Dynacord 4411 User Manual

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OWNER’S MANUAL

POWER AMPLIFIER DPA 4411

Features

Power amplifier with 4x100 W output power capacity according to IEC 283-319" - 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-impedanceoperation 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-Startfunction for mains and battery operation with inrush current limiter protection

Power-onnoise attenuation

Status-LEDindicators: 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-switchfor systems withaverage-switchingor GROUND FAULT RESET

LED meters with a range from -13dB to 0 dB plus CLIP indication

Mains voltage selector switch 115/230 V AC

Active, temperature-controlledventilation

Modules for pilot tone surveillance and ground fault surveillance according to DIN VDE 0800 are optionally available

19

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/accessories 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-supplycord 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-typeplug. 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

CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

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)

20

Indicators, Controls And Connections

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

LED meters with a range from -13dB to 0 dB

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

CLIP indicators

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

TEST button for checking and reset function

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

REMOTE CONTROL connectors

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

STATUS indicator

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

INPUT connectors 1-4

 

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

ROUTING switch for INPUT 1-4

 

 

 

 

 

 

 

 

 

 

17

 

 

 

 

 

 

Device address label field

 

 

 

 

 

 

 

 

 

 

18

 

 

 

 

 

 

ADDRESS selector switch

 

 

 

 

 

 

 

 

 

 

19

 

 

 

 

 

 

POWER OUTPUT

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

Device output configuration label field

 

 

 

 

 

 

 

 

 

 

21

 

 

 

 

 

 

Air outlets

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22 CIRCUIT TO CHASSIS SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23 DC INPUT 24 V =

 

 

 

 

 

 

 

 

A

Rear plate screws:

 

 

 

 

 

6 oval-headsheet-metalscrews 3.5 x 6.5zinc-coatedDIN 7981

 

 

 

 

 

 

 

 

B heat-sink-mounting:

 

 

 

 

 

4 oval-headsheet-metalscrews 3.5 x 9.5zinc-coatedDIN 7981

 

 

 

 

 

 

 

 

C

PCB-mounting:

 

 

 

 

 

9 oval-headscrews M3 x 12nickel-platedDIN 7985

 

 

 

 

 

 

 

 

D

socket-mounting:

 

 

 

 

 

8 oval-headscrewsPT-KA30 x 8WN-1412EJOTblack,zinc-coated

 

 

 

 

 

 

 

21

 

 

Table of Contents

 

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

Indicators, Controls And Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

1. Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

2. Installation Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

3. Before Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

3.1

 

Mains Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

3.2

 

Battery Operation 24 V DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

4. Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

5. Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

5.1

 

POWER OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

5.2

 

POWER OUTPUT for the connection of 100 V loudspeaker systems . . . . . .

25

5.3

 

POWER OUTPUT for the connection of low-impedanceloudspeaker systems 25

5.4

 

POWER OUTPUT 100 V - Double Output Power . . . . . . . . . . . . . . . . . . . . . .

26

5.5

 

MONITOR Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

6. Integrated Remote Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

7. Indicators And Fault Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

7.1

STANDBY Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

7.2

 

READY Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

7.3

 

PROTECT Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

7.4

 

GROUND FAULT Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

7.5

 

Meter Instruments And CLIP Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

7.6

 

STATUS Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

8. Switching The Output Voltage (refer to qualified service personnel only!) . . . . . . .

28

9. Additional Functions And Features (refer to qualified service personnel only!) . .

29

9.1

 

NRS 90206 Pilot Tone Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29

9.2

 

NRS 90207 Ground Fault Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30

9.3

 

NRS 90208 Input Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

9.4

NRS 90227 Monitor Output Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

10. 19"-FlightcaseOr19"-RackSystem Installation . . . . . . . . . . . . . . . . . . . . . . . . . .

32

11. Ground Lift Switch CIRCUIT TO CHASSIS SWITCH . . . . . . . . . . . . . . . . . . . .

33

12. Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33

13. DPA 4411 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35

14. Specifications For DPA 4411 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

14.1

NRS 90206 Pilot Tone Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

14.2

NRS 90207 Ground Fault Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

14.3

NRS 90208 Input Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

14.4 NRS 90227 Monitor Output Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

15. Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

55

15.1

DPA 4411 Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

55

15.2

NRS 90206 Pilot Tone Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

56

15.3

NRS 90207 Ground Fault Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

57

22

1. Utilization

The amplifier DPA 4411 has been specially designed to ensure durable performance and reliable operation of sound reinforcement systems with several independent loudspeaker lines. The DPA 4411 is best suited for call and message transmission installations, alert systems, and for general music applications in industrial enterprises, offices, multi-functionhalls and sport arenas, schools, churches, hotels, hospitals, super markets, cruise ships, and similar applications.

