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Table of Contents
Related Manuals for AMC MMA Series
Summary of Contents for AMC MMA Series
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Page 2: Table Of Contents
CONTENTS: Before you start Precautions Before you start Controls and connections Front panel Rear panel Installation Rack mounting Wire connectors Connections Adjusting amplifier Specifications Block diagram Technical data... -
Page 3: Precautions
Security Precautions ◎ Carefully READ instructions before use. ◎ Amplifiers can be operated on either 115 V or 230 V (50-60Hz), which can be selected by changing switch position on the rear panel. The amplifier is factory set to 230 VAC mains voltage. ◎... - Page 4 ■ AC Power Source. The supply transformer has been designed for use on either 115V or 230V, (50-60Hz), selected by a push switch on the rear panel. The amplifier is factory set to 230V mains voltage. When using the Amplifier When following irregular situations are found while using amplifier, immediately switch off the power, disconnect the power supply plug from the AC outlet.
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Page 5: Before You Start
Welcome Congratulations on purchasing MMA series multi-function commercial amplifier. New MMA series amplifiers are designed to provide a big impact in sound reproduction and to produce highest quality audio at an affordable price. We wish you great enjoyment and satisfaction when using your amplifiers, whether you are an installation, or reinforcement engineer. -
Page 6: Front Panel
Front panel description 1. Bay for adding optional music source (CD player 6. Pre-announce chime switch. with AM/FM Tuner, Compressed audio player). 2. Graphic equalizer controls 7. All speaker zone output selector. (125Hz/250Hz/500Hz/1kHz/2kHz/4kHz/8kHz). 3. Indicators (Protection/Output level/Power). 8. Individual speaker zone output selectors. -
Page 7: Installation
Installation CAUTION: Before beginning make sure the power cord is disconnected from mains source, set power switch to “OFF” position and turn all level controls counterclockwise. When using single mixer-amplifier application leave around 12 inch (about 30 cm) of air space around the unit for efficient convection cooling. -
Page 8: Wire Connectors
We recommend using pre-built or professionally wired balanced line, 22 to 24 gauge cables. Figure shows connector pin assignment for appropriate wiring application. RCA input connectors may also be used for unbalanced signal inputs. Balanced line Balanced line Unbalanced line Unbalanced line ¼”... - Page 9 Choosing right wire diameter and connectors For output connector we recommend using pre-built or professionally wired high quality and heavy gauge speaker wires. You may use Phoenix blocks for your output connectors. To prevent the possibility of short-circuits, wrap or insulate exposed loudspeaker cable connectors. Using the guidelines below, select the appropriate size wire based on the distance between amplifier and speaker.
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Page 10: Connections
Connections INPUTS: Connect microphones or balanced line-level sources to mixer-amplifier balanced input connectors. Set gain to desired level. Connect unbalanced line-level signals to RCA input connectors. OUTPUT: Maintain proper polarity on output connectors. Each output channel may be connected via Phoenix connectors. Ω... - Page 11 Possible speaker connection types are shown in a figure below. Ω CAUTION: Never use both the Low-Z(4 ) and Hi-Z (25V, 70V and 100V) terminals at the same time.
- Page 12 Typical input and output wiring diagram is shown in a figure below.
- Page 13 Expanding MMA series MMA series mixer-amplifier allows expansion using LINK IN and LINK OUT connectors. This function can be used for additional inputs and outputs and also affects amplifier to which signals are heard when another mixer or MMA series mixer-amplifier is wired.
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Page 14: Adjusting Amplifier
Preannounce chime MMA series mixer-amplifier supply user selectable 4 kinds of preannounce chime. The way of set up is same as follow figure. Above figure shows default factory setup. Pre-announce chime type could be changed by changing jumper position on a T3. - Page 15 This way public announcement could be made via PBX. Signal input gain control MMA series mixer-amplifier can accept variable and wide range input signals by input level control. Input level can be adjusted to -44dB letting to accept various external equipment.
- Page 16 Example application diagram is shown in a figure below...
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Page 17: Block Diagram
Block diagram... -
Page 18: Technical Data
Output Voltage 10Ω 5.2Ω 2.6Ω 83Ω 42Ω 21Ω Impedance 100V 165Ω 83Ω 42Ω Cooling Convection Cooled Construction Dimensions (Width/Height/Depth) 420(W) x 88(H) x 320(D) mm Net Weight 8.72 kg 9.76kg 10.70 kg AMC is a registered trademark of AMC Baltic www.amcpro.lt...
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