User manual ALPINE MRV-F405

[. . . ] When connecting the MRV-F505/MRV-F405/MRV-F305 to the fuse box, make sure the fuse for the intended circuit of the MRV-F505/MRV-F405/MRV-F305 has the appropriate amperage. The MRV-F505/MRV-F405/MRV-F305 uses female RCA-type jacks for connection to other units (e. Due to the high power output of the MRV-F505/MRV-F405/MRV-F305, it is important that all connections are clean and well secured, or damage could result. When installation and connections are completed, check the followings: a) Connections are proper. [. . . ] 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. Do not use the speaker (­) terminals as a common lead between the left and right channels. 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. B) Set this switch to 3/4 to have the inputs of CH3/4 accept independent input signals. An example of this application 1/2 3/4 1+3/2+4 would be the use of a head unit with dual pre-amp outputs. C) Setting this switch to 1 + 3/ 2 + 4 will sum the CH1 and CH3 input and send it to CH3 while the CH2 and CH4 1/2 3/4 1+3/2+4 inputs are summed and sent to CH4. When used with a dual-preamp output head unit, this will provide a non-fading (constant bass) subwoofer output with fadable front and rear output going to a separate Satellite amplifier. M Input Level Selector Switch Set to the "4V" position when the head unit with 4V output voltage is used. When the head unit with non-4V output voltage is used at the "4V" position, the volume will be decreased. [. . . ] 3 ST 3+4 c) Set to the "3 + 4" position when the two channels are used for a subwoofer system which uses the right channel and left channel signals summed. The head unit's power antenna lead is activated only when the radio is on (turns off in the tape or CD Mode). The head unit's power antenna lead is logic level output (+) 5V, negative trigger (grounding type), or cannot sustain (+) 12V when connected to other equipment in addition to the vehicle's power antenna. 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. [. . . ]