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Battery Installation
The network of this system utilizes the proprietary JBL “charge-couple
method” to activate capacitors by applying DC bias using battery power; this
eliminates unwanted distortions. Please refer to procedures below and install
the supplied batteries in the battery holders.
Battery Installation Procedures:
1.
Remove the control panel cover at the
bottom of the front baffle (refer to figures
in Chapter 7).
2.
Remove the packaging film from batteries
and place these batteries into the battery
holders inside the control panel, on the left.
The connector is the snap type and has
polarities. Push each battery up after making
sure that the polarity orientation is correct.
3.
Put the control panel cover back on the baffle.
Bias is applied to capacitors, which are insulation components; therefore, there
is no current consumption in batteries. Thus, the battery life is the same as that
for batteries with natural discharge (about two years in alkaline batteries).
Only 006P rectangular 9V alkaline batteries may be used. This battery can be
easily found at electronic/appliance stores and convenience stores.
Please Note:
The supplied batteries are for testing the bias function; they should be
replaced with new batteries as soon as possible.
Bias is applied to reduce distortion from the components. In the event
of a flat battery, there is no effect on the network circuitry, and there
is no symptom (e.g., no sound or intermittent sound from the system).
However, you will notice an effect on the level of distortion reduction
in 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
resistor (2.2 MO) and thus draws no appreciable current. The expiration date
30


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