User manual ALPINE PDX-4 150

[. . . ] Introduction: Please read this OWNER'S MANUAL thoroughly to familiarize yourself with each control and function. 150 will give you many years of listening enjoyment. In case of problems when installing your PDX-4. 150 , please contact your authorized ALPINE dealer. [. . . ] Fasten the unit down with the four self-tapping screws (M4 x 40, supplied). Attach the four joint caps in the four corners of the first unit with 2 machine screws (M2. Stack the second unit on top of the installed unit, aligning the second unit's feet with the joint caps of the first unit. Remove the four corner top caps of the second unit using the hexagon wrench (large, supplied). Insert the four machine screws (M4 x 36, supplied) through the top of the second unit into the four joint caps of the lower unit to connect them together. 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. Do not connect this lead to the fuse block. cAUTION Caution on connection terminals/parts · Do not allow other objects (particularly electrically conductive) to get too close or in contact with any of the unit's terminals/parts (power supply, fuse, speaker output terminal, RCA connector, etc. Doing so may result in short circuit or accident. Locate the unit and route the leads at least 10 cm (3-15/16") 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. The power wire cannot be connected until its end has been stripped. Below explains how to connect the stripped end of the power wire. notes: · Use the supplied hexagon screws for this connection. It is highly recommended that this be carried out by the dealer. If you make this connection yourself, ensure the connection is correct by following the instructions below carefully. [. . . ] Conversely, if the exposed conductor is too long, an electrical short-circuit may occur. Insert the positive speaker wire into the positive speaker terminal, and the negative speaker wire into the negative speaker terminal. Speaker plug/Prise du haut-parleur/ Toma del altavoz Hex screw hole/Orifice de la vis à six pans/Agujero de tornillo hexagonal Negative lead terminal hole/Orifice de la borne du conducteur négatif/Agujero del terminal del conductor negativo Speaker negative terminal/Borne négative du haut-parleur/Terminal negativo del altavoz Speaker wire (negative)/Câble du hautparleur (négatif)/Cable del altavoz (negativo) Positive lead terminal hole/Orifice de la borne du conducteur positif/Agujero del terminal del conductor positivo Positive speaker terminal/Borne positive du haut-parleur/Terminal positivo del altavoz Speaker wire (positive)/Câble du hautparleur (positif)/Cable del altavoz (positivo) When making adjustments 8-14 below, remove the hexagon screw (indicated by in the illustration) using the hexagon wrench (small, supplied), and then open the control cover. , # Crossover Frequency Adjustment Knob Permits adjustment of the crossover frequency, by rotating the knob to select any frequency between 30 to 400 Hz as the crossover point. [. . . ]