Assessments - 1, GPA: 3
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Facilidade de uso
Follow these steps: 1. Set the volume control on your head unit to about the 2/3 position. 2. Adjust the amplifier LEVEL control(s) to an average listening position. 3. Turn the head unit volume all the way down, and listen for background noise. 4. Start your vehicle, and again, listen for background noise. 5. By fine tuning the LEVEL control(s), you can reduce background and engine noise, if present. These adjustments should only be made once. After that, use the head unit volume control to adjust the system volume, not the LEVEL control(s). CAUTION: Never turn the LEVEL control(s) up any higher than you need to get clear sound at 2/3 volume on the head unit. 5 PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! wiring harness R R L L from speaker terminals head unit orange black black orange L/R audio outputs head unit Electrical Connections (all models) to remote turn-on +12V head unit 12V battery 7 Input Connections inpInpuut Contnecstions LA670 LA870 4CH AMPS Low Level 4 CH Stereo Input from 2 CH Audio Source Low Level 4 CH Stereo Input from 4 CH Audio Source LA670 LA870 4CH AMPS High Level 4 CH Stereo Input from 4CH Audio Source floating ground connection High Level 4 CH Stereo Input from 4CH Audio Source common ground connection Left Output Right Output L + R Front Outputs L + R Rear Outputs head unit wiring harness R L REAR FRONT R L orange black black orange orange black black orange head unit head unit R L R L REAR FRONT orange black black orange orange black black orange head unit Y adaptors Input Connections speaSkpeakeer Conrnecstions Bridged Input Connection 4 CH Bridged Input from 2 CH Audio Source CH1+2 = Left Channel CH3+4 = Right Channel Basic Stereo Output Basic 4CH Output 9 head unit Y adaptors to a second amplifier Left Output Right Output FRONT speakers REAR speakers L R R L LEFT speaker RIGHT speaker 2CH AMPS LA670 LA870 4CH AMPS LA370 LA470 LA570 LA770 LA970 LA1470 LA1870 LA2070 LA670 LA870 4CH AMPS 2CH AMPS LA370 LA470 LA570 LA770 LA970 LA1470 LA1870 LA2070 head unit Y adaptors Speaker Connections troubleshootTriounbleshgooting 2 CH Mono-Bridged Output Bridged Mono Output 2 CH Stereo plus Mono-Bridged Subwoofer Output TROUBLESHOOTING 11 Amplifier will not power up. • Check for good ground connection. • Check that remote DC terminal has at least +12v DC. • Check that there is battery power on the + terminal. • Check all fuses. • Check that Protection LED is not lit. If it is lit, shut off amplifier briefly and then repower it. High hiss or engine noise (alternator whine) in speakers. • Disconnect all RCA inputs to the amplifier(s) – if hiss/noise disappears, then plug in the component driving the amplifier and unplug its inputs. If hiss/noise disappears, go on until the faulty/noisy component is found. • It is best to set the amplifier's input level as insensitive as possible. The best subjective S/N ratio is obtainable this way. Try to drive as high a signal level from the head u...
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