Dynacord 4410 User Manual

DPA 4410 POWER AMPLIFIER

OWNER’S MANUAL

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 ventilator

• electronically balanced inputs

• routing switch for parallel operation of the amplifier inputs

• input level control

• power-on noise suppression

• 3 LED indicators with CLIPPING indicator for metering purposes

• MONITOR outputs

• temperature control with PROTECT indicator

• fault indicators: READY and GROUND FAULT

• fault message via off potential READY contact

• TEST switch for pilot tone surveillance and GROUND FAULT reset

• off ground potential, balanced input transformer are optionally available

• pilot tone surveillance module and ground fault surveillance module are optionally available

• 19" rack dimensions with 3 HU

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.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a damp cloth.

7. Do not block any of the ventilation openings. Install in accordance with the manufactures instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9. Only use attachments/accessoris specified by the manufacturer.

10. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

For US and CANADA only:

Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrican for replacement of the absolete outlet.

IMPORTANT SERVICE INSTRUCTIONS

1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance.

2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains

3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.

4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times.

5. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only permissible when using original parts.

6. Altering the circuitry without prior consent or advice is not legitimate.

7. Any work security regulations that are applicable at the location where the appliance is being serviced have to be strictly obeyed. This applies also to any regulations about the work place itself.

8. All instructions concerning the handling of MOS - circuits have to be observed.

Note:

SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIGINAL PART ONLY)

INDICATORS, CONTROLS AND CONNECTIONS

1 LED meters 2 CLIP indicator 3 TEST button for checking and reset

4 STANDBY indicator

5 PROTECT indicator 6 GROUND FAULT indicator 7 READY indicator

8 air inlets 9 POWER on switch

10 AC MAINS INPUT connector

11 mains fuse 12 VOLTAGE SELECTOR switch

13 LEVEL 1- 4 input level controls

14 INPUT 1- 4 XLR-type connectors

15 INPUT 1- 4 routing switch 16 REMOTE CONTROL connector

17 POWER OUTPUT connector

18 air outlets 19 CIRCUIT TO CHASSIS switch

20 DC INPUT 24 V=

A rear plate screws (see also paragraph 11)

TABLE OF CONTENTS

FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

INDICATORS, CONTROLS AND CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 19

1. GENERAL NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2. INSTALLATION NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3. PRECAUTIONS AND RECOMMENDATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4. INPUTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5. OUTPUTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1 POWER OUTPUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.2 POWER OUTPUT with 100 V speaker systems . . . . . . . . . . . . . . . . . . . . . . . 23

5.3 POWER OUTPUT with low impedance speaker systems . . . . . . . . . . . . . . . . 23

5.4 POWER OUTPUT 100 V with double output capacity . . . . . . . . . . . . . . . . . . . 24

5.5 MONITOR output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.6 REMOTE CONTROL connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6. METERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7. 24 V DC OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8. SETTING THE OUTPUT VOLTAGE (only by qualified service personal). . . . . . . . 25

9. ADDITIONAL FUNCTIONS AND FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

9.1 NRS 90206 pilot tone surveillance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

9.2 NRS 90207 ground fault surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

9.3 NRS 90208 input transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

10. INCORPORATION INTO 19" FLIGHTCASES OR 19" RACK SYSTEMS . . . . . . . 28

11. FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

12. SPECIFICATIONS OF THE DPA 4410. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

13. SPECIFICATIONS OF THE OPTIONAL ACCESSORIES . . . . . . . . . . . . . . . . . . . 31

13.1 NRS 90206 pilot tone surveillance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

13.2 NRS 90207 ground fault surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

13.3 NRS 90208 input transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

14. BLOCK DIAGRAM OF THE DPA 4410. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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. INSTALLATION NOTES

When placing or mounting the amplifier, it is important that the air-flow can pass unhindered through the air inlets on the front and the air outlets on the rear of the appliance (see also paragraph 10).

The amplifier has to be protected from:

- dropping or splashing water

- direct sunlight

- high environmental temperatures or direct radiation of heat sources

- moisture

- dust

- shock or vibration When moving the amplifier from a cold into a warm environment, condensation of its inner parts can

sometimes occur. If so, the appliance can be operated again after gaining the environmental temperature (approximately after one hour).

If a solid object has fallen or liquid has leaked into the device, disconnect all connections and get in contact with an authorized DYNACORD service center. Do not operate the amplifier after such accidents.

When cleaning the amplifier’s outside enclosure, never use any cleaning sprays or detergents, because of inflamability. The use of those liquids will damage the appliance.

3. PRECAUTIONS AND RECOMMENDATIONS

When the appliance is operated with the mains supply, use the included mains cable to connect the amplifier to a 230 V or 115 V 50/60 Hz wall outlet. Connect the cable’s other end to the appliance’s 3-pole machine-type socket (10).

Warning The amplifier is factory-set to 230 V AC. To change this setting use the voltage switch

(12). For the operation with 115 V AC, the mains fuse (11) has to be exchanged by an

8 A slow-blow fuse with the label print “T8A” (see also paragraph 11).

When using the amplifier with a remote-start device, an external 24 V DC source has to be connected to the REMOTE CONTROL connector (16) (see also paragraph 5.6). If the connection was performed right and 24 V DC voltage is present, the STANDBY indicator (4) will light.

The POWER switch (9) on the rear of the amplifier for bridging the starting relay is meant only for service purposes. In that case the amplifier can be operated without the external 24 V DC supply.

Note The POWER switch (9) on the rear of the amplifier is meant only for service purposes. If this switch is engaged, the remote power-off function of the appliance is not operational and the STANDBY indicator provides no indication.

The DPA 4410 is equipped with a cut-in delay of approximately 3 seconds to efficiently suppress power-on noise.

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