Installation manual

Community S-Series - Operation and Installation Manual - Page 56
SYMPTOM PROBABLE CAUSE WHAT TO DO
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.
Sound when
BI-AMPLIFIED is
“muffled”.
PASSIVE / BI-AMP
switch is in the wrong
position.
Switch on the input panel should be in the BI-AMP
MODE (RIGHT) position.
Mid and high
frequencies "muffled"
or missing in PASSIVE
mode.
PASSIVE / BI-AMP
switch is in the wrong
position.
Switch on the input panel should be in the PASSIVE
mode (LEFT) position.
No low frequencies in
PASSIVE mode.
PASSIVE / BI-AMP
switch is in the wrong
position or the wrong
connector pins are
being used.
Check that the switch is in the PASSIVE (LEFT)
position and that you are using connector pins #1
+/–.
No mid or high
frequencies in BI-
AMPLIFIED mode.
HF amplifier is not
functioning or
loudspeaker is
disconnected.
Check that the HF amplifier is turned on and that the
loudspeaker is properly connected to the amplifier.
No mid or high
frequencies in BI-
AMPLIFIED mode.
HF section of electronic
crossover is not
functioning or is
disconnected.
Check that any external electronic crossover has HF
output and that it is properly connected to the
amplifier.
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 in PASSIVE
mode.
Wrong pins are wired
on the speaker
connector.
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 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.
Poor sound quality in
BI-AMPLIFIED MODE.
Incorrect connections /
reversed polarity.
Check the connections to the LF and HF sections.
Verify that polarity is correct (+ and – amplifier
outputs go to + and – on all connectors and on the
loudspeaker).
Sound cuts in and
out.
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 3 dB loss in
sound.
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.