User manual ALPINE PDX-F6

[. . . ] When drilling holes in the chassis for installation, take precautions so as not to contact, damage or obstruct pipes, fuel lines, tanks or electrical wiring. Bolts or nuts used for the brake or steering systems (or any other safety-related system), or tanks should NEVER be used for installations or ground connections. Using such parts could disable control of the vehicle and cause fire etc. Return it to your authorized Alpine dealer or the nearest Alpine Service Center for repairing. [. . . ] Remove the Top Cover by inserting a flat-tipped instrument (such as a panel removal tool or slotted screwdriver) into the 2 notches of the unit (marked A). If removal is still not possible, bend the Top Cover and remove the tabs on both sides. Fasten the unit down with the four self-tapping screws (M4 x 36, supplied). Attach the Stacking Plates (*) on the first unit with Machine Screws M3 x 7(*). Next, install the third unit as described for the second unit in B above. Before making connections, be sure to turn the power off to all audio components. Connect the yellow battery lead from the amp directly to the positive (+) terminal of the vehicle's battery. If you make this connection yourself, ensure the connection is correct by following the instructions below carefully. To prevent disconnection of the leads or dropping of the unit, do not carry the unit by the wire. Only use 4AWG-6AWG/13 mm2­21 mm2 (the wire gauge) for this connection. If in doubt, consult your dealer or Customer Support regarding correct wire gauge to use. Strip back between 7-10 mm (9/32"-3/8") of the power wire's insulation to expose the conductor. notes: · If the length of the exposed conductor is too short, a poor connection may occur causing operation failure or sound interruption. Conversely, if the exposed conductor is too long, an electrical short-circuit may occur. Loosen the unit's wire terminal hexagon screws, and insert the exposed conductor into the terminal and finally tighten to secure the connection. Keep electrically conductive objects away from the unit's terminals/parts (power terminals, fuses, speaker output terminals, RCA connectors, etc. Locate the unit and route the leads at least 10 cm (315/16") away from the car harness. Keep the battery power leads as far away from other leads as possible. Connect the ground lead securely to a bare metal spot (remove any paint or grease if necessary) of the car chassis. If you add an optional noise suppressor, connect it as far away from the unit as possible. Your Alpine dealer carries various noise suppressors, contact them for further information. Your Alpine dealer knows best about noise prevention measures so consult your dealer for further information. [. . . ] K, n Crossover Mode Selector Switch a) Set to the "LP" position when the amplifier is used to drive a subwoofer. the frequencies above the crossover point will be attenuated at 12 dB/octave. B) Set to the "HP" position when the amplifier is used to drive a tweeter/midrange system. the frequencies below the crossover point will be attenuated at 12 dB/octave. [. . . ]