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. The connections are:
Tip Amplifier in. 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. If more than 6 amplifiers are required, a distribution amplifier is recommended.
Microphone Inputs
The AMIS120XL includes 8 microphone inputs. The microphone inputs are via 3 pin XLR female sockets.
The microphone inputs are 200 ohm and are suitable for a wide range of dynamic or electret microphones.
When using electret microphones, phantom power should be enabled for those particular inputs. Phantom
power (15v DC) is available on all XLR inputs and can be switched on or off per channel. To enable
phantom power on a particular input channel, simply flip (on the rear panel) dip switch 3 (for that channel)
to the on position.
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