Alpine MRV-M1200 Owner s Manual english - Page 7

Speaker Output Terminals • The speaker terminals of this unit are insert terminal type. Be sure to observe correct speaker output connections and polarity in relation to the other speakers in the system. Connect the positive output to the positive speaker terminal and the negative to negative. About Bridged Connections In the bridged mode, connect the left positive to the positive terminal of the speaker and the right negative to the negative terminal of the speaker. Do not use the speaker (-) terminals as a common lead between the left and right channels. NOTES: • Do not connect the speaker (-) terminal to the vehicle's chassis. • The input is stereo but the output is monaural. • Reversing subwoofer polarity (swapping positive and negative connections to the subwoofer) may be desirable in some installations for optimum bass performance. Fuse: 25A x 4 USE THE CORRECT AMPERE RATING WHEN REPLACING FUSES. Failure to do so may result in fire or electric shock. Power Supply Terminal Battery Lead (Sold Separately) Be sure to add an in-line fuse with the battery lead 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. See below for appropriate fuse value and minimum wire gauge requirement: • 100 amp fuse, 4 AWG/21 mm2 Ground Lead (Sold Separately) 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 while keeping wire length as short as possible. Minimum required wire gauge for this connection is as follows: • 4 AWG/21 mm2 Remote Turn-On Lead (Sold Separately) Connect this lead to the remote turn-on (positive trigger, (+) 12 V only) lead of your head unit. If a remote turn-on lead is not available, see "CONNECTION CHECK LIST" section on page 8 for alternative method. NOTE: • When connecting the speaker output leads of the head unit to this unit with a Speaker Input Connector (included), you do not need to connect the remote turn-on lead, owing to the "REMOTE SENSING" function of this unit. However, the "REMOTE SENSING" function may not work depending on the signal source connected. In such a case, connect the remote turn-on lead to an incoming power supply cord (accessory power) in the ACC position. Speaker Level Input Connector These input leads are 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. The MRV-M1200 accepts input from high power or standard power head units. NOTE: • For the "Speaker Level Input System" setting, connecting the Remote Turn-On Lead is not required due to the "REMOTE SENSING" function of this product. However, the "REMOTE SENSING" function may not work depending on the signal source connected. In such a case, connect the Remote Turn-On Lead to an incoming power supply cord (accessory power) in the ACC position. 5-EN