Owner`s manual

PAGE 45 Community Solutions™ Owner’s Manual
17 IN CASE OF DIFFICULTY
Should you have a problem with your Community Solutions 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.
SYMPTOM – SLS
LOUDSPEAKERS
PROBABLE CAUSE WHAT TO DO
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 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.
Replace as needed.
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 relays
have “fused” in their protect mode. The crossover must be
repaired.
Full-range sound in BIAMPLIFIED
mode but bass is weak and highs
sound "muffled".
Wiring for LF and HF sections
is reversed from electronic
crossover or amplifier.
Check wiring from crossover to amplifier and amplifier to
loudspeaker and make sure the HF is going to the HF and the
LF to the LF loudspeakers sections.
Lights flash on and off inside the
loudspeaker.
The crossover PowerSense
protection circuits have been
activated.
The lights are part of the crossover protection circuitry.
Flashing means that there are excessive power peaks to the
loudspeaker and is also a warning to reduce the power.
Low or no volume for the low
frequencies. (Note: on the SLS918
there is only one low frequency
driver located in the bottom of
the enclosure.)
Low frequency driver or
crossover is malfunctioning.
While right in front of the loudspeaker, listen at low levels, to
the each low frequency driver. One is located at the bottom
and one in the middle of the enclosure. 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, the driver may not be working
properly. Replace as needed.
Low or no volume for the mid-
frequencies. (Note: on the
SLS918 there are two mid-
frequency drivers located in the
upper left of the enclosure.)
Mid frequency driver or
crossover is malfunctioning.
While right in front of the loudspeaker, listen at low level to
the mid-range driver located at the top of the enclosure. If
some sound is heard from this area and it is not distorted, it
is probably a crossover problem. If distorted sound or no
sound is heard, the driver may not be working properly.
Replace as needed.
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 inside all
system connectors are not shorted. Even one small wire
strand shorting the +/– signal terminals either before or
after the amplifier can cause this problem.
Mid and high frequencies in
BIAMPLIFIED mode sound
“muffled”.
PASSIVE / BIAMPLIFIED switch
in the wrong position.
Switch on the input panel should be in the BIAMP MODE (up)
position.
Mid and high frequencies sound
"muffled" in PASSIVE mode.
PASSIVE / BIAMPLIFIED switch
in the wrong position.
Switch on the input panel should be in the PASSIVE mode
(down) position.
No high frequencies. (Note: on
the SLS918 the high frequency
driver is located at the upper right
of the enclosure.)
High frequency driver or
crossover is malfunctioning.
While right in front of the loudspeaker, listen at low levels, to
the high frequency driver located in the middle of the
cabinet. If some sound is heard from this area and it is not
distorted, it is probably a crossover problem. If distorted
sound or no sound is heard, the driver may not be working
properly. Replace as needed.
No low frequencies in BIAMPLIFIED
mode – SLS918.
LF driver is not functioning. Disconnect the amplifier and, using an ohmmeter, measure
the resistance at the dual banana LF input jack. If it reads
“open”, the LF driver may not be working. Replace as needed.
No low frequencies in Biamplified LF driver is not functioning. Disconnect the amplifier and, using an ohmmeter, measure