AUSTRALIAN MONITOR AMIS604 Bedienungsanleitung

Clever Features, Contractor Friendly

AMIS604

4 x 60w Mixer Amplifier

Operating Manual

AMIS604, 4 x 60 Watt Mixer Amplifier

Product Description

The AMIS604 is a 4 x 60 watt mixer amplifier designed for commercial installations. It features 4

independent 60 watt mixer amplifiers within the one 2 rack unit chassis. Each amplifier features 3 balanced

microphone/line input channels and outputs for either low impedance (8 ohm) or 25v/70v line speaker

systems. A host of unique features including VOX muting, VCA master level control and optional tone

generator/VOX relay cards make the AMIS604 a very flexible amplifier. The unit can be mounted in a

standard 19” equipment rack (rack ears supplied) or it can be used on a shelf or table.

Front Panel Features

Input Level Controls

The front panel is split into 4 sections, one for each mixer amplifier. The level controls for each amplifier

are labelled Mic-Line 1 through to Mic-Line 3. These level controls are used to set up a suitable “mix” of

all the various input sources connected to each amplifier, for example microphones, CD players, cassette

decks. If a master level control is desired per amplifier, an external 500K pot can be connected (per

amplifier) to the rear panel for remote control of the master level of each amplifier.

Bass Control

Each amplifier within the AMIS604 includes a recessed, screwdriver adjustable 2 band equalisation system.

The Bass control allows the user to increase or decrease the amount of bass in the system. The control

allows for 12dB of cut or boost at 100Hz. If no bass cut or boost is required, the control should be in the

centre position.

Treble Control

Each amplifier within the AMIS604 includes a recessed, screwdriver adjustable 2 band equalisation system.

The Treble control allows the user to increase or decrease the amount of treble in the system. The control

allows for 9dB of cut or boost at 10kHz. Generally, a small increase of the treble control makes a system

sound ‘brighter’. If no treble cut or boost is required, the control should be in the centre position.

VCA Master Control

For applications requiring remote level control, provision has been made on the rear panel of the AMIS604

to connect an external 500K pot for remote control of the master level of each amplifier.

Power Switch & “On” LED

The black rocker switch on the right hand side of the front panel is used to switch the amplifier “on” and

“off”. The ‘up’ position is “on”. When the amplifier is connected to an appropriate AC power source and is

switched “on”, the blue “on” LED will illuminate. This switch will not turn DC power on or off in DC

operation. In DC operation mode, the amplifier is always on and the blue power LED will always be

illuminated.

Signal LED’s

The four green “Signal” LED’s located next to the ‘On’ LED indicates that the AMIS604 is passing audio.

One LED is provided per amplifier. The signal LED is a simple method to trouble-shoot installations

especially in multi-amplifier projects.

Rack Mounting

The AMIS604 is supplied with rack ears attached to allow mounting within a standard 19” equipment rack.

As is the case with almost all audio products, adequate ventilation and air flow is required. When installing

multiple AMIS amplifiers within the one rack, it is recommended that at least 1 rack unit of ventilation

space is left between every two amplifiers. For table or shelf mounting, the rack ears can be removed using

a screwdriver. Once the rack ears are removed, please reinstall the screws.

Rear Panel Features

AC Power Inlet

The 3 pin IEC power inlet is located on the bottom left of the rear panel and accepts a standard mains

power lead fitted with an IEC connector. The inlet is equipped with an in-built AC fuse holder fitted with a

5 Amp slow blow fuse plus a spare fuse.

Please ensure that the mains power cord is disconnected before attempting to check or

replace this fuse. Power consumption is 400 watts (max).

24 Volt DC Power Inlet

The AMIS604 feature optional 24VDC power to run off a battery back-up 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. In this mode the amplifier is always ‘on’.

Mic/Line Input Terminal Strip

Located on the top half of the rear panel are the input connections for all 4 amplifiers. Each amplifier will

accept balanced microphone or line inputs (selectable via an internal dip switch). Additionally, a remote pot

can be connected to each amplifier for external control of the master level.

The rear panel is split into four sections, one for each amplifier. Looking at the back panel and reading

from left to right the amplifiers are 4, 3, 2 and 1. In other words, the input and output section is directly

behind the relevant front panel controls.

The inputs are labelled Ch1, Ch2 and Ch3. All are balanced with the connection reading left to

right as “Ground, + positive, - negative”. Each input can be switched to be either mic or line level

via a dip switch behind each input and accessible through the top lid. Additionally, phantom

power (+15v DC) is selectable per input. The dip switch settings are:

Balanced Mic Level - 1 and 2 On

Balanced Line Level - 1 and 2 Off

Phantom Power (+18v) - 3 ‘On’ to enable phantom power or ‘Off’ to disable phantom power

VCA Remote Master Level Control

Located on the right side of each input terminal strip is a two position screw terminal block for an external

pot. For remote master level control, an external 500K pot can be connected per amplifier.

