User manual ALPINE MRV-1505

[. . . ] When connecting the MRV-1505/MRV-1005/MRV-T505 to the fuse box, make sure the fuse for the intended circuit of the MRV-1505/MRV-1005/MRV-T505 has the appropriate amperage. The MRV-1505/MRV-1005/MRV-T505 uses female RCA-type jacks for connection to other units (e. Due to the high power output of the MRV-1505/MRV-1005/MRV-T505, 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. [. . . ] 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-1505/MRV-1005/MRV-T505 has two sets of speaker outputs. 3 Battery Lead (Yellow) Be sure to add a 80 amp fuse 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 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. 6 Insulation Tube MRV-1505/MRV-1005 In case of using the leads (speaker/power supply cord) purchased at the market, use the hexagon screws and the hexagon wrench (M2. Do not use the speaker (­) terminals as a common lead between the left and right channels. 7 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. 8 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 1(MONO) ST 1+2 at the Speaker Output Terminal CH-1 (or CH-2). B) Set to the "1 (MONO)" position when the two channels are used for one channel of a stereo bridged system. ) c) Set to the "1 + 2" position when the two channels are used for a subwoofer system which uses the 1(MONO) ST 1+2 right channel and left channel signals summed. The CH-1 and CH-2 inputs are summed, then output from the Speaker Output Terminals CH-1(+) and CH-2 (­). ) 9 Crossover Mode Selector Switch a) Set to the "LP" position when the amplifier is used to drive a subwoofer. [. . . ] B Low Impedance Selector Switch Set to the "ON" position when a speaker with 1 ohm impedance (TOTAL) is used. 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-1505/MRV-1005/ MRV-T505 must be connected to a switched power source (ignition) in the vehicle. [. . . ]