2. Installation Notes

When installing or mounting the amplifier, it is important to make sure that unhindered air-flowfrom the air inlets on the front to the air outlets on the rear of the appliance is guaranteed (see paragraph 10). To maintain EMVdisturbance-freeoperation, the use of shielded cable for all input, output and control lines, except for mains supply and battery cords, is mandatory. When installed inside of metal housings or rack systems, running unshielded output and control lines is possible. Cable screens have to be connected to the enclosure or rack system ground potential.

The amplifier has to be protected against:

-dropping or splashing water

-direct sunlight

-high environmental temperatures or direct radiation of heat sources

-high humidity and moisture

-dust

-shock or vibration

It is not permissible to place containers filled with liquids - e. g. vases - ontop of the appliance

When moving the amplifier from cold into warm environments, 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 connectors 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. Before Initial Operation

3.1 Mains Operation

When operated on mains power, use the included mains cord 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-polemachine-typesocket (10).

Caution The amplifier isfactory-setto230 V AC. To change the setting to 115 V AC, use the voltage switch (12).

For the operation with 115 V AC, the mains fuse (11) has to be replaced by an 8 Ampèreslow-blowfuse with the label print“T8AL” (see also paragraph 12).

When correctly connected and with mains power present the green STANDBY indicator (4) will light. Now, through sending the corresponding command via the serial interface of the Remote Module, it is possible to start the amplifier from the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook).

The POWER switch (9) on the rear of the amplifier – for bridging the starting relay – is meant for service purposes only. It offers the possibility to operate the amplifier without remote start.

Note The POWER switch (9) on the rear of the appliance is for service purposes only. Remotepower-offis not possible with the POWER switch set to ON. In this case, the STANDBY indicator (4) provides no function.

The DPA 4411 is equipped with a cut-indelay of approximately 3 seconds to efficiently suppresspower-onnoise. After this period of time and when no fault was detected, the green READY indicators (7) will light (see paragraph 7.2).

23

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. The amplifier is protected against confusion of poles. Additional internal protection is provided through two miniature fuses – F502 and F503 – one per each conductor (+ and -),which are located on the printed board assembly 85272 (see paragraph 12, diagram 11). For the DPA 4411 the battery cable’s diameter should be at least 2.5 mm2 and the cable length for the single distance should not exceed 4.0 m (max. drop in voltage < 1V).

Caution Operation of the DPA 4411 is solely allowable using batteries without grounding or batteries with grounding of the negative pole. Operation with batteries with grounding of the positive pole is not permissible.

4. Inputs INPUT 1 to INPUT 4

The inputs INPUT 1 to INPUT 4 (15) are electronically balanced. With a sensitivity of 775mV = 0dBu they are meant for the connection of control amplifiers. For the case that floating inputs are needed, the inputs are prepared for retrofitting input transformers.

Note If aswitch-contactis located between the control amplifier output and the power amplifier input, switch clicks might become audible during switching. If this is the case, incorporating input transformers (NRS 90208 - one per input) can solve the problem (see paragraph 9.3)

Parallel operation of INPUT 1 to INPUT 4 (15) is possible when using the ROUTING switches (16). This allows to connect the input signal through to feed several power amplifiers with the identical program. Use a permanent marker pen to mark the needed setting of the ROUTING switches (16) next to the ROUTING switch push-buttonsymbol.

diagram 1 input socket connection

diagram 2 LF-cablefor coupled operation of two DPA 4411

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5. Outputs

5.1 POWER OUTPUT

All power outputs are balanced and floating. When factory-shipped,the outputs arepre-configuredfor the connection of 100 V loudspeaker systems. Connection is achieved through plugging the supplied8-polesocket 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). When set to 20 V, operation of low impedance speakers with a load of 4 ohms is possible.

Caution During operation it is possible that the outputs of the POWER OUTPUT connector may conduct dangerous voltage (>34 V in peaks). Therefore, observing applicable safetyregulations is mandatory when connecting and installing loudspeaker lines

(see also paragraph 9.2).

