JBL Project EVEREST DD66000 User Manual page 24

Battery Installation
The network of this system utilizes the proprietary JBL "charge-couple
method" to activate capacitors by applying DC bias using battery and this
eliminates unwanted distortions. Please refer to procedures below and install
the supplied batteries on the battery holders.
Battery Installation Procedures:
1. Remove the control panel cover at the
bottom of the front baffle. (refer to figures in
Chapter 8)
2. Remove the package film from batteries and
put these batteries into the battery holders
inside the control panel on the left.
Connector is snap type and has polarities.
Push up battery after making sure that
polarity orientation is correct.
3. Put the control panel cover back on the
baffle.
Bias is applied to capacitors which are insulation components and there is no
current consumption in batteries. Thus, battery life is the same as battery life
with natural discharge (about 2 years in alkaline batteries).
In order to maintain the bias effect, we recommend to replace batteries
regularly in every year or two.
Only the same type of battery (006P rectangular 9V alkaline battery) must be
used. This battery can be easily found at electric appliance stores and
convenient stores.
* The supplied batteries are for testing the bias function, and they should be
replaced with new batteries soon.
* Bias is applied to reduce distortion from components. In the event of flat
battery, there is no effect on the network circuitry, and there is no symptom as
no sound or intermittent sound from the system. However, you will notice the
level of distortion reduction effect of the bias network circuitry after new
batteries are installed.
The batteries provide a voltage bias to each of the capacitor positions in the
various networks. The biasing of the capacitors is done through a large value