User manual ALPINE MRV-F305

[. . . ] Never connect left and right channel speaker cables to each other or to the vehicle body. This unit is designed for 12 VDC, negative ground systems. Make sure that your vehicle has this type of electrical system before connecting the power cable. When making connections to the car's electrical system, be aware of the factory installed components (e. [. . . ] 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. 1 , 2 RCA Input Jacks (CH3/4), (CH1/2) 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, Right to Right, Front to Front and Rear to Rear. 3 , 4 RCA Pre-out Jacks (CH1+3) , (CH2+4) 5 , 6 Speaker Output Terminals (CH1/2) , (CH3/4) The MRV-F505/MRV-F405/MRV-F305 has two sets of speaker outputs. 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 ground. NOTE: Do not connect speaker leads together or to chassis ground. 7 Battery Lead Terminal 8 Remote Turn-on Lead Terminal 9 Ground Lead Terminal - Insulation Tube a Battery Lead (Yellow) Be sure to add a 5 50 amp fuse (or two 25A fuses in parallel) as close as possible to the battery's positive (+) terminal. This fuse will protect your vehicle's electrical system in case of a short circuit. If you need to extend this lead, the wire gauge should be 8 AWG or larger. 30 amp fuse b Remote Turn-On Lead (Blue/White) Connect this lead to the remote turn-on or power antenna (positive trigger, (+) 12V only) lead of your head unit. C Ground Lead (Black) Connect this lead securely to a clean, bare metal spot on the vehicle's chassis. Verify this point to be a true ground by checking for continuity between that point and the negative (­) terminal of the vehicle's battery. Ground all your audio components to the same point on the chassis to prevent ground loops. D Input Mode Selector Switch a) Set to the "ST" position (center) when the two channels are used in stereo. the CH-1 (or CH-2) input will output at 1 ST 1+2 the Speaker Output Terminal CH-1 (or CH-2). B) Set to the "1" position when the two channels are used for one channel of a stereo bridged system. 1 ST 1+2 c) Set to the "1 + 2" position when the two channels are used for a subwoofer system which uses the right channel and left channel signals summed. l Input Channel Selector Switch a) Setting this switch to 1/2 will send the signal at the inputs of CH1/2 to CH3/4 of the MRV-F505/MRV-F405/MRV1/2 3/4 1+3/2+4 F305. This eliminates the need for "Yadaptors when using a head unit with a single pair of pre-amp output. [. . . ] If any of the above conditions exist, the remote turn-on lead of your MRV-F505/MRV-F405/ MRV-F305 must be connected to a switched power source (ignition) in the vehicle. Be sure to use a 3A fuse as close as possible to this ignition tap. Using this connection method, the MRV-F505/MRV-F405/ MRV-F305 will turn on and stay on as long as the ignition switch is on. If this is objectionable, a SPST (Single Pole, Single Throw) switch, in addition to the 3A fuse mentioned above, may be installed in-line on the MRV-F505/ MRV-F405/MRV-F305 turn-on lead. [. . . ]