3Setting the UnitPower IndicatorThe power indicatorlights when the poweris switched on.Terminal CoverBefore setting up the unit, unfasten thescrews with a 4 mm hexagonal wrenchand remove the terminal cover.Bass Boost ControlYou can select a bass boost level from0, 6, 9 and 12 dB.For instruction of connecting the bassboost remote control to the amplifier,see the “Connection Diagram” section.BFC (Beat Frequency Control)SwitchBFC switch is on the bottom of the unit.If you hear a beat while listening to anAM broadcast with your car stereo,change the BFC switch using a smallstandard tip screwdriver.Subsonic Select SwitchThe subsonic filter cuts inaudiblefrequencies below 20 Hz to eliminateunwanted vibrations and minimizepower loss.• To adjust the switch, use standard tip screwdriver if needed.