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Clever Features, Contactor Friendly
AMIS250
250w Mixer Amplifier
Operating Manual
AMIS250, 250 Watt Mixer Amplifier
Product Description
The AMIS250 mixer amplifier is designed for commercial installations. It operates on 115 VAC, 60Hz and
may be desk or rack mounted (rack mount kit supplied). The AMIS250 delivers 250 watts into a load of 4
ohms, 25 or 70 volt line. As standard, the AMIS250 is supplied self standing with rubber feet. It features 6
microphone/line input channels as well as 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 AMIS250 a very flexible amplifier.
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Summary of Contents for AUSTRALIAN MONITOR AMIS250
- Page 1 The AMIS250 mixer amplifier is designed for commercial installations. It operates on 115 VAC, 60Hz and may be desk or rack mounted (rack mount kit supplied). The AMIS250 delivers 250 watts into a load of 4 ohms, 25 or 70 volt line. As standard, the AMIS250 is supplied self standing with rubber feet. It features 6...
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Page 2: Front Panel Features
LED will always be illuminated. Protect LED A feature of the AMIS250 is high temperature protection. In most applications, the internal cooling fan will most probably never switch on. When used with demanding speaker loads or in difficult operating environments, the fan may regularly switch on to cool the amp down and then switch off again. -
Page 3: Rear Panel Features
24 Volt DC Power Inlet The AMIS250 features optional 24VDC power to run off a battery supply if required. This is connected via the rear terminal strip. The front panel Power Switch will not switch DC power ‘on’ or ‘off’ in DC operation. -
Page 4: Tape Output
The balanced XLR line level output provides a maximum of 700mV to allow for connection to up to 6 power amplifiers. Simply run a balanced cable from the line out of the AMIS250 to the line input of the power amplifier. Pin connections are: pin #1-earth; pin #2-signal (high, +); pin #3-signal (low, -). - Page 5 AMIS250. The tape output remains unprocessed. VCA Control An external pot (500K) can be connected to the AMIS250 for remote control of the master level. The external pot is governed by the master level of the amplifier allowing the installer to set the volume, then lock the amplifier in a rack, leaving the user with just a master volume control that cannot go beyond the level set on the master (front panel) control.
- Page 6 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.
- Page 7 Australian Monitor Audio Inc is not responsible for damage to loudspeakers for any reason. 18. Do not ground any red (“hot”) terminal. Never connect a “hot” (red) output to ground or to another “hot”...
- Page 8 Ph: 61-2- 9647 1411 Fax: 61-2-9748 2537 E-mail: international@australianmonitor.com...
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