Dynacord Car Amplifier DPA 4410 User Manual

OWNER’S MANUAL  
DPA 4410 POWER AMPLIFIER  
Features  
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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  
17  
INDICATORS, CONTROLS AND CONNECTIONS  
1
LED meters  
2
CLIP indicator  
3
4
TEST button for checking and reset  
STANDBY indicator  
5
PROTECT indicator  
6
7
GROUND FAULT indicator  
READY indicator  
8
air inlets  
9
POWER on switch  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
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 plate screws (see also paragraph 11)  
19  
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  
20  
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.  
21  
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).  
Using the ROUTING switch (15) allows parallel operation of the inputs 1 - 4, providing the through  
connection of the input signal, when feeding the identical program to several power amplifiers. The correct  
input level can be set by using the level controls (13).  
Hinweis  
Visual determination of the ROUTING switches’  
required settings can be established by marking the  
corresponding symbols, located next to the switches,  
using a permanent maker.  
ROUTING Switch  
ON  
OFF  
Diagram 1 Input connections  
Diagram 2 NF cable for coupled operation of two DPA 4410  
5. OUTPUTS  
5.1 POWER OUTPUT  
All power outputs are balanced and off ground potential. The outputs are presetted by DYNACORD for  
the connection of 100 V speaker systems. The connection is achieved through plugging the 8-pole socket  
into the connection strip (17). Using the output transformer switch, the output voltage can be changed to  
70 V, 50 V and 20 V (see also paragraph 8). In the 20 V position, the operation of low impedance speakers  
with a load of 4 ohms is possible.  
22  
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). The connection is performed via the 100 V output (17) (see also diagram 3).  
Diagram 3 Connecting 100 V (70 V or 50 V) speakers  
5.3 POWER OUTPUT with low impedance speaker systems  
After switching the output to 20 V, low impedance speaker systems (4 - 16 ohms) can be connected to  
the corresponding output (see also diagram 4). Because of an occurring drop in the overall performance,  
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.  
Free combination of the DPA 4410’s power output voltages, including mixed 100 V and low impedance  
(4 ohms) operation, is possible.  
Diagram 4 Connecting low impedance speakers  
23  
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).  
Coupling is possible under the following restrictions: only identical amplifiers can be connected. Since  
doubling the output voltage comes along with the serial connection, it is necessary to switch the outputs  
of both amplifiers to 50 V (see also paragraph 8), resulting again in 100 V overall output voltage. In this  
case the speaker chain’s minimum load impedance is 50 ohms. The LEVEL controls (13) of the two DPA  
4410 have to be set fully to the right.  
This procedure results in the following output combinations:  
4 x 100 W or 2 x 100 W + 1 x 200 W or 2 x 200 W  
For information about the input connection, please refer to paragraph 4 of this manual. For the connection  
of the speaker network, please refer to the diagram below.  
Attention During the operation the pins of the POWER OUTPUT strip may conduct dangerous  
voltage (> 34 V in peaks). Therefore, the connected speaker networks have to be  
installed in accordance to applicable security regulations (see also paragraph 9.2).  
Diagram 5 Connecting 100 V speakers with a power increase to 200 V  
5.5 MONITOR output  
The MONITOR outputs (16) provide an unbalanced, low-impedance signal and are meant for the  
connection of monitoring amplifiers. Since the outputs are of low impedance, the cable length of the  
connected speaker systems may be up to 200 m. Connection is performed via the REMOTE CONTROL  
D-Sub connector (see also diagram 6).  
5.6 REMOTE CONTROL connection  
The following control IN/OUTs are provided through the 15-pole D-Sub REMOTE CONTROL connector  
(16):  
- 24 V standby voltage  
- POWER REMOTE start  
- BATTERY REMOTE start  
- MONITOR output  
- negative pole grounded  
- closing contact over ground  
- closing contact over ground  
- single-sided grounding  
- off potential contact  
- READY message  
24  
1
2
3
4
5
6
9
+24V = Standby  
^ Standby ground  
power remote  
battery remote  
^ monitor ground  
monitor 3  
11  
12  
13  
14  
7
^ monitor ground  
monitor 2  
^ monitor ground  
monitor 4  
8
15  
ready  
^ monitor ground  
10 monitor 1  
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. When during program peaks the  
red CLIP LED (2) lights briefly, the maximum distortion-free output is gained. Whenever the CLIP LED  
(2) is continuously lit, the amplifier is driven into overdrive and the input level should be reduced.  
7. 24 V DC OPERATION  
The DPA 4410 can be operated on the mains power supply or fed by an external 24 V battery.  
Switching to battery operation is performed through an internal relay.  
