Battery And Charging System; Crossover Settings - Rockford Fosgate POWER 1000 MOSFET Owner's Manual

BATTERY AND CHARGING SYSTEM

High-powered amplifiers will naturally put an extra load on the
battery and charging system. A Power 1000 MOSFET may draw
up to 50-100 amperes average current.
Standard electrical systems will have to be modified to handle
the extra load of an amplifier without problems. If multiple
amplifiers are installed, average currents will be high enough to
overload the standard alternator and reduce alternator and
battery life. In this case it's a good idea to use a heavy-duty
alternator and a high quality battery.
If the sound system will be used often when the car is not
running, the battery will obviously be discharged, perhaps
enough to prevent restarting. The discharge/recharge cycle will
reduce battery life, and alternator life will be shorter because of
the high-current recharge requirements.
If problems arise:
a) Use a premium battery or deep-discharge marine battery.
b) Use a heavy duty alternator.
c) Use a trickle-charger or battery charger.
d) Install a second battery with a switching system for
recharge.

CROSSOVER SETTINGS

Recommended crossover settings to use with an external active
crossover (i.e. Rockford Fosgate XV-l). When using the XV-I,
reverse the phase of the high channel.
Crossover
Setting, Hz
(Low/High) Suggested Applications
Flat/Flat Dual Stereo systems with two pairs of full range
speaker systems. All bridged stereo systems.
Flat/l 00 Dual Stereo systems with front speakers having
less bass capability
Flat/275 Dual stereo with small front speakers.
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