Alpine HDA-M80 Owners Manual - Page 8

About Subwoofer Input/Output Terminals (HDA-M80/HDA-V90 only) • The input is stereo but the output is monaural. • Reversing subwoofer polarity (swapping positive and negative connections to the subwoofer) may be desirable in some installations for optimum bass performance. About Bridged Connections In the bridged mode, connect the left positive to the positive terminal of the speaker and the right negative to the negative terminal of the speaker. Do not use the speaker (-) terminals as a common lead between the left and right channels. NOTE: • Do not connect the speaker (-) terminal to the vehicle's chassis. Cautions on wire lead connections When using third-party wire cables (power supply wire), use the supplied screws to simplify the connection. Refer to the description below for the proper procedure. If you are in doubt about how to make this connection, consult your dealer. 1. Check the wire size. • For details on the wires size to be used, refer to the supplied "Cautions on Power Supply Wires Connection" and "Cautions on Power Supply Wires" (page 18), and then use the wire of the specified size. • If the wire gauge used is unknown, ask your dealer. 2. Remove the insulation from the ends of the wire leads by about 7 - 10 mm (9/32" - 13/32"). 7 - 10 mm (9/32" - 13/32") Lead end side of the product Twist the tip of wire leads NOTES: • If length of the exposed wire is too short, a poor connection may occur causing operation failure or sound interruption. • On the other hand, if the length is too long, an electrical short-circuit may occur. 3. Tighten the hexagon hole screw with the hexagon wrench (Large or Small) (included) to secure the lead. Before making this connection, use insulated shrink tubing to cover any exposed wire extending beyond the terminal. Battery Connector Battery Lead Hexagon wrench Remote Turn On Lead Ground Lead Hexagon wrench Speaker Connector Speaker Output Lead (+) Speaker Output Lead (-) NOTES: • Be sure to use the Hexagon hole screw attached to the Battery Connector or Speaker Connector. • For safety reasons, connect the battery leads last. • To prevent disconnection of the leads or dropping of the unit, do not use the cabling to carry the unit. CON Please ch listed be Remote a. The h or pow b. The h only w or CD c. The h outpu or can other powe If any turn-o HDA-V powe use a tap. U HDA-M stay o If this Single menti the HD This sw the HD switch by the when ampli 6-EN ALPINE HDA-M80/HDA-F60/HDA-V90 68-44781Z25-A (EN/DE/FR/ES/IT/SE/RU/CS)