The battery is connected to the socket on the rear of the appliance (20), using insulated AMP flat  
connectors 6.3 x 0.8 mm. The amplifier is protected against the confusion of poles. Additional internal  
protection is provided by two 25 A miniature fuses, located on the printed board assembly 85264 (see  
also diagram 10).  
2
The battery cable’s cross section should be at least 2.5 mm and the length of the cable should not exceed  
4.0 m (max. drop in voltage <1 V).  
Attention. The DPA 4410 can only be operated using batteries without grounding or batteries with  
grounding of the negative pole. Operation with batteries with grounding of the positive  
pole is not possible.  
8. SETTING THE OUTPUT VOLTAGE (only by qualified service personal)  
The DPA 4410 provides output voltages of either 20 V, 50 V, 70 V, or 100 V. The output voltage is preset  
to 100 V. Changing the output voltage to a value of 20 V, 50 V, or 70 V should only be carried out by  
authorized DYNACORD service personal.  
Attention During the operation the pins of the POWER OUTPUT strip may conduct dangerous  
voltage (> 34 V in peaks). Therefore, the connected speaker networks have to be  
installed in accordance to applicable security regulations (see also paragraph 9.2).  
- To open the appliance remove the top plate.  
- The four output transformers 354030 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.  
- Before switching an output, the corresponding transformer has to be removed. This is done by detaching  
the screws on the bottom plate of the appliance.  
- For changing the output voltage (see also diagram 7), the orange wire on the transformer attached to  
the soldering tab 13 (100 V) has to be unsoldered and soldered instead to the required soldering tab  
(70 V, 50 V, or 20 V).  
- The output transformer as well as the screws on the bottom plate have to be replaced at the same spot.  
- The top cover plate of the appliance has to be replaced.  
25  
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. 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 and the READY fault relay  
is reset. The fault message appears as collective fault message at the READY relay’s off-potential contact  
on the REMOTE CONTROL D-Sub connector (16).  
The extension kit NRS 90206 comes as a plug-in board assembly. It is equipped with a 19 kHz oscillator  
and four selective 19 kHz receivers with evaluation stages.  
Installation of the NRS 90206 (see also diagram 8):  
- Follow the descriptions given in paragraph 8 to open the appliance  
- Be sure to first insert the included board-guides before installing the printed circuit board, assuring the  
correct position of their guide grooves. The release lever of the guides marked as “A” points to the top,  
while the one of the guides marked as “B” points down.  
- The printed board assembly has to be inserted into the guides with its printed side pointing to the top,  
until it firmly locks in place.  
- Reassemble the appliance following the descriptions under paragraph 8.  
PILOT TONE DETECTION  
NRS 90206  
GROUND FAULT DETECTION  
NRS 90207  
A
B
C
D
Diagram 8  
Printed circuit board 89018.1  
with the inserted modules NRS 90206 and NRS 90207  
26  
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.  
9.2 NRS 90207 ground fault surveillance  
The VDE regulation DIN VDE 0800 has to be obeyed when planning and afterwards operating 100 V  
sound reinforcement systems. Especially 100 V alert systems have to be in accordance with all protection  
measures for class 3 appliances.  
Therefore, we recommend for off-ground potential speaker network installations the use of the ground  
fault surveill ance module NRS 90207 for automated 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.  
Whenever the DPA 4410 is operational or connected to an intact battery, the message “Ground Fault” is  
given out even with short-time ground fault occurrences (>5 sec). The ground fault message appears as  
collective fault message at the READY relay’s off-potential contact on the REMOTE CONTROL D-Sub  
connector (16).  
The extension kit NRS 90207 comes as a plug-in printed board assembly, providing monitoring circuitry  
with error-storage and display driver for four 100 V outputs.  
Installation of the NRS 90207 (see also diagram 8):  
- Follow the descriptions given in paragraph 8 to open the appliance.  
- Be sure to first insert the included board-guides before installing the printed circuit board, assuring the  
correct position of their guide grooves. The release lever of the guides marked as “C” points to the top,  
while the one of the guides marked as “D” points down.  
- The printed circuit board has to be inserted into the guides with its printed side pointing to the top,  
until it firmly locks in place.  
- Reassemble the appliance following the descriptions under paragraph 8.  
Checking the functioning:  
With built-in NRS 90207 and operational amplifier, the READY indicators (7) have to be lit. When using  
an external switch to shortcut one pole of the 100 V speaker network via a 47 kohms resistor and the  
ground conductor, the GROUND FAULT indicator (6) has to light and the READY fault relay has to reset.  
After releasing the button, the messages has to stay present. Use the TEST button (3) to reset the ground  
fault surveillance function.  
9.3 NRS 90208 input transformer  
The DPA 4410 is prepared for the installation of the optional input transformer NRS 90208. In case  
off-ground potential inputs are needed, one NRS 90208 has to be installed per input channel.  