5.2 POWER OUTPUT for the connection of 100 V loudspeaker systems

The use of speaker systems with 100 V matching transformers is recommended to reduce the lack in performance when the distance between amplifier and speaker systems exceeds 50 m. This m ethod also offers an easy way to distribute the output power. The total power consumption of the maximum amount of the connected speakers in the network has to match the amplifier’s overall output capacity of 100 watts (connection impedance 100 ohms). The connection is accomplished via the 100 V output (19)

(see figure 3).

diagram 3 Connection of 100 V (70 V or 50 V) loudspeaker systems

5.3 POWER OUTPUT for the connection of low-impedanceloudspeaker systems

When switching the output to 20 V, low-impedancespeaker systems(4-16ohms) can be connected to the corresponding output (see diagram 4). Because of line attenuation, the distance between amplifier and speaker systems should not exceed 50 m. It is of further importance that the overall impedance of the speakers does not decline 4 ohms and that the individual power handling capacity of each speaker is not exceeded.

diagram 4 Connection of low-impedanceloudspeaker systems

25

Free combination of the DPA 4411’s power output voltages, including mixed 100 V and low impedance (4 ohms) operation, is possible.

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. In that case the amplifier inputs have to be paralleled and the outputs are connected in series. For the connection of inputs, please refer to paragraph 4. For the connection of the loudspeaker network, refer to diagram 5.

Coupling is possible under the following restrictions: only identical amplifiers or power amps can be connected. Since doubling the output voltage comes along with serial connection, it is necessary to switch the outputs of both amplifiers to 50 V (see also paragraph 8), resulting again in an overall output voltage of 100 V. In this case the speaker chain’s minimum load impedance is 50 ohms // 50 nF. The input level controls of the corresponding channels of the DPA 4411 have to be set to equal values (refer also to the PROMATRIX handbook).

This results in the following output combinations with a single DPA 4411:

4 x 100 W or 2 x 100 W+ 1 x 200 Wor 2 x 200 W.

diagram 5 Possible output configuration of the DPA 4411

5.5 MONITOR output

The MONITOR output of the DPA 4411 is configured as monitor bus. It gets connected to thePROMATRIX Manager DPM 4000 via the serial port REMOTE CONTROL (13). If a floating output is needed,the output is prepared for retrofitting a monitor output transformer. In this case the extension NRS 90227 is necessary (see paragraph 9.4). The low-impedancemonitor output is electronically balanced. Therefore, the connected cables may be up to approx. 200 m in length.

The PROMATRIX Manager DPM 4000 (see PROMATRIX handbook) offers connection for monitor amplifiers; which can be set to input-monitoringoroutput-monitoringfor the desired amplifier channel.

6. Integrated Remote Module

The integrated remote module of the power amplifier DPA 4411 provides the following functions:

input levels of INPUT 1 to INPUT 4 can be set via programmable audio level controls

reading level values of the audio level controls

setting level offsets 1 to 4 via virtual controllers

mute function 1 to 4 (via level controls)

26

mains operation remote control ON/OFF

battery operation remote control ON/OFF

monitoring and fault message transmission via the PROMATRIX Manager DPM 4000; in accordance to DIN EN 60849 standard

thermal overload of the mains transformer

thermal overload of power output stages 1 to 4

monitoring of the functioning of the power output stages 1 to 4 via pilot tone signal (optional, only with NRS 90206 installed)

ground fault detection for loudspeaker lines 1 to 4 (optional, only with NRS 90207 installed)

measuring of input and output level peaks 1 to 4

measuring of output voltages / levels of the power outputs 1 to 4

measuring of output currents of the power outputs 1 to 4

monitoring of connected loads 1 to 4 via current-voltage-measuring

recognition of amplifier type including user-definablename

reading of software revision of the remote module

reading of error flags

reading of the output configuration

recognition of extensions NRS 90206 and NRS 90207

switching the input monitor / output monitor 1 to 4 to the monitor bus

pilot tone signal ON/OFF (optional, only with NRS 90206 installed)

ground fault error flags reset

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.

By sending the corresponding command via the serial port REMOTE CONTROL (13) of the remote module, this function is activated from the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook).

