Owner`s manual

PAGE 46 Community Solutions™ Owner’s Manual
mode – SLS915/920/960/980.
(Note: LF drivers are wired in
series.)
the resistance at the dual banana LF input jack. If the meter
reads “open”, one or both LF drivers may not be working.
Replace as needed.
No low frequencies in Biamplified
mode.
LF amplifier is not on or
loudspeaker disconnected.
Check that the LF amplifier is turned on and that
loudspeaker is properly connected to the amplifier.
No low frequencies in BIAMPLIFIED
mode.
LF section of electronic
crossover is not functioning
or is disconnected.
Check that electronic crossover has LF output and that it is
properly connected to the amplifier.
No low frequencies in Passive
mode.
(Note: SLS915/920/960/980 LF
drivers are wired in series.)
LF driver is not functioning. Disconnect the amplifier, switch the loudspeaker to
BIAMPLIFIED mode and, using an ohmmeter, measure the
resistance at the dual banana LF input jack. If the meter
reads an “open”, one or both LF drivers may not be working.
Replace as needed.
No low frequencies in PASSIVE
mode.
PASSIVE / BIAMP switch is in
the wrong position or the
wrong connector pins are
used.
Check that the switch is in the PASSIVE (down) position and
that you are using connector pins #1 +/–.
No mid or high frequencies in
Biamplified mode.
HF amplifier is not on or
loudspeaker disconnected.
Check that the HF amplifier is turned on and that
loudspeaker is properly connected to the amplifier.
No mid or high frequencies in
Biamplified mode.
HF section of electronic
crossover is not functioning
or is disconnected.
Check that electronic crossover has HF output and that it is
properly connected to the amplifier.
No sound. Amplifier is not on or
loudspeaker disconnected.
Check that amplifier is turned on and that loudspeaker is
properly connected to the amplifier.
No sound in Passive mode. Either wrong Neutrik pins or
wrong banana jack is being
used.
Make sure you are using connector pins #1 + / – or the right
banana jack (as seen from the rear of the enclosure).
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.
Noises from the loudspeaker
(buzzes or rattles).
Grille or Hardware is loose. Make sure the front grille screws and quick-lock pads are
securely seated; that any external mounting hardware is
tightened or secured from vibrating (esp. if chains are used
for suspension).
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 Biamp
Mode.
Incorrect polarity
connections.
Check the connections to the LF and HF sections. Verify the
polarity is correct (+ and – amplifier outputs go to + and – on
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 either before or after the amplifier can cause
this problem.
SYMPTOM – SBS
LOUDSPEAKERS
PROBABLE CAUSE WHAT TO DO
Distortion, low volume, or no
volume from any or all drivers.
Cold/open solder joint on the
input panel or faulty wiring
connection.
Using an ohmmeter, check the continuity of the crimp
connectors, all solder joints on the input panel 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.
No bass or bass is weak. No signal to the subwoofer. Check that electronic crossover has subwoofer output, that
it is properly connected to the amplifier, that amplifier is
properly connected to the subwoofer and that there is
sufficient gain to drive the subwoofer in relation to the full-
range loudspeakers.
Bass is weak. Incorrect subwoofer polarity. Verify polarity is wired as shown in the section for the
connecting the loudspeakers. Note that in some cases, due
to physical loudspeaker placement, a reversed polarity
connection will provide better coupling to the full-range
loudspeaker.
Bass is weak. Poor physical placement. Note that in some cases, the physical placement a
subwoofer can have a significant effect on the bass energy