User manual AUSTRALIAN MONITOR AMIS120XL

[. . . ] Clever Features, Contactor Friendly Operating Manual AMIS120XL, 120 Watt Mixer Amplifier Product Description The ACM120XL is a 120 watt mixer amplifier designed for commercial installations. It features 8 microphone/line input channels and can be used for either low impedance (4 or 8 ohm) or 25v/70v line speaker systems. A host of unique features including multiple levels of muting, a VOX relay output, Transformer Balanced 600 Ohm Telephone input, 24 VDC operation and VCA master level control make the AMIS120XL a very flexible amplifier. The unit can be mounted in a standard 19" equipment rack (rack ears supplied) or it can be located on a shelf or table. Front Panel Features Microphone/Line Level Controls The level controls for the 8 inputs are labeled Ch1-Ch8. [. . . ] The pot is labelled R63 and sets the level of all 4 tones. Please note that the level of the tones is not affected by the "Master" control on the front panel. When any of the 4 tones are activated, inputs 4 to 8 are muted. Inputs 1, 2 and 3 on the other hand will mix with the tones and can be used at the same time. 600 Ohm Telephone Input The 600 ohm transformer balanced Telephone Input is paralleled with input 2. If telephone paging is required the XLR & dual RCA inputs should not be used as these inputs will be summed with the Telephone Input into channel 2. The front panel level control will set the gain for the Telephone Input. Insert Point The AMIS120XL includes an Insert Point to allow for connection of signal processors such as equalisers, compressors or Feedback Exterminators. The Insert Point is located (electronically) between the mixer and power amplifier sections of the AMIS120XL. It allows for the "mixed" output of the AMIS120XL to be processed externally and then returned to the power amplifier section of the AMIS120XL. The Insert Point is a 3 conductor (Tip, Ring, Sleeve) socket which accepts a standard stereo 6. 35mm (1/4") jack. The one jack allows for signals to be "sent" to the processor and then "returned" to the power amplifier. This is the return signal from the processor Ring Mix Output. This is the signal from the mixer stage which is to be sent to the processor Sleeve This is the ground connection When an external processor is used via the insert point, it only affects the power amplifier section of the AMIS120XL. The tape output remains unprocessed. Tape Output The AMIS120XL includes a tape recorder output with dual RCA connectors. Although the output signal is mono, dual RCA's are provided to allow for easy connection to domestic or professional tape recorders. The output level of the tape output is governed by the 8 input controls of the AMIS120XL. The front panel master control does not affect the tape output. In a practical situation, this allows for "on the fly" changes to the power amplifier level (to turn the PA system up or down) without affecting the signal being recorded. Line Output A 3 pin male XLR socket is provided to allow for connection to additional power amplifiers. The line level signal is the mixer output of the AMIS120XL allowing this "mixed" signal to be split to other amplifiers. This is most commonly used when more power (than the 120 watts of the AMIS120XL) is required. In this situation, a standard microphone lead is used to connect the line output of the AMIS120XL to the line input of a power amplifier. The speaker load then needs to be split into two (one for each amplifier) making sure that each amplifier is driving no more than it's recommended load. The line output is a balanced 700mV signal which can be used to connect (daisy-chain) up to 6 power amplifiers. [. . . ] Power down & disconnect units from mains voltage before making connections. Never hold a power switch in the "ON" position if it won't stay there itself!Do not use the unit near stoves, heat registers, radiators, or other heat producing devices. Do not block fan intake or exhaust ports. [. . . ]