User manual AUDIO DESIGN LA-1000MD

[. . . ] ⷠAftermarket amplifiers will put an increased load on the vehicle's battery and charging system, which can reduce battery and alternator life. It is strongly recommended to upgrade your factory alternator and battery for optimum performance from your new audio system. Choose a mounting location that will be secure and offer plenty of unobstructed space for proper cooling. Keep RCA cables close together but isolated from the amplifier's power cables and any high power auto accessories, especially electric motors. [. . . ] NOTE: The switched voltage is usually taken from the source unit's accessory/remote lead. Connect the source signal to the amplifier by plugging the RCA cables/high level inputs into the input jacks at the amplifier. When using a Master/Slave configuration (MD models only), select which amplifier will be the master, then set the mode switch to Master and connect RCA cables to the input jacks. the Slave amplifier(s); set the mode switch to Slave and connect RCA cables to the Slave in/out jacks from the Master's Slave in/out jacks. NOTE: When using High Level Inputs, if audible engine noise is present, connect the Black wire to chassis ground. If noise is still present, contact your local authorized dealer or Lightning Audio customer service. When using a Master/Slave setup do not exceed more than two amplifiers. Strip the speaker wires 1/2" and insert into the speaker terminal and tighten the setscrew to secure into place. DO NOT chassis ground any of the speaker leads as unstable operation may result. Check all power and ground connections for frayed wires and loose connections. Operation Adjusting Level: To adjust the level setting, turn the amplifier gain level to the lowest setting. Turn the source unit volume up until distortion is audible and then slowly down until the distortion is inaudible (approximately ¾ volume position). Next, increase the amplifier level setting until once again distortion is audible and then down slowly until the distortion is inaudible. NOTE: Proper level setting is done by a trained professional utilizing an oscilloscope. for a more in depth setting procedure , contact Lightning Audio Technical Support. In a Master/Slave setup ONLY adjustments made to the master amplifier will effect the output. With the system playing at normal listening level, turn the crossover adjustment knob up slowly until the desired crossover point is achieved. Example: subwoofers- low pass with an 80Hz crossover point and full-range- high pass with a 100Hz crossover point NOTE: Some models include a subsonic filter with a variable 15-40Hz high pass filter designed to prevent frequencies below the audio range from being applied to the subwoofer from the amplifier. [. . . ] Some states do not allow limitations on the length of an implied warranty, so this limitation may not apply. No person is authorized to assume for Lightning Audio any other liability in connection with the sale of the product. ⷠHow to obtain service Defective products should be returned to your local authorized Lightning Audio Dealer for warranty service or, you may call 1-888881-8186 for Lightning Audio customer service. You must obtain an RA# (Return Authorization number) prior to returning any product to Lightning Audio. [. . . ]