7. Indicators And Fault Notification

7.1 STANDBY Indicator

When correctly connected and with mains voltage and/or battery voltage present, the green STANDBY indicator (4) lights.

7.2 READY Indicator

The power amplifier DPA 4411 provides a power-ondelay of approximately 3 s to prevent switch clicks from becoming audible. If after this period of time no faulty condition has been detected, the green READY indicator (7) lights and themute-relayspull. When thermal overload of the mains transformer or of one of the power output stages is detected, the corresponding green READY indicator (7) will not light and the accordingmute-relaydrops. If, with the NRS 90206 extension installed thepilot-threshold(see paragraph 9.1) is declined, the corresponding green READY indicator (7) goes out but the amplifier stays operational and a fault message gets transmitted to the PROMATRIX Manager DPM 4000.

7.3 PROTECT Indicator

In case of thermal overload of the mains transformer or of a power output stage is detected, the red PROTECT indicator (5) will light. During thermal overload of the mains transformer, all mute-relaysdrop while during thermal overload of a power output stage, only the accordingmute-relaydrops. After the mains transformer or the power amplifier have regained their normal temperature, the red PROTECT indicator (5) automatically goes out and the appliance recovers normal operation mode. The faulty condition could have been caused by either overload, too high environmental temperature, or by an error in the ventilation system. Afault-messageis transmitted to the PROMATRIX Manager DPM 4000.

27

7.4 GROUND FAULT Indicator

If, with built-inNRS 90207 a ground fault condition at one of the power outputs occurs, the corresponding red GROUND FAULT indicator (6) lights and afault-messageis transmitted to the PROMATRIX Manager DPM 4000. The power amplifier keeps up normal operation during the occurrence of thisfault-type.After solving the problem, the GROUND FAULT indicator (6) can be reset by pressing the TEST button (3) or by sending the corresponding command via the serial port of the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook) (see paragraph 9.2).

7.5 Meter Instruments And CLIP Indicators

The green LED-indicator-13dB and 0 dB (1) as well as the redLED-indicatorCLIP (2) allow the precise monitoring of output levels, providing the possibility to securely prevent distortion and clipping that could lead to damaging the connected loudspeaker systems.

-When during program peaks the red CLIP-LED(2) lights briefly, the maximumdistortion-freeoutput is gained.

-Whenever the CLIP-LED(2) lights continuously, the amplifier is driven into overdrive and the input level should be reduced.

-Overload or short-circuitat the output is the cause for the greenLED-indicator(1) to beout or only briefly lit while at the same time the redCLIP-LED(2) blinks. In that case, please check the impedance of the connected load.

Caution

 

 

During normal operation, the red CLIP-LED(2) should hardly light and if, than

 

 

 

 

 

only very briefly !

 

 

 

 

 

 

 

 

 

7.6 STATUS Indicator

The yellow STATUS-LED(14) that is located on the rear of the appliance lights briefly during normal operation when the DPM 4000 addresses a query to the amplifier. For further information, please refer to the PROMATRIX handbook.

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 is factory-presetto 100 V. Switching the output voltage to 20 V, 50 V or 70 V should only be carried out by qualified DYNACORD service personnel.

Caution

 

Unplug the mains cord and disconnect batteries before opening the appliance!

 

 

 

-for opening the appliance, please remove the 9 screws on the top of the appliance that lock the cover plate.

-the four output transformers 356762 are located on the left hand side of the appliance. They are numbered 1, 2, 3, and 4; starting from the rear cover plate of the appliance.

-for changing the output voltage (see diagram 6) you have to unsolder the orange wire attached to the transformer’s soldering tab 19 (100 V) and solder it instead to the required soldering tab (70 V, 50 V or 20 V).

-closing the appliance: use the 9 screws M3 x 6 DIN 7500 to reattach the cover plate.

diagram 6 Switching the output voltage at the output transformers 356762

diagram 7 Output configuration settings of the amplifiers (rear view)

28

Note After changing the output voltage, use a waterproof marker pen to note the correct, newly set value on thelabel-fieldOUTPUT VOLTAGE (20) on the rear of the appliance. Additionally note the corresponding output configuration (see diagram 5) on the label OUT CONFIG TYPE (20).

