User manual AUSTRALIAN MONITOR AMIS120

[. . . ] Start with the controls set to level `0' and turn the controls clockwise until the desired mix level for each channel is reached. Bass Control Setting this control in the centre position will give an overall flat bass response. Adjusting the bass control in a clockwise direction will provide up to 12 dB of bass boost @ 100 Hz. Adjusting the bass control in a counter-clockwise direction will provide up to -12 dB of bass cut @ 100 Hz. It is recommended to start with the bass control at the centre `0' position and adjust if necessary. Treble Control Setting this control in the centre position will give an overall flat treble response. [. . . ] Spare Tone Generator Common (use with one of the 4 tones listed below) Pre-Announce Chime Alert Tone Bell Chime Evacuation Tone 24 volt DC Vox Relay Out VCA Note: The minimum impedance (or maximum load) at 100 volt line should be no less than 80 Ohms for the ACM120 and no less than 160 Ohms for the AMIS60. Speaker (Zone) Output Terminal Strip Reading from left to right, these screw terminal pairs correspond to the switched 70 volt line outputs and are numbered 6 through 1 as indicated on the front panel of the amplifier. For each pair, the left hand terminal is the 100 volt output and the right hand terminal is the common. Phantom Power Button This button enables or disables the 15 volts DC phantom power which is available on all microphone inputs (XLR's). The "in" position indicates that phantom power is `on' for all mics. The "out" position means that phantom power is switched `off' for all mics. Phantom power is required for electret condenser microphones that require DC power to operate. While some of these microphones can operate from an internal battery, having phantom power available on the amplifier eliminates the need to regularly change batteries in the microphone. While phantom power is not required for the more common Dynamic microphones, it will not damage them providing they are balanced. Do not plug an unbalanced microphone in to any amplifier or mixer when phantom power is switched `on'. Line Output The balanced XLR line level output provides a maximum of 700mV to allow for the connection of up to 6 power amplifiers. Simply run a balanced cable from the line out of the AMIS60 or AMIS120 to the line input of the power amplifier. Pin connections are: pin #1-earth; pin #2-signal (high, +); pin #3-signal (low, -). Tape Output Dual RCA output connectors provide a line level output with a maximum of 350mV into 10K Ohms which is ideal for connection to most standard tape recorders. This output is sourced before the master gain control and as such, the tape output level is not influenced by the operation of the master gain control. Microphone Inputs All four inputs are dual mic/line with microphone inputs being via a 3 pin XLR connector per channel. Pin connections are: pin #1-earth; pin #2-signal (high, +); pin #3-signal (low, -). Reading from left to right across the rear panel, the inputs are 4, 3, 2, & 1. Line Inputs All four inputs are dual mic/line with line/auxiliary inputs being via dual RCA connectors per channel. Line inputs 1, 2 & 3 have an input sensitivity of 150mV @ 100K ohms. Input 4 has an input sensitivity of 300mV @ 220K ohms making it suitable for high level inputs such as a CD player. Reading from left to right across the rear panel, the inputs are 4, 3, 2, & 1. Insert Point The AMIS60 & AMIS120 include 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 AMIS60 &AMIS120. It allows for the "mixed" output of the amplifier to be processed externally and then returned to the power amplifier section of the AMIS60 & AMIS120. 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 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 AMIS60 &AMIS120. The tape output remains unprocessed VOX Relay Output The terminal strip to the immediate right of the AC inlet features a relay output. [. . . ] Do not connect the inputs / outputs of amplifiers or consoles to any other voltage source, such as a battery, mains source, or power supply, regardless of whether the amplifier or console is turned on or off. Do not run the output of any amplifier channel back into another channel's input. Do not parallel- or series-connect an amplifier output with any other amplifier output. Australian Monitor Audio Inc is not responsible for damage to loudspeakers for any reason. 18. [. . . ]