14
No sound is heard
on all channels.
Audio cable to the source component is
not connected properly or the cable is
bad. Use another cable that you know is
good.
The Input Selection switch is positioned
incorrectly. Refer to installation instructions
for proper settings.
Some or all of the internal fuses are
blown. Return the amplifier to your
SpeakerCraft dealer for servicing.
No sound is heard
on one or some
channels.
Audio cable to the source component is
not connected properly or the cable is
bad. Use another cable that you know is
good.
The Input Selection switch is positioned
incorrectly. Refer to installation instructions
for proper settings.
The Bridging switch is positioned
incorrectly. Refer to installation instructions
for proper settings.
Check the termination points of the
speaker cable at both the amplifier and
speaker.
A speaker is not working. Make sure by
connecting the channel to a speaker that
you know to be working.
4HE0ROBLEM
0OSSIBLE#AUSES!ND3OLUTIONS
No sound is
heard on one or
some channels.
(Continued)
The level adjustment on the channel is
turned all the way down. Turn it clockwise
to raise the volume.
Some or all of the internal fuses are
blown. Return the amplifier to your
SpeakerCraft dealer for servicing.
Hum or buzzing
sound is heard.
The sound may be caused by a ground
loop in the system. Try to eliminate
this by reversing the AC plugs of other
components in the
system.
Other causes include faulty cables.
Amplifier will not
turn on.
The amplifier must be plugged into a live
outlet. The power switch on the front
panel must be on.
The Power Mode switch may be
positioned incorrectly.
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42/5",%3(//4).'
#ONNECTINGTHE,INE,EVEL!UDIO)NPUTS
CAUTION: Only make connections when the amplifier is turned
off.
There are three areas that an input signal can be connected,
BUS, AUX and LINE IN. Refer to the System Design Examples to
determine which is best suited for your application.
!UDIO/UTPUTS
Sources connected to the “BUS” or “AUX” inputs can be
forwarded to other components or amplifiers by connecting
to the corresponding output sections to the right of each
input section. By using standard audio patch cables, you can
connect these outputs to the inputs of another amplifier. Up to
5 SpeakerCraft amplifiers can be daisy-chained together.
!#0OWER
Plug the socket of the AC cord supplied with the amplifier into
the receptacle on the rear of the amplifier. Depending on your
region, plug the AC cord directly into a 120V 60 Hz, 130V
50Hz or 240V 50 Hz wall outlet.
CAUTION: Do not plug the amplifier into the preamplifier or
receivers switched outlet. If you wish to have the amplifier turn
on once the preamplifier or receiver is activated, use one of the
turn on modes, voltage or audio.
3EE$IAGRAM
for the location of the following:
0OWER3WITCH
The switch on the front panel of the amplifier will turn off all
amplifier circuitry no matter which turn on mode is selected.
Refer to the “Power Mode Selection” section for further
information.
0ROTECTION2ED,%$S
When lit the “Protection” LEDs located on the front of the
amplifier indicate that either a fault in the wiring, the speaker,
or the amplifier has caused the channels associated with the
LED to shut down.
,EVEL!DJNOBS
The level adjustment knobs on the back panel of the amplifier
can be used to adjust the level of each channel. There are
many reasons for needing to adjust the level. You many wish
to closely match other levels in the system, or you may wish to
limit the volume level in an area, such as a child’s room.
The Vital amplifier is designed to function trouble-free. Most
problems occur because of operating errors. If you have
a problem please check the troubleshooting list first. If the
problem persists, contact your authorized SpeakerCraft dealer
or SpeakerCraft technical support at (800) 448-0976 or e-mail
us at [email protected].
