OWNER’S MANUAL DPA 4410 POWER AMPLIFIER Features • 4 x 100 W output capacity • off ground potential 100 V outputs (internally configurable to 70 V/50 V or 4 ohms) • all outputs are protected against floating (no load) and short-circuit • mains supply 115/230 V AC or battery operation 24 V DC • mains switch 115/230 V • REMOTE CONTROL start with STANDBY indicator (mains and battery operation) • service mains switch • GROUND-LIFT switch • active ventilated through a temperature-controlled DC
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 literature accompanying the appliance.
INDICATORS, CONTROLS AND CONNECTIONS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 LED meters CLIP indicator TEST button for checking and reset STANDBY indicator PROTECT indicator GROUND FAULT indicator READY indicator air inlets POWER on switch AC MAINS INPUT connector mains fuse VOLTAGE SELECTOR switch LEVEL 1- 4 input level controls INPUT 1- 4 XLR-type connectors INPUT 1- 4 routing switch REMOTE CONTROL connector POWER OUTPUT connector air outlets CIRCUIT TO CHASSIS switch DC INPUT 24 V= A rear p
TABLE OF CONTENTS FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 INDICATORS, CONTROLS AND CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 19 1. GENERAL NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2. INSTALLATION NOTES . . . . . . . . . . . . . . . . . . . . . . .
1. GENERAL NOTES The amplifier DPA 4410 has been specially designed to ensure durable performance and reliable operation of sound reinforcement systems with several independent speaker circuits. The DPA 4410 is best suited for call and message transmission installations, alert systems, and for general music applications in industrial enterprises, offices, multi-functional halls and sports arenas, schools, churches, hotels, hospitals, supermarkets, cruise ships, and other similar occasions. 2.
4. INPUTS 1 - 4 The inputs 1 - 4 (14) are electronically balanced. With a sensitivity of 775 mV = 0 dB, they are meant for the connection of common control pre-amplifiers. In case off ground potential inputs are needed, the amplifier inputs are prepared to be retrofitted with input transformers of the type NRS 90208 (per input).
5.2 POWER OUTPUT with 100 V speaker systems The use of speaker systems with a 100 V matching transformer is recommended to reduce the lack in performance when the distance between amplifier and speaker systems exceeds 50 m. This method also offers an easy way of output power distribution. The total power consumption of the maximum amount of the connected speaker network has to match the amplifier’s overall output capacity of 100 W (with an impedance of 100 ohms).
5.4 POWER OUTPUT 100 V with double output capacity If the output power of one output is not sufficient to feed all cabinets that are incorporated within a speaker network and it is not possible to divide the speaker chain, doubling the output power can be achieved by coupling the outputs of two DPA 4410. In that case the amplifier inputs are paralleled and the outputs are connected in series (see also diagram 5).
1 +24V = Standby 2 ⊥ Standby ground 3 power remote 4 battery remote 5 ⊥ monitor ground 6 monitor 3 9 ⊥ monitor ground 10 monitor 1 11 12 13 14 7 8 15 ⊥ monitor ground monitor 2 ⊥ monitor ground monitor 4 ready Diagram 6 Pin-assignment of the REMOTE CONTROL D-Sub connector 6. METERING The green LED indicator (1) permits the continuous monitoring of the output level, providing the possibility to prevent the speaker systems from overload situations and damaging.
20 V 50 V 100 V 70 V Diagram 7 Changing the output transformer’s 354030 output voltage 9. ADDITIONAL FUNCTIONS AND FEATURES 9.1 NRS 90206 pilot tone surveillance Using the extension kit NRS 90206, the amplifier channels are automatically and continuously monitored. This is achieved by sending an ultra low-level 19 kHz pilot tone through the device. It enters the signal path after the LEVEL controls, runs through the amplification stages and gets filtered out and evaluated at the output.
Checking the functioning: With built-in NRS 90206 and operational amplifier, the READY indicators (7) have to be lit. Use the TEST button (3) to check and reset the pilot function. When keeping the TEST button pressed, the 19 kHz oscillator is switched off, the READY indicators go out, and the READY fault relay is being reset. After approximately 3 seconds, when the TEST button is released, the READY indicators will light again. 9.
T101 INPUT 1 T104 INPUT 4 T102 INPUT 2 T103 INPUT 3 TO AMP_A PCB 84167 Diagram 9 10. TO REMOTE CONTROL PCB 81330.2 TO AMP_B PCB 84167 Printed circuit board 81330.1 with inserted input transformers NRS90208 INCORPORATION INTO 19" FLIGHTCASES OR 19" RACK SYSTEMS Note Do not operate the DPA 4410 without its enclosure or without parts of the enclosure. When incorporating the DPA 4410 into a 19" flightcase or 19" rack system make sure, that there is sufficient air-flow.
F 503 25 A F 502 25 A F 504 T6.3A F 505 T6.3A F 506 T6.3A F 507 T6.3A Diagram 10 printed circuit board 85264.2 with inserted DC fuses F502 and F507 Changing the fuses F502 and F503: The battery fuses F 502 and F503 are located on the printed circuit board 85264.2, behind the AMP battery connections. In case they need to be exchanged, the top cover plate (see also paragraph 8) and the rear cover plate of the appliance have to be detached.
12. SPECIFICATIONS OF THE DPA 4410 Mains supply: Voltage: Frequency: Protection class: 115 V / 230 V~ AC, ±10 50 - 60 I mains supply Umains [V] Imains [A] Pmains [VA] Pmains [W] Pout [W] Pv [W] floating normal operation (-10 dB) alert (-3 dB) normal operation 230 230 230 230 0.27 1.64 3.25 4.
Monitor output characteristics: Nominal output voltage Nominal load impedance Overall frequency response unbalanced 2 V = +8.2 dBu 600 ohms 60 Hz … 20 kHz Environmental temperature +5° C … +40° C Technical regulations: This appliance is in accordance with the following regulations: EN 50081-1, EN 50082-1, EN 60065 Dimensions (W x H x D) installation depth without external connectors installation depth with external connectors Weight Colour 19" (483 mm) x 3 HU (132 mm) x 345 mm 340 mm max. 400 mm 22.