User manual ALPINE MRV-T301

[. . . ] When connecting the MRV-T301 to the fuse box, make sure the fuse for the intended circuit of the MRV-T301 has the appropriate amperage. The MRV-T301 uses female RCA-type jacks for connection to other units (e. Due to the high power output of the MRV-T301, 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. [. . . ] If you need to extend this lead, the wire gauge should be 8 AWG or larger. 4 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. 5 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. 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 the coating 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 Alpine noise suppressors, contact them for further information. ⷠYour Alpine dealer knows best about noise prevention measures so consult your dealer for further information. 1 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. 2 Speaker Output Terminals The MRV-T301 has two sets of speaker outputs. Do not use the speaker (­) terminals as a common lead between the left and right channels. 7 Speaker Input Leads These leads are input leads for use with head units not equipped with preamp outputs. When not using the RCA Line Input connectors, you should connect these wires to the speaker output leads of your head unit. D High-pass Output Phase Switch Sets the phase of this output to 0° (in phase) or 180° (inverted) independently from the other output. Often, the subwoofer and midrange (or midrange and tweeter) may be acoustically out of phase with each other, meaning all the sound will cancel completely or partially. Always try the phase switch to establish the best setting before fine-tuning the crossover frequencies. Input Mode Selector Switch a) Set to the "ST" position (center) when the two channels are used in stereo. the CH1 (or CH-2) input will output at the Speaker 1(MONO) ST 1+2 Output Terminal CH-1 (or CH-2). [. . . ] I 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. 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. [. . . ]