Chapter 7 Switch Operations - JBL Project Everest DD66000 User Manual

Project Everest DD66000
CHAPTER 7
Project Everest DD66000 Switch Operations
The DD66000 has two control panels under the
cover at the center bottom of the front baffle.
Shorting bars or switches inside the control panel
allow you to switch orientation of the system, engage
bi-amplification if desired and adjust woofer and
high-frequency levels. They also provide access to
the 9-volt batteries used for capacitor bias. Remove
the control panel cover, referring to the illustrations
on the right, and make necessary adjustments.
To change setups using shorting bars, use the supplied hexagonal driver to
remove the screws securing the bar. Move the bar according to the setup you
prefer and then put the screws back.
Attention: As loose mounting screws on the terminals could cause bad contact,
make sure that they are firmly attached. However, if you overtighten, there is a
risk of damaging the terminals themselves. Please use the supplied hexagonal
driver and tighten screws with reasonable torque, by hand only. Do not use
powered screwdrivers of any type.
The following adjustments are made by using the above procedure.
System Orientation
The two low-frequency drivers operate over different ranges, as described
earlier. For proper imaging, it is necessary that the midrange woofer (LF2) be
in the inboard position for the pair of systems. The proper setting of the system
orientation jumper bars can configure a single DD66000 system as either a "left" or
"right" system. It is necessary that both bars be moved together. Improper
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