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Summary of Contents for XTA DNA20
- Page 2 Page 2 DNA Series — DNA20 Operating Instructions...
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Page 3: Table Of Contents
DNA Series — DNA20 Operating Instructions Page 3 CONTENTS DECLARATION OF CONFORMITY ................4 THANKS ........................5 INTRODUCTION ....................... 5 IMPORTANT SAFETY INSTRUCTIONS ..............6 INSTRUCTIONS DE SECURITE IMPORTANTES ............7 Installing Your Amplifier: Unpacking ..............8 Additional Symbols and Warnings ....................8 Installing Your Amplifier: Electrical Considerations .......... -
Page 4: Declaration Of Conformity
Page 4 DNA Series — DNA20 Operating Instructions DECLARATION OF CONFORMITY We, the manufacturer: XTA Electronics Limited, The Design House Vale Business Park Worcester Road Stourport on Severn Worcestershire England DY13 9BZ acknowledge our responsibility that the following products: Kind of equipment:... -
Page 5: Thanks
Exemplary audio processing is assured through the use of XTA’s DSP platform in the DSP enabled models (DPA Series), and power amplifier capabilities are taken care of with high efficiency output stages and a generous power supply. -
Page 6: Important Safety Instructions
Page 6 DNA Series — DNA20 Operating Instructions IMPORTANT SAFETY INSTRUCTIONS CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN The lightning flash with arrowhead The exclamation mark within an symbol within an equilateral triangle equilateral triangle is intended to is intended to alert the user to the alert the user of important operating presence 0f uninsulated “dangerous... -
Page 7: Instructions De Securite Importantes
DNA Series — DNA20 Operating Instructions Page 7 INSTRUCTIONS DE SECURITE IMPORTANTES ATTENTION: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR Le symbole repr sentant un éclair fl é é é Le point d’exclamation dans un triangle dans un triangle quilat ral a pour but é... -
Page 8: Installing Your Amplifier: Unpacking
Page 8 DNA Series — DNA20 Operating Instructions Installing Your Amplifier: Unpacking After unpacking the unit, please check it carefully for any damage. If any is found, immediately notify the carrier concerned - you, the consignee, must instigate any claim. Please retain all packaging in case of future re-shipment. -
Page 9: Installing Your Amplifier: Electrical Considerations
DNA Series — DNA20 Operating Instructions Page 9 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 10: Installing Your Amplifier: Mechanical Considerations
Page 10 DNA Series — DNA20 Operating Instructions Installing Your Amplifier: Mechanical Considerations To ensure that this equipment performs to specification, it should be mounted in a suitable rack or enclosure as described below. Like all high power amplifiers, it should be kept away from other equipment which is sensitive to magnetic fields. -
Page 11: About Your Amplifier: Dynamic Amplifier Performance Measurements
DNA Series — DNA20 Operating Instructions Page 11 About Your Amplifier: Dynamic Amplifier Performance Measurements The DNA Series are 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 12: Connecting To Your Amplifier: Line Inputs And Outputs
Page 12 DNA Series — DNA20 Operating Instructions Connecting To Your Amplifier: Line Inputs and Outputs 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:... -
Page 13: Connecting To Your Amplifier: Speaker Outputs
As the currents involved are relatively high, and to ensure best performance, the speaker cables should be kept as short as possible and conform to the following minimum requirements: DNA20, 6A into 4 Ohm speaker loads When operating the amplifier into loads of less than 4 Ohms, be aware that the current capacity of the speaker cables will need to be increased above the values quoted here. -
Page 14: Connecting To Your Amplifier: Bridged (Mono) Operation
Page 14 DNA Series — DNA20 Operating Instructions Connecting To Your Amplifier: Bridged (Mono) Operation Pairs of channels may be independently bridged — channel pair 1+2, and/or channel pair 3+4. The method is the same for both channel pairs: Select the required bridged mode using the rear panel switches (see page 16 for more information). -
Page 15: Operating Your Amplifier: Front Panel Controls And Indicators
DNA Series — DNA20 Operating Instructions Page 15 Operating Your Amplifier: Front Panel Controls and Indicators LINK LINK LINK DNA 20 PROTECTION DIGITAL NETWORK POWER BRIDGE 1+2 AUDIO AMPLIFER ANALOGUE BRIDGE 3+4 NET. AUDIO STANDBY 1: NET. AUDIO LED: This will illuminate when the selected source is the network audio connection. -
Page 16: Operating Your Amplifier: Rear Panel Sockets And Switches
90V-240V AC 50-60Hz (see manual for details of operation) DESIGNED AND MANUFACTURED IN ENGLAND by XTA Electronics Ltd. and MC Audio 1: Mains input: IEC 3 pin (may not be switched on some versions — fuse is then internal) 2: Channel output Speakon socket: Output 1 is on pins 1+ hot, 1- cold. Channel 2’s output is also wired to this socket to enable a single NL4 to provide both channels and to facilitate easier wiring in bridged mode. -
Page 17: Operating Your Amplifier: Initial Set-Up And Switching On
DNA Series — DNA20 Operating Instructions Page 17 Operating Your Amplifier: Initial Set-up and Switching On Please read all documentation before operating your amplifier and retain all documentation for future reference. Do not spill water or other liquids into or on the unit and do not operate your amplifier while standing in liquid. -
Page 18: Operating Your Amplifier: Switching Between Analogue & Networked Audio
Page 18 DNA Series — DNA20 Operating Instructions Operating Your Amplifier: Switching between analogue & networked audio Your amplifier may be fitted with a Dante network audio card, which includes 24-bit 96kHz high performance digital to analogue converters, allowing the amplifier to use four channels chosen from a Dante network. -
Page 19: Operating Your Amplifier: General Purpose Connections (Gpio) Port
Page 19 Operating Your Amplifier: General Purpose Connections (GPIO) Port The 6-way mini-Phoenix connector on the rear panel of the DNA20 allows the amplifier to report back to building management systems on its operating state and permits the amplifier to be remotely switched in and out of standby. -
Page 20: Internal Adjustments To Your Amplifier: Fixed Fan Speed
Page 20 DNA Series — DNA20 Operating Instructions Internal Adjustments to Your Amplifier: Fixed fan speed These instructions are for use by qualified personnel only. Before any routine maintenance, please ensure that your amplifier is disconnected from the mains supply! In noise sensitive environments, the auto-fan speed adjustment may be disabled. - Page 21 The DNA20 will switch itself into standby after 10 seconds of no signal (less than -60dBu) on its inputs. This feature is enabled by default and depends on the selected source — if analogue is selected, this will be the source that can “wake”...
