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2. CHANGE BATTERIES
Fender
®
offers basses with passive electronics
(no batteries) and basses with active
(battery-powered) preamps. Depending on
the instrument, your active bass may have
either a 9-volt (one-battery) system, or
an 18-volt (two-battery) system. Visit the
Knowledge Base in the Support section of
www.fender.com, where the service diagrams
link presents detailed information on more
than 250 Fender instrument models.
Typical battery life for both systems is
approximately 600 hours of playing time.
All Fender basses with active preamps are
equipped with switching jacks that engage the
battery when a cable is plugged into the jack.
To maximize battery life, unplug your cable from
the bass when not playing the instrument. As
batteries lose power, the voltage supplied to
the preamp will drop, resulting in distortion and
unwanted noise that indicate that the batteries
must be changed (note that active basses
without an active/passive switch will not operate
in passive mode when the batteries are dead).
For basses with two-battery 18-volt preamps,
always replace both batteries at the same time,
as mismatched voltages may adversely affect
the performance of the preamp. It is a good idea
to use the same brand of battery consistently.
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