User manual ALPINE MRV-F409

[. . . ] OWNER'S MANUAL Please read this manual to maximize your enjoyment of the outstanding performance and feature capabilities of the equipment, then retain the manual for future reference. Please read this OWNER'S MANUAL thoroughly to familiarize yourself with each control and function. We at ALPINE hope that your new MRV-F409 will give you many years of listening enjoyment. In case of problems when installing your MRV-F409, please contact your authorized ALPINE dealer. [. . . ] Make sure there are no objects behind the surface that may become damaged during drilling. Position the MRV-F409 over the screw holes, and secure with four self-tapping screws. NOTE: To securely connect the ground lead, use an already installed screw on the metal part of the vehicle (marked (5)). Be sure this is a good ground by checking continuity to the battery (­) terminal. As much as possible connect all equipment to the same ground point. 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. Locate the unit and route the leads at least 10 cm 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, dirt 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. ⷠYour Alpine dealer knows best about noise prevention measures so consult your dealer for further information. Be sure to observe correct speaker output connections and phasing. Do not use the speaker (­) terminals as a common lead between the left and right channels. Do not connect this lead to the vehicle's chassis. NOTE: Do not connect speaker leads together or to chassis ground. 2 RCA Input Jacks Connect these jacks to the line out leads on your head unit using RCA extension cables (sold separately). Be sure to observe correct channel connections; Left to Left and Right to Right. (Front to Front and Rear to Rear) NOTE: For a single channel input in MONO mode, use the "CH-1" RCA input jack. This is an ideal output for driving a separate subwoofer amp. [. . . ] The full frequency bandwidth will be output to the speakers with no high or low frequency attenuation. 11 Low-Pass (LP) Crossover Mode Selector Switch a) Set to the "ON" position when the amplifier is used to drive a subwoofer. the freOFF ON quencies above the crossover point will be attenuated at 12 dB/octave. B) Set to the "OFF" position when the amplifier will be used for driving full-range OFF ON speakers. [. . . ]