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Indicador Fig. Do not connect this lead to the fuse block. To prevent external noise from entering the audio system. Your Alpine dealer carries various Alpine noise suppressors, contact them for further information. Be sure to observe correct channel connections; Left to Left and Right to Right. Be sure to observe correct speaker output connections and phasing. In the stereo mode, connect the right speaker outputs to the right speaker and the left to left. Connect the positive output to the positive speaker terminal and the negative to negative.
In the bridged mode, connect the left positive to the positive terminal on 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. NOTE: Do not connect speaker leads together or to chassis ground. 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.
Also, 2nd order filters are naturally out-of-phase electrically. Always try the phase switch to establish the best setting before fine-tuning the crossover frequencies. The CH-2 input accepts no signal. Refer to Fig. 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.
If the indicator becomes amber, decrease the volume on the head unit. If you need to extend this lead, the wire gauge should be 8 AWG or larger.