User manual AUSTRALIAN MONITOR AMIS604P

[. . . ] The amplifier can be mounted in a standard 19" equipment rack (rack ears supplied) or it can be used on a shelf or table. The AMIS604P features a line level input (with parallel output) per channel and is normally used with mixers, mixer amplifiers or other power amplifiers. Front Panel Features Power Switch The black rocker switch on the right hand side of the front panel is used to switch the amplifier on and off. When the amplifier is connected to an appropriate AC power source and is switched on, the blue power LED will illuminate. In DC operation mode, the amplifier is always on and the blue power LED will always be illuminated. On LED The blue "On" LED above the power switch will illuminate when the amplifier is connected to mains power and is switched on. [. . . ] When used individually, the low impedance load should be 8 ohms or higher while the 70v line load should not fall below 80 ohms per amplifier. When both low impedance and 25/70v outputs are used simultaneously on the one amplifier, ensure that neither output is loaded to maximum. Level Control Located next to the XLR input/output is a recessed screwdriver adjustable level control. The level control is an input attenuation control normally used to match the amplifier to a wide variety of input signals. In essence, the amplifier is designed to receive a 700mv input signal however the level control can be used to increase the level for lower signals or decrease the level for higher input signals. In normal use, the level control is used as a `set and forget' master level control for the amplifier. XLR Audio Input and Parallel Output The AMIS604P includes both male and female 3 pin XLR connectors per channel. While the female is normally used as the input to the amplifier, both XLR's are connected in parallel so either will work. When signal is connected to one XLR, the other XLR becomes a line level output allowing the input signal to be distributed (split) to other amplifiers. In some projects, the same input may be looped through to multiple amplifiers using this method. Up to 6 amplifiers can be looped together without any noticeable loss in level. A distribution amplifier should be used when more than 6 amplifiers need to be looped. Pin 3: Cold, -, Negative Fuse Sizes Mains, 115VAC: 5 Amperes Slow Blow. Notes: The DC fuse is located on the circuit board. This is a feature of the AMIS series amplifier, which is equipped with a current limiting circuit preventing excessive DC current, thus eliminating the risk of blowing high tensions fuses. In the unlikely event that the DC fuse actuates, the output transistors should be checked, as it is probable that the amplifier has been subjected to very extreme conditions. Important Safety Information 1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid. Make sure power outlets conform to the power requirements listed on the back of the unit. The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles, and the point where they exit from the appliance. Always operate the unit with the AC ground wire connected to the electrical system ground. Precautions should be taken so that the means of grounding of a piece of equipment is not defeated. [. . . ] Never connect a "hot" (red) output to ground or to another "hot" (red) output!The power cord of equipment should be unplugged from the outlet when left unused for a long period of time. Service Information Equipment should be serviced by qualified service personnel when: A. The equipment does not appear to operate normally, or exhibits a marked change in performance E. [. . . ]