According to the description in diagram 7, adjust the switches S801 and S802 on the printed board assembly 89019.2 that are located next to the transformers on the bottom of the appliance’s enclosure (refer also to paragraph 5.4 ).

diagram 8 Printed board assembly 89019.2 showing the position of the switches S801 and S802

9. Additional Functions And Features (refer to qualified service personnel only!)

9.1 NRS 90206 Pilot Ton Surveillance

Using the extension-kitNRS 90206 provides continuous monitoring (surveillance) of the individual amplifier channels. This is achieved by sending an ultralow-level19 kHz pilot tone through the device. It enters the signal path post level controls, runs through the amplification stages and gets filtered out and evaluated at the output. In case the result of this evaluation shows that the pilot dropped beneath a defined threshold or is missing at all, the corresponding READY indicator AMP 1 - 4 (7) goes out but the power amplifier upholds its normal operation. Afault-messageis transmitted to the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook). Theextension-kitNRS 90206 comes as aplug-inboard assembly and consists of a 19 kHztone-generatorand four selective 19 kHz receivers with evaluation stage.

Caution Unplug the mains cord and disconnect batteries before opening the appliance!

9.1.1 To Install The NRS 90206 Proceed As Follows (see diagram 9):

-for opening the appliance, please remove the 9 screws on the top of the appliance that lock the cover plate.

-the NRS 90206 gets retrofitted on the printed board assembly 89019.1, which is located behind the input printed board assembly 81331, in the front area, attached to the left side panel of the amplifier (in front view).

-Be sure to first insert the included board-guidesbefore installing the printed board assembly, assuring the correct position of their guide grooves. The release lever of the guides marked “A” points to the top, while the one of the guides marked “B” points downwards.

-the NRS 90206 extension-kitneeds to be inserted with its printed side pointing to the top, until it firmly locks in place. Make sure that the power resistors R917 to R920 that are located underneath theNRS-printedboard assembly do not touch this board.

-closing the appliance: use the 9 screws M3 x 6 DIN 7500 to reattach the cover plate.

29

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-inNRS 90206 andpowered-onamplifier, theREADY-indicators(7) have to light. Use the check andreset-buttonTEST (3) to check the functioning of the pilot tone surveillance. When holding theTEST-buttonpressed, the 19 kHztone-generatoris switched off, theREADY-indicators(7) go out and afault-messageis being transmitted to the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook). Approximately 3 seconds after releasing theTEST-button,theREADY-indicators(7) have to light again.

9.2 NRS 90207 Ground Fault Surveillance

The VDE regulation DIN VDE 0800 has to be obeyed when planning and operating 100 V sound reinforcement systems. Especially 100 V alert systems have to be in accordance with all protection measures for class 3 appliances.

We recommend the use of the ground fault surveillance module NRS 90207 for floating speaker network installations, offering surveillance of the network insulation. Error registration: A ground fault message signals that a damaged cable has been detected – possibly resulting in an upcoming cable interruption – or a wrongly connected cable, possibly resulting in malfunctioning. The information “ground fault” is memorized as long as the amplifier is powered on or a loaded battery is connected, even for short-term( > 5 s) ground faults. Thefault-messageis transmitted to the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook).

The NRS 90207 extension comes as a plug-inprinted board assembly and consists of a monitoring circuit witherror-storageanddisplay-driverfor four 100 V outputs.

Caution

 

Unplug the mains cord and disconnect batteries before opening the appliance!

 

 

 

9.2.1 To Install The NRS 90207 Proceed As Follows (see diagram 9):

-for opening the appliance, please remove the 9 screws on the top of the appliance that lock the cover plate.

-the NRS 90207 gets retrofitted on the printed board assembly 89019.1, which is located behind the input printed board assembly 81331, in the front area, attached to the left side panel of the amplifier (in front view).

-Be sure to first insert the included board-guidesbefore installing the NRS 90207, assuring the correct position of their guide grooves. The release lever of the guides marked “C” points to the top, while the one of the guides marked “D” points downwards.

-the NRS 90207 extension-kitneeds to be inserted with its printed side pointing to the top, until it firmly locks in place. Make sure that the power resistors R917 to R920 that are located underneath theNRS-printedboard assembly do not touch this board.

-closing the appliance: use the 9 screws M3 x 6 DIN 7500 to reattach the cover plate.

