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POWER AMPLIFIER DPA 4411
Features
Power amplifier with 4x100 W output power capacity according to IEC 283-3
19" - rack size (3 HU) unit that provides the following functions:
Mains operation 115/230 V AC and operation with emergency power supply of 24 V DC
Output transformers for balanced, floating 100 V loudspeaker networks: 70 V, 50 V or
4 ohms for low-impedance operation can be selected
All outputs are protected against idling and short-circuit
Integrated Remote Module for control and monitoring using the PROMATRIX Manager DPM 4000
Electronic level controls, electronically balanced inputs and electronically balanced MONITOR output
Input transformer for balanced, floating inputs can be retrofitted
Monitor output transformer for balanced, floating MONITOR output can be retrofitted
Routing switch for parallel operation of the amplifier's inputs
Integrated Standby Power Supply
Mains function switch - POWER
Ground lift switch
Remote-Start function for mains and battery operation with inrush current limiter protection
Power-on noise attenuation
Status-LED indicators: operation (READY), STANDBY, thermal overload (PROTECT)
and GROUND FAULT at the power outputs
Fault notification according to DIN EN 60849 via the PROMATRIX Manager DPM 4000
TEST-switch for systems with average-switching or GROUND FAULT RESET
LED meters with a range from -13 dB to 0 dB plus CLIP indication
Mains voltage selector switch 115/230 V AC
Active, temperature-controlled ventilation
Modules for pilot tone surveillance and ground fault surveillance according to DIN VDE 0800 are
optionally available
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OWNER'S MANUAL
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Summary of Contents for Dynacord DPA 4411
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Page 1: Features
OWNER’S MANUAL POWER AMPLIFIER DPA 4411 Features Power amplifier with 4x100 W output power capacity according to IEC 283-3 19" - rack size (3 HU) unit that provides the following functions: Mains operation 115/230 V AC and operation with emergency power supply of 24 V DC... -
Page 2: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the... -
Page 3: Indicators, Controls And Connectors
Indicators, Controls And Connections LED meters with a range from -13 dB to 0 dB CLIP indicators TEST button for checking and reset function STANDBY indicator PROTECT indicator GROUND FAULT indicator READY indicator Air inlets POWER ON switch AC MAINS INPUT connector Mains fuse VOLTAGE SELECTOR switch REMOTE CONTROL connectors... -
Page 4: Table Of Contents
13. DPA 4411 Specifications ..........35 14. Specifications For DPA 4411 Accessories ....... 36 14.1 NRS 90206 Pilot Tone Surveillance . -
Page 5: Utilization
(4) provides no function. The DPA 4411 is equipped with a cut-in delay of approximately 3 seconds to efficiently suppress power-on noise. After this period of time and when no fault was detected, the green READY indicators (7) will light... -
Page 6: Battery Operation 24 V Dc
3.2 Battery Operation 24 V DC The amplifier DPA 4411 can either be operated on the AC mains or connected to an external 24 V battery power source. Switching to battery operation is accomplished via internal relay. The battery has to be connected to the corresponding socket (23) on the rear panel of the appliance using insulated AMP flat connectors 6.3x0.8 mm. -
Page 7: Outputs
5. Outputs 5.1 POWER OUTPUT All power outputs are balanced and floating. When factory-shipped, the outputs are pre-configured for the connection of 100 V loudspeaker systems. Connection is achieved through plugging the supplied 8-pole socket into the connection strip (19). Switching the output transformer allows to change the output voltage to 70 V, 50 V or 20 V (see paragraph 8). -
Page 8: Power Output 100 V - Double Output Power
5.4 POWER OUTPUT 100 V - Double Output Power If the output power of one output of the DPA 4411 is not sufficient to feed all cabinets within a speaker network and dividing the speaker chain is not an option, it is possible to double the output power by coupling the outputs of two amplifiers. -
Page 9: Indicators And Fault Notification
Note Prior to the first operation of the amplifier DPA 4411, you have to set the amplifier address using the two Hexadecimal Code switches ADDRESS (18) (refer to the PROMATRIX handbook) and using a waterproof marker pen mark the setting in the ADDRESS label field on the rear panel of the appliance. -
Page 10: Ground Fault Indicator
8. Switching The Output Voltage (refer to qualified service personnel only!) The DPA 4411 offers output voltages of either 20 V, 50 V, 70 V or 100 V. The output voltage i s factory-preset to 100 V. Switching the output voltage to 20 V, 50 V or 70 V should only be carried out by qualified DYNACORD service personnel. -
Page 11: Additional Functions And Features (Refer To Qualified Service Personnel Only!)
Note After changing the output voltage, use a waterproof marker pen to note the correct, newly set value on the label-field OUTPUT VOLTAGE (20) on the rear of the appliance. Additionally note the corresponding output configuration (see diagram 5) on the label OUT CONFIG TYPE (20). -
Page 12: Nrs 90207 Ground Fault Surveillance
diagram 9 Printed board assembly 89019.1 showing the position of the modules NRS 90206 and NRS 90207 9.1.2 Checking The Function Of The NRS 90206: With built-in NRS 90206 and powered-on amplifier, the READY-indicators (7) have to light. Use the check and reset-button TEST (3) to check the functioning of the pilot tone surveillance. -
Page 13: Nrs 90208 Input Transformer
TEST-button (3) to reset the ground fault surveillance function. 9.3 NRS 90208 Input Transformer For Floating, Balanced Inputs In case floating inputs are needed, the inputs of the DPA 4411 are prepared for retrofitting input transformers; a separate NRS 90208 extension-kit is needed per input. -
Page 14: Nrs 90227 Monitor Output Transformer
Operating the DPA 4411 without cover-plate is not admissible. When incorporating the DPA 4411 into a 19" flightcase or 19" rack system, make sure to leave room for sufficient air-flow. Between the amplifier’s rear plate and the inside-wall of the surrounding enclosure has to be at least 60 mm x 330 mm of space until up to the enclosures top or its ventilation gaps. -
Page 15: Ground Lift Switch Circuit
11. Ground Lift Switch CIRCUIT TO CHASSIS SWITCH Using the ground lift switch CIRCUIT TO CHASSIS SWITCH (22) lets you separate the audio signal ground from the enclosure ground (safety earthing). This helps to solve problems with hum or noise without jeopardizing safety standards. - Page 16 Caution For safety reasons make sure that after reassembling, wires running underneath the mains-input printed board assembly 86243 are run with a minimum distance of at least 6 mm. diagram 11 Printed board assembly 85272 showing the position of the DC-fuses F502 to F507...
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Page 17: Dpa 4411 Specifications
13. DPA 4411 Specifications Power supply on mains operation: operation voltage 115 V / 230 V~ AC, ±10 % mains frequency range 50 - 60 Hz safety class mains operation [VA] mains mains mains mains Standby 0,016 0idling 0,29 Normal operation (-10 dB) -
Page 18: Specifications For Dpa 4411 Accessories
400 mm weight 22.5 kg color anthracite Extension kits for the DPA 4411: NRS 90206 pilot tone surveillance (for four amplifiers) Order No. 121 639 NRS 90207 ground fault surveillance (for four outputs) Order No. 121 640 NRS 90208 input transformer (per single input) Order No.