vibrating
(especially if chains or wires are used in the mounting).
Noises from the loud-
speaker (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. Repair or
replace as needed.
IN CASE OF DIFFICULTY