30

9.2.2 Checking The Function Of The NRS 90207:

With built-inNRS 90207 andpowered-onamplifier, theREADY-indicators(7) have to light. When using an external switch to shortcut one pole of the 100 V speaker network via a 47 k ohms resistor and the safety earthing conductor for approximately 5 seconds, the corresponding GROUND FAULT indicator (6) has to light. Thefault-messageis transmitted to the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook). After releasing the external switch, indication and message have to stay present. Use theTEST-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-kitis needed per input.

Note If aswitch-contactis located between the control amplifier output and the power amplifier input, switch clicks might become audible during switching. If this is the case, incorporating input transformers can solve the problem.

Caution

 

Unplug the mains cord and disconnect batteries before opening the appliance!

 

 

 

9.3.1 Retrofitting The NRS 90208 On The Printed Board Assembly 81331:

-for opening the appliance, please remove the 9 screws on the top of the appliance that lock the cover plate

-detach the rear panel by removing the screws marked “A” to “D” (refer to the picture of the rear panel on page 21).

-remove the input printed board assembly 81331: (see diagram 10)

remove the 8 screws marked “D” that tighten the input sockets and detach the 6 flat cables CN1 to CN6.

For removing the printed board assembly 81331 you have to unscrew the two screws on the side panel

-before installing the input transformer, make sure to unsolder the resistors for T1: R1/R5, for T2: R9/R13, for T3: R17/R21, for T4: R25/R29 and clean the corresponding eyelets

-place the input transformer onto the printed board assembly 81331, so that the markings on the board and on the bottom part of the transformer are aligned. As a protection against short-circuit,place the suppliedinsulating disk between the printed board and the transformer

-before re-installingthe printed board assembly 81331, reconnect the flat cables CN1 to CN6. Keep in mind that the plug of the cable leading to CN1 (AMP1+2) is marked. Now, reconnect the printed board assembly 81331 to the amplifier’s side panel, using two screws M3 x 12

-installation of the rear panel:

first, connect the POWER OUTPUT printed board assembly to the rear panel, using two screws marked “C”. Make sure not to squeeze any wires. Now, you can slide the rear panel underneath the four lock-fish-platesof the input sockets. In doing so, mind that the acknowledge button of the ROUTING switches need to be pulled through the corresponding openings

input sockets are tightened with two screws marked “D”, each

the power supply printed board assembly 85272 gets tightened using two screws marked “C”; mind the acknowledge button of the CIRCUIT TO CHASSIS SWITCH.

tighten the Remote Control printed board assembly with two screws marked “C”; mind the yellow

STATUS-LED

tighten the mains-inputprinted board assembly 86243 using three screws marked “C”; tighten the mains connector (10) and the mains selector switch (12) with individual screws andself-securing nuts M3 reinstall the rear panel using 6 screws marked “A”

tighten the heat sink using four screws marked “B”

- closing the appliance: reconnect thecover-plateusing 9 screws M3 x 6 DIN 7500

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diagram 10 Printed board assembly 81331 showing the position of the input transformers NRS 90208

9.4 Monitor Output Transformer NRS 90227 Offering A Floating, Balanced MONITOR Output

In case a floating MONITOR output is needed, the monitor amplifier’ output is prepared for retrofitting an output transformer. Herefore, you will need the extension kit NRS 90227.

Caution

 

Unplug the mains cord and disconnect batteries before opening the appliance!

 

 

 

9.4.1 To Install The NRS 90227 Proceed As Follows: (see diagram 10)

-for opening the appliance, please remove the 9 screws on the top of the appliance that lock the cover plate.

-de-installthe input printed board assembly 81331 following the description in the paragraph 9.3.1.

-disconnect the resistors R95, R96, R97 and R101 before installing the monitor output transformer.

-mount the monitor output transformer on the printed board assembly 81331; in doing so, polarity is of no importance, since the transformer is balanced.

reinstall the input printed board assembly 81331 following the description in paragraph 9.3.1.

-closing the appliance: use the 9 screws M3 x 6 DIN 7500 to reattach the cover plate.

10. 19"-FlightcaseOr19"-RackSystem Installation

Caution

 

Operating the DPA 4411 without cover-plateis 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 theinside-wallof 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. At least 100 mm of space should be left above a rack system to guarantee sufficient air circulation. Since, during the operation of the DPA 4411 the environmental temperature within the rack closet may increase by about 10° C, minding the maximum allowable temperature values for other equipment that is installed into the same rack system or enclosure is of major importance.

