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Jamo J 12 SUB Manual

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LINE IN
R
L/LFE
LR
LINE IN
R
L/LFE
LINE IN
R
L/LFE
LR
LINE IN
R
L/LFE
Processor/Pre-Amp/Receiver Processor/Pre-Amp/Receiver
PRE • OUT
LFE OUTPUT
OR
CONNECTIONS AND CONTROLS
CAUTION: Ensure that the subwoofer is unplugged from the AC wall outlet before making
any connections.
“LINE IN” Connection - Most of today’s surround receivers (and pre-ampliers) have a line
level subwoofer output labeled Subwoofer Pre Out, Sub Out, SW Out, etc. If you have this
output, connect one end of a subwoofer cable to it and connect the other end of the cable
into the subwoofer line input labeled LEFT/LFE. This connection allows the subwoofer to
operate with both music and surround sound movies (refer to your receiver manual). In
absence of a subwoofer output on your receiver, as an alternative hookup, you can connect
Left and Right channel Pre-Amp Outputs from your receiver (if provided) to the Left/LFE
and Right input on the subwoofer.
Level
- If your subwoofer is connected to a Subwoofer Output of a surround receiver, rst
set the subwoofer volume level control in the receiver to the “half way” or “0 dB” position.
Then increase the volume (or gain) of the subwoofer up until the subwoofer’s volume level
matches the output of your main speakers. After this setup is completed, the volume control
on your system’s main amplier or pre-amplier will be the volume control for both your
subwoofer and speakers together. If your subwoofer is connected to the L/R Pre-Amp Outputs
of a receiver there will be no subwoofer volume in that receiver to set before setting the
subwoofer’s gain control.
“LOWPASS” Control - The crossover point chosen determines where low bass frequencies
are “handed o” from the speakers to the subwoofer. If setting the crossover point in the
receiver, turn the Lowpass Filter knob on the subwoofer to the farthest point right (160Hz).
Set the crossover point based on the size of the main left/right speakers you are using in
the system. As a general rule, for larger, oorstanding speakers, set the crossover point
between 50Hz-90Hz. If using small bookshelf or “satellite” speakers for the mains, set the
crossover point between 90Hz-150Hz. The smaller the speaker, the higher the setting
until the bass frequencies blend well between the speakers and your subwoofer once your
system is completely hooked up. If your receiver does not have a crossover point setting, set
the Lowpass Filter on the subwoofer instead within the same recommended settings (see
receiver manual for additional speaker setup info).
“PHASE” 0/180 - This control is used to acoustically match the subwoofer’s output to your
main speakers. Select the position, either 0° or 180°, in which your subwoofer has more
output at the listening position.
“POWER” AUTO/ON/OFF - When this switch is in the “ON/AUTO” position, the subwoofer will
automatically turn “on” when it senses a signal. It will automatically go into “standby mode”
after 15-20 minutes with no signal. When this switch is in the “OFF” position, the subwoofer
will remain “o” until the switch is manually turned back to the “ON/AUTO” position.
Power LED indicator - Located on the front bae, this LED indicates the operating status
of the built-in amplier. The LED will light green when the amplier is on and receiving
a signal. If the LED is dark and not lit, the amplier is o. For more information on the
controls mentioned in this manual and on bass management, see your dealer or visit
www.jamo.com
Left and Right pre-outs on Processor/Pre-Amp/Receiver connected to Left
and Right line inputs on subwoofer amplier
LFE Output on Processor/Pre-Amp/Receiver connected to LFE input on
subwoofer amplier
Figure 2
Line Level Connections
3 …


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