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MPS1000 MARINE POWERED SUBWOOFER OWNER’S MANUAL www.jbl.com The Official Brand of Live Music.
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JBL’s MPS1000 is designed to shut off if it senses that your battery’s voltage has fallen below 10 volts, in order to prevent your battery from becoming fully discharged while you’re on the water.
However, the actual process may require several readjustments of each control, since the settings will interact with each other. If necessary, consult your authorized JBL car or marine audio dealer for help in tuning your system. NOTE: Depending on the MPS1000’s orientation and location in your boat, reversing the phase may (or may not) increase or decrease the amount of upper bass being reproduced.