Related Manuals for EM Acoustics AD-9
Summary of Contents for EM Acoustics AD-9
- Page 1 AD-9 amplifier User Manual v1.0 EM Acoustics Loudspeakers Building 74 Dunsfold Park Cranleigh Surrey GU6 8TB www.emacoustics.co.uk...
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Page 2: Ad-9 Operating Instructions Page
AD-9 Operating Instructions Page 2... -
Page 3: Table Of Contents
AD-9 Operating Instructions Page 3 CONTENTS DECLARATION OF CONFORMITY THANKS INTRODUCTION IMPORTANT SAFETY INSTRUCTIONS INSTRUCTIONS DE SECURITE IMPORTANTES Installing Your Amplifier: Electrical Considerations Installing Your Amplifier: Mechanical Considerations Installing Your Amplifier: RF Emissions About Your Amplifier: Dynamic Amplifier Performance Measurements... -
Page 4: Declaration Of Conformity
AD-9 Operating Instructions Page 4 DECLARATION OF CONFORMITY We, the manufacturer: Audio, Units 6-8 Kingsgate Heathpark Industrial Estate Honiton, Devon England EX14 1YG acknowledge our responsibility that the following products: Kind of equipment: Audio amplifier Commodity Code: 8518408990 Type Designation:... -
Page 5: Thanks
INTRODUCTION The AD-9 is the most powerful two channel amplifier within the EM Acoustics range. It has been designed to meet demands for higher power and increased efficiency, whilst still maintaining the renowned sonic qualities and unsurpassed reliability associated with our loudspeaker products. -
Page 6: Important Safety Instructions
AD-9 Operating Instructions Page 6 IMPORTANT SAFETY INSTRUCTIONS CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN The lightning flash with arrowhead The exclamation point within an symbol within an equilateral triangle is equilateral triangle is intended to alert intended to alert the user to the presence the user of important operating and of uninsulated “dangerous voltage”... -
Page 7: Instructions De Securite Importantes
AD-9 Operating Instructions Page 7 INSTRUCTIONS DE SECURITE IMPORTANTES ATTENTION: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR Le symbole représentant un éclair fléché Le point d’exclamation dans un triangle dans un triangle équilatéral a pour but équilatéral a pour but d’alerter d’alerter l’utilisateur de la présence d’une... -
Page 8: Installing Your Amplifier: Electrical Considerations
AD-9 Operating Instructions Page 8 Installing Your Amplifier: Electrical Considerations The amplifier has been manufactured to comply with your local power supply requirements, but before connecting the unit to the supply, ensure that the voltage (printed on the rear panel) is correct. -
Page 9: Installing Your Amplifier: Mechanical Considerations
Please also see the notes regarding maintenance on page 17. Installing Your Amplifier: RF Emissions The high frequency resonant converters in the AD-9 have been designed to have very low radio frequency (RF) emissions; however even these low level emissions can cause interference with other equipment. -
Page 10: About Your Amplifier: Dynamic Amplifier Performance Measurements
About Your Amplifier: Dynamic Amplifier Performance Measurements The AD-9 is the very latest example of a ‘dynamic amplifier’. This new ‘breed’ of power amplifiers provide very high peak power levels in a much smaller, and lighter, package than previously possible with conventional amplifiers. -
Page 11: Connecting To Your Amplifier: Inputs
AD-9 Operating Instructions Page 11 Connecting To Your Amplifier: Inputs The inputs are made via 3-pin XLR connectors, which are electronically balanced and should be connected via a high grade twin core screened cable, as follows: PIN1: Screen (see note) -
Page 12: Connecting To Your Amplifier: Speaker Outputs
Connections for Bridge Mono Operation The AD-9 is capable of being bridged, however when doing so the output power and RMS voltages produced are potentially fatal. As such, please contact EM Acoustics should you... -
Page 13: Operating Your Amplifier: Front Panel Controls And Indicators
AD-9 Operating Instructions Page 13 Operating Your Amplifier: Front Panel Controls and Indicators 1: Power Switch: This single pole switch turns the amplifier fully off (but does NOT isolate it from the mains supply). 2: Power LED: This indicates when the amplifier is active. This does NOT indicate the presence of a mains supply when the power switch is OFF. -
Page 14: Operating Your Amplifier: Notes And Switching On
AD-9 Operating Instructions Page 14 Typical conditions that could cause the protection to be triggered include very high frequency or subsonic input signals, DC in the inputs, short-circuited outputs, or internal high temperatures. Temperature related faults will reset if the unit has cooled sufficiently. -
Page 15: Operating Your Amplifier: Rear Panel Sockets And Switches
As the currents involved are very high, and to ensure best performance, the speaker cables should be kept as short as possible and conform to the following minimum requirements: AD-9: 25A into 4 Ohm speaker loads Link switch: Press this switch to link the input of the channel to its immediate left. - Page 16 AD-9 Operating Instructions Page 16 Input XLR sockets: Connect signal inputs to these sockets, wired pin 2 hot, 3 cold, 1 ground. For sensitivity and impedance of these inputs, please see the specifications on page 19. Fan outlet: The variable speed fans suck air in through the front vents and out through the back of the amplifier.
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Page 17: Looking After Your Amplifier: Maintenance
AD-9 Operating Instructions Page 17 Looking After Your Amplifier: Maintenance These maintenance instructions are for use by qualified personnel only. Before any routine maintenance, please ensure that your amplifier is disconnected from the mains supply! The filter behind the air intake apertures on the front of your amplifier should be cleaned or replaced periodically, e.g. -
Page 18: Changing The Gain Of Your Amplifier: Internal Adjustments
The gain should be set to match the signal from the source, e.g. mixer, controller, equaliser etc. Power Requirements The AD-9 can be supplied for nominal mains voltages of 115V or 230V. This amplifier will only operate to its very high specification if it is installed and operated as described in this manual. -
Page 19: Performance Of Your Amplifier: Specifications
AD-9 Operating Instructions Page 19 Performance Of Your Amplifier: Specifications Main Specifications Parameter (Units) AD-9 Output Power per channel [Crest Factor = 4.8] (Watts) 8 Ohms 2500 4 Ohms 4800 2 Ohms 8200 Output Power per channel bridged [Crest Factor = 4.8] (Watts) - Page 20 AD-9 Operating Instructions Page 20 Performance Of Your Amplifier: Specifications PRC Settings and Maximum Output Power Reduction Control Setting Per Channel Bridged Pair Maximum Power into 8 ohms (W) 2150 8600 -2dB PRC 1200 4800 -4dB PRC 3600 -6dB PRC...