Speaker Output Terminal Strip

Located on the bottom half of the back panel is the speaker output terminal strip. Four separate speaker

output terminal strips are provided, one for each amplifier. Looking at the back panel and reading from left

to right the amplifiers are 4, 3, 2 and 1. In other words, the speaker output section is directly behind the

relevant front panel controls.

Each of the four amplifiers in the AMIS604 can work with 8 ohm and/or 25/70 volt line speakers systems.

The various outputs are marked as follows:

COM Common or “-” for low impedance speaker loads (8 ohms).

8Positive “+” for 8 ohm speaker loads (use with common)

COM Common or “-” for 25v or 70v speaker loads (maximum load of 80 ohms at 70v)

25 Positive “+” for 25v line speaker loads (use with common)

70 Positive “+” for 70v line speaker loads (use with common)

Please ensure that the correct “Common” is used. Low impedance and 25/70v loads can be used

simultaneously but please pay careful attention to the overall speaker load. When used individually, the low

impedance load should be 8 ohms or higher while the 70v line load should not fall below 80 ohms. When

both outputs are used simultaneously, ensure that neither output is loaded to maximum.

VOX Muting

The AMIS604 includes a VOX muting circuit which is independent for each amplifier. The unit is factory

set so that input 1 of each amplifier has VOX priority over inputs 2 and 3 for that amplifier. Basically,

when signal is present on input 1, audio from inputs 2 and 3 is muted. As mentioned, each amplifier is

totally independent so the VOX circuit from one amplifier does not affect any of the other amplifiers.

Muting can be defeated per amplifier via an internal jumper labelled JP2 (located on the top board

behind inputs 1 and 2. The AMIS604 is shipped with muting enabled (jumper towards the front

panel of the amplifier). To disable VOX muting per amplifier, simply move the relevant jumper

(from amplifiers 1, 2, 3 or 4) so that it is closest to the back panel.

Optional ATC5489 Tone Generator/Vox Relay Card

An optional Tone Generator/Vox Relay card is available for the AMIS604. Each card controls one

amplifier within the unit so up to 4 cards can be installed. The card slots in between the input terminal strip

and the output terminal strip on the rear panel of the amplifier. Simply remove the two screws and blanking

plate, slide in the ATC5489 and replace the screws. The card provides a 4 tone generator module (Pre-

Announce, Bell, Alert and Evacuate tones) per amplifier and also provides a VOX triggered relay output

per amplifier. Full installation and operation instructions are included with the ATC5489.

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.

2. Read all documentation before operating your equipment. Retain all documentation for future

reference.

3. Follow all instructions printed on unit chassis for proper operation.

4. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid.

5. Make sure power outlets conform to the power requirements listed on the back of the unit.

6. Do not use the unit if the electrical power cord is frayed or broken. 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.

7. 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.

8. Mains voltage must be correct and the same as that printed on the rear of the unit. Damage caused

by connection to improper AC voltage is not covered by any warranty.

9. Have gain controls on amplifiers turned down during power-up to prevent speaker damage if there

are high signal levels at the inputs.

10. Power down & disconnect units from mains voltage before making connections.

11. Never hold a power switch in the “ON” position if it won’t stay there itself!

12. Do not use the unit near stoves, heat registers, radiators, or other heat producing devices.

13. Do not block fan intake or exhaust ports. Do not operate equipment on a surface or in an

environment which may impede the normal flow of air around the unit, such as a bed, rug, weathersheet,

carpet, or completely enclosed rack. If the unit is used in an extremely dusty or smoky environment, the

unit should be periodically “blown free” of foreign matter.

14. Do not remove the cover. Removing the cover will expose you to potentially dangerous voltages.

There are no user serviceable parts inside.

15. Do not drive the inputs with a signal level greater than that required to drive equipment to full

output.

16. 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.

17. 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. Do not ground any red (“hot”) terminal. Never connect a “hot” (red) output to ground or to

another “hot” (red) output!

19. Non-use periods. The power cord of equipment should be unplugged from the outlet when left unused

for a long period of time.

20. Service Information Equipment should be serviced by qualified service personnel when:

A. The power supply cord or the plug has been damaged.

B. Objects have fallen, or liquid has been spilled into the equipment

C. The equipment has been exposed to rain

D. The equipment does not appear to operate normally, or exhibits a marked change in performance

E. The equipment has been dropped, or the enclosure damaged.

Engineered in Sydney, Australia

www.australianmonitor.com

Australian Monitor Audio Inc.

PO Box 3126,

Lynnwood,

WA 98046.

Ph: 425 673 5175

Fax: 425 673 7825

E-mail: [email protected]

techsupport@australianmonitor.com

accounts@australianmonitor.com

International Sales & Corporate Head Office

Private Bag 149, Silverwater NSW 1811

149 Beaconsfield Street, Silverwater NSW 2128

Australia

Ph: 61-2- 9647 1411

Fax: 61-2-9748 2537

E-mail: [email protected]

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