JBL Project Everest DD65000 Product Commentaries And User Manual page 18

The following adjustments are made using the above procedure:
sysTem orienTATion
As described earlier, the loudspeaker's two low-frequency drivers
operate over different frequency ranges. For proper stereo
imaging, it is necessary that the midrange woofer (LF2) be in the
inboard position (closer to the other speaker). The proper setting of
the system orientation jumper bars can configure a single Project
Everest system as either a "left" or "right" system. It is necessary
that both bars be set in the same position. Improper sound will
result from staggering the bars. The bars select which woofer
receives the low-frequency signals and which woofer receives
the midrange signals. One system should be set to "left" and
positioned as the left speaker. The other system should be set to
"right" and positioned as the right speaker.
system orientation:
Left speaker
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system orientation:
right speaker
hF drive/LF drive
These jumper bars allow you to set the loudspeakers for normal
operation (using a single stereo amplifier or pair of mono amplifiers)
and bi-amp operation (using two sets of stereo amplifiers and an
external dividing network). The shorting bars are set at the factory
for Normal (single-amplifier) operation, so move the shorting bars
only if you are bi-amping the loudspeakers.
normal operation
Bi-amp operation
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