Note

 

 

For trouble-freeoperation of the appliance, the maximum environmental temperature

 

 

 

 

 

of +40 °C is not to be exceeded.

 

 

 

 

 

 

 

 

 

32

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. If several units with ground lift switch are installed in a common enclosure or rack system, it is recommended to set the ground lift switches of all devices but one to “ungrounded”. Set to “ungrounded”, the impedance between signal ground and enclosure is: 100 k ohms // 100 nF. It is necessary to maintain the immunity from EMV.

12. Fuses

Location

Pos.

Used for

Value

Dimensions

Standard

 

 

 

 

 

 

Fuse switch (11)

F601

Mains fuse 230 V~ AC

T4AL 250V

5 x 20 mm

IEC 127

Fuse switch (11)

F601

Mains fuse 115 V~ AC

T8AH 250V

5 x 20 mm

IEC 127

Board 86243

F602

Mains fuse AC

T1AL 250V

8.5 x 8.45 mm

IEC 127

Board 85272

F502

Battery fuse 24 V DC

25AL 32V

Flat type fuse

DIN 72581-3

Board 85272

F503

Battery fuse 24 V DC

25AL 32V

Flat type fuse

DIN 72581-3

Board 85272

F504

Power-AMP1

T6.3AL 250V

5 x 20 mm

IEC 127

Board 85272

F505

Power-AMP2

T6.3AL 250V

5 x 20 mm

IEC 127

Board 85272

F506

Power-AMP3

T6.3AL 250V

5 x 20 mm

IEC 127

Board 85272

F507

Power-AMP4

T6.3AL 250V

5 x 20 mm

IEC 127

 

 

 

 

 

 

Changing The Fuses F502 And F503 (see diagram 11):

 

 

 

Caution

 

Unplug the mains cord and disconnect batteries before opening the appliance!

 

 

 

 

 

 

The battery fuses F 502 and F503 are located on the mains (power supply) printed board assembly 85272 behind the AMP-batteryconnectors. In case they need to be replaced, commence as follows:

-open the appliance by removing the 9 screws that lock the cover-plate

-remove the mains input printed board assembly 86243 that is located at the rear inner wall. Therefore, unplug the yellow/green ground conductor form the corresponding connector at the rear inner wall. To remove the AMP-plug,press itslock-piece

-now, you have to remove the 3 screws of the mains-inputprinted board assembly 86243 marked “C” (refer to the picture of the rear panel on page 21).

-disconnect the 6-poleflat cable between the two relays on themains-inputprinted board assembly 86243 that is connected to the malemulti-pointconnector B602

-now, the hinged mains-inputprinted board assembly 86243 can be turned up. In doing so, be careful not to damage any wiring or other parts

-the fuses F502 and F503 are now easy to get to and can be removed to the top

-for re-installingthemains-inputprinted board assembly 86243, proceed in opposite order:

tighten the mains-inputprinted board assembly 86243 with the 3 screws marked “C”, where each, the mains plug (10) and the mains selector switch (12) need to be connected using individual screws andself-securingnuts M3.

-reconnect the 6-poleflat cable to themulti-pointconnector B602

-reconnect the yellow/green ground cord to the ground connector on the rear panel; make sure that it sits tight

-closing the appliance: reattach the cover-platewith 9 screws M3 x 6 DIN 7500

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Caution For safety reasons make sure that after reassembling, wires running underneath themains-inputprinted 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-fusesF502 to F507

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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

 

 

I

 

 

 

 

 

 

 

 

 

 

mains operation

Umains[V]

Imains[A]

Pmains[VA]

Pmains[W]

Pout [W]

Pv [W]

 

 

 

 

 

 

 

Standby

230

0,016

3,7

1,5

0

1,5

0idling

230

0,29

67

40

0

40

Normal operation (-10dB)

230

1,64

377

275

40

235

Alarm (-3dB)

230

3,25

748

585

200

385

Nominal conditions

230

4,39

1010

815

400

415

 

 

 

 

 

 

 

mains initial current inrush

 

 

< 36 A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mains operation

Umains[V]

Imains[A]

Pmains[VA]

Pmains[W]

Pout [W]

Pv [W]

 

 

 

 

 

 

 