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Page 22: Internal Adjustments To Your Amplifier: Changing The Gain
Page 22 DNA Series — DNA20 Operating Instructions Internal Adjustments To Your Amplifier: Changing the Gain These instructions are for use by qualified personnel only. Before any routine maintenance, please ensure that your amplifier is disconnected from the mains supply! Gain/Sensitivity Settings Adjustment is by internal solder link as shown below —... -
Page 23: Looking After Your Amplifier: Maintenance
DNA Series — DNA20 Operating Instructions Page 23 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 24: Performance Of Your Amplifier: Specifications
Page 24 DNA Series — DNA20 Operating Instructions Performance Of Your Amplifier: Specifications Main Specifications Parameter (Units) DNA20 Output Power one channel [continuous music CF 4.8] (Watts) 2 Ohms 2.7 Ohms 4 Ohms 8 Ohms 50 Ohms [70/100V line TX] Output Power all channels [continuous music CF 4.8] (Watts) -
Page 25: Performance Of Your Amplifier: Thermal Specifications
DNA Series — DNA20 Operating Instructions Page 25 Performance Of Your Amplifier: Thermal Specifications Power Consumption and Thermal Emissions — DNA20 Mains Load Current Draw Thermal Emissions No Sig’l Light Average Heavy No Sig’l Light Average Heavy 0.12 0.26 0.40 0.75... -
Page 26: Appendix I: Speaker Backup Inputs
Failure could include loss of power, over-temperature protection or accidental remote enabling of standby. To use this feature, the backup amplifier must also be an MC Delta 20, or an XTA DNA20. Do NOT attempt to use another manufacturer’s amplifier or any Delta/DNA/DPA amplifier that is not fitted with this feature. -
Page 27: Appendix Ii: 70/100V Line Output Operation
DNA Series — DNA20 Operating Instructions Page 27 Appendix II: 70/100V line output operation Your amplifier may be fitted with voltage step-up transformers enabling operation at higher impedances for use with 70V or 100V line distributed speaker systems. This option is factory fit only, and may be fitted to individual channels. -
Page 28: Appendix Iii: 70/100V Line Distributed Audio Systems
Page 28 DNA Series — DNA20 Operating Instructions Appendix III: 70/100V line distributed audio systems Introduction Distributed audio, particularly for speech applications, will often require many speakers to be positioned around a venue, to provide even coverage at acceptable levels in all locations. These speakers may be spread over a considerable area and involve long cable runs to achieve this. -
Page 29: Example: How Many Speakers Can I Connect To An Amp Channel
DNA Series — DNA20 Operating Instructions Page 29 AMPLIFIER OUTPUT VOLTAGE HIGH VOLTAGE STEPPED STEPPED UP WITH TRANSFORMER DOWN AGAIN TO DRIVE SPEAKER VIA LOCAL TRANSFORMER HIGH V LOW I LONG SMALL GAUGE CABLE... LOW V LOW V HIGH I HIGH I Once the voltage has been “stepped up”... -
Page 30: Getting The Best Performance
Page 30 DNA Series — DNA20 Operating Instructions Let’s say we have worked out that we need 10 of the 15W speakers, for starters — that comes to 10 x 15W = 150W, leaving us with 50W “spare”, which means we could connect another 10 of the the 5W speakers. - Page 31 DP4 and 5 Series. The minimum response requirement is -3dB @ 70Hz and 12dB/Octave roll off below this. All ranges of MC amplifiers can be fitted with these cards, as can the DNA20 — please contact us for more information. Note that the DNA20 has a built-in HPF (100Hz HPF with a roll-off of 24dB/Octave Butterworth) which is enabled as part of the procedure when the step-up transformers are fitted —...
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Page 32: In Conclusion
Page 32 DNA Series — DNA20 Operating Instructions In Conclusion… Working with distributed audio using the 100V line system need not be a complex undertaking — just remember these key points: - If in doubt about how much power you need, go for your upper estimate — an underpowered...
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