Standby

115

0,30

3,5

1,5

0

1,5

0idling

115

0,50

58

40

0

40

Normal operation (-10dB)

115

3,28

377

275

40

235

Alarm (-3dB)

115

6,50

748

585

200

385

Nominal conditions

115

8,78

1010

815

400

415

 

 

 

 

 

 

 

mains initial current inrush

 

 

< 20 A

 

 

 

 

 

 

 

 

 

 

Pmains[VA] =apparent power Umains*Imains, Pmains[W] =true power, Pout[W] =output power, Pv[W] =leakage power

Power supply on battery operation:

 

 

 

 

operation voltage

 

 

24 V DC, -10/+30%

 

 

 

 

 

 

 

battery operation

UB [V]

IB [A]

Pi [VA]

Pout [W]

Pv [W]

 

 

 

 

 

 

Standby

24

0,06

1,5

0

1,5

0idling

24

1,1

26

0

26

Normal operation (-10dB)

24

7,5

180

40

140

Nominal conditions

24

18

432

250

182

 

 

 

 

 

 

battery initial current inrush

 

 

< 3,9 A

 

 

 

 

 

 

 

 

Pi[W] = input power UB*IB, Pout [W] = output power, Pv [W] = leakage power

input characteristics: nominal input level

power output characteristics:

nominal output power with mains supply nominal output voltage

with mains supply

with battery supply at 24 V DC nominal load impedance

minimal allowable output impedance:

electronically balanced

775 mV = 0 dBu / 10 k ohms balanced, floating

4 x 100 W (according to IEC 268-3)

100 V ( 70 V / 50 V / 20 V ) 79 V ( 56 V / 40 V / 16 V ) 100 ohms ( 50 / 25 / 4 ohms)

100 W output power

200 W output power

 

 

 

 

 

100 V output

 

100 Ohm // 250 nF

50 V + 50 V output

50 Ohm // 500 nF

70 V output

 

50 Ohm // 500 nF

—————

—————

50 V output

 

25 Ohm // 1000 nF

—————

—————

20 V output

 

4 Ohm // 6250 nF

—————

—————

 

 

 

 

 

noise voltage (A-weighted)

 

-56dBu

 

THD at PA NOMINAL

 

1 %

 

amplification frequency response

60 Hz .. 20 kHz

 

35

distortion-limitedresponse

 

(PA NOMINAL -3dB,kS = 1 %)

60 Hz .. 5 kHz

crosstalk between two channels

³ 80dB at 1 kHz / ³ 60dB at 10 kHz

MONITOR output characteristics:

electronically balanced

nominal output voltage

2 V = + 8.2 dBu

nominal load impedance

600 ohms

amplification frequency response

60 Hz .. 20 kHz

environmental temperature

+5 °C .. +40 °C

technical regulations:

 

This appliance is in accordance to the following regulations

EN 55103-1,EN55103-2,EN 55022

 

 

EN 60065, EN 60555

dimensions (W x H x D)

19“ (483 mm) x 3HU (132 mm) x 345 mm

installation depth without external connectors

340 mm

installation depth incl. external connectors

max. 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. 121 641

NRS 90227

monitor output transformer

Order No. 121 679

14. Specifications For DPA 4411 Accessories

 

14.1 NRS 90206 pilot tone surveillance (for four amplifiers)

 

pilot frequency

19 kHz ± 1%

fault recognition threshold

£ 12 mV

fault message output

separate for each output; via

 

 

PROMATRIX Manager DPM 4000

14.2 NRS 90207 ground fault surveillance (for four outputs)

 

input

 

loudspeaker line 20 V / 50V / 70V / 100V

fault message output

separate for each output; via

 

 

PROMATRIX Manager DPM 4000

voltage strength

1000 Veff

fault recognition threshold

£ 50 k ohms

14.3 NRS 90208 input transformer (per single input)

 

transmission range

20 Hz .. 20 kHz

input impedance

³ 10 k ohms

idling ratio

 

1:1

primary winding resistance

1420 ohms at 20°C

secondary winding resistance

1420 ohms at 20°C

14.4 NRS 90227 monitor output transformer

 

transmission range

40 Hz .. 20 kHz

nominal load impedance

³ 600 ohms

idling ratio

 

1:1

primary winding resistance

18 ohms at 20°C

secondary winding resistance

18 ohms at 20°C

36