Installation of the NRS 90208 (see also diagram 8):  
- Follow the descriptions given in paragraph 8 to open the appliance.  
- Follow the descriptions given in paragraph 11 (exchange of the fuses F502 and F503) to detach the rear  
cover plate.  
- Detaching the input printed circuit board 81330.1:  
first disconnect the four flat cables and then detach the screws of the input sockets.  
- Before inserting the input transformer make sure to unsolder the resistors for: T101 : R101/R102, for  
T102 : R121/R122, for T103 : R141/R142, and for T104 : R161/R162.  
- Attach the input transformer onto the printed circuit board, so that the markings on both parts are  
alligned.  
- For the re-installation of the printed circuit board follow the same steps as mentioned above; just in the  
opposite order.  
- To attach the rear cover plate follow the descriptions given in paragraph 11.  
- Close the appliance in accordance with the descriptions in paragraph 8.  
27  
T101  
T104  
INPUT 1  
INPUT 4  
T102  
T103  
INPUT 2  
INPUT 3  
TO AMP_A  
PCB 84167  
TO REMOTE CONTROL  
PCB 81330.2  
TO AMP_B  
PCB 84167  
Diagram 9  
Printed circuit board 81330.1 with inserted input transformers NRS90208  
10. 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. Between the amplifier’s rear plate and the back-wall of the surrounding enclosure there has to  
be at least a space of 60 mm x 330 mm up to the enclosures ventilation gaps. Above the rack system  
should be at least a space of 100 mm for a sufficient circulation of the air. During the operation of the DPA  
4410 the environmental temperature within the rack closet may increase by about 10° C. This has to be  
taken into consideration when installing other equipment into the same rack system or other enclosures.  
Note  
For trouble-free operation of the appliance, the maximum environmental temperature should  
not exceed +40° C.  
11. FUSES  
location  
pos.  
used for  
value  
dimensions  
standard  
fuse switch (11)  
fuse switch (11)  
PCB 85264.2  
PCB 85264.2  
PCB 85264.2  
PCB 85264.2  
PCB 85264.2  
PCB 85264.2  
F501  
F501  
F502  
F503  
F504  
F505  
F506  
F507  
mains fuse 230V~ AC  
mains fuse 115V~ AC  
battery fuse 24V DC  
battery fuse 24V DC  
power-AMP 1  
power-AMP 2  
power-AMP 3  
power-AMP 4  
T4A 250V  
T8A 250V  
25A 32V  
5 x 20 mm  
5 x 20 mm  
flat-type fuse  
flat-type fuse  
5 x 20 mm  
5 x 20 mm  
5 x 20 mm  
5 x 20 mm  
IEC 127  
IEC 127  
DIN 72581-3  
DIN 72581-3  
IEC 127  
IEC 127  
IEC 127  
IEC 127  
25A 32V  
T6.3A 250V  
T6.3A 250V  
T6.3A 250V  
T6.3A 250V  
28  
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. Unlock the screws marked as “A” (see also  
the diagram on page 2, picturing the rear cover plate). The 4-pole flat cable between the two relays that  
is connected to the male multi-point connector B502 on the printed circuit board has to be disconnected.  
Now, the hinged rear plate can be turned up and taken out. Be careful not to damage any printed circuit  
board or the wiring. The fuses F502 and F503 are now easy to get to (see also diagram 10). Follow the  
same procedure in the opposite order to reattach the rear cover plate. After tightening the screws of the  
rear plate, the 4-pole flat cable has to be reconnected to the male multi-point connector B502. The top  
cover plate has to be reattached.  
29  
12. SPECIFICATIONS OF THE DPA 4410  
Mains supply:  
Voltage:  
115 V / 230 V~ AC, ±10  
Frequency:  
Protection class:  
50 - 60  
I
mains supply  
floating  
normal operation (-10 dB) 230  
alert (-3 dB)  
Umains [V]  
230  
Imains [A]  
Pmains [VA]  
Pmains [W]  
Pout [W]  
Pv [W]  
0.27  
1.64  
3.25  
4.39  
62  
35  
0
40  
200  
400  
35  
377  
748  
1010  
275  
585  
815  
235  
385  
415  
230  
230  
normal operation  
starting current  
< 36 A  
mains supply  
floating  
normal operation (-10 dB) 115  
alert (-3 dB)  
Umains [V]  
115  
Imains [A]  
Pmains [VA]  
Pmains [W]  
Pout [W]  
Pv [W]  
0.54  
3.28  
6.50  
8.78  
62  
35  
0
40  
200  
400  
35  
377  
748  
1010  
275  
585  
815  
235  
385  
415  
115  
115  
normal operation  
starting current  
< 20 A  
Pmains [VA]=apparent power Umains*Imains, Pmains [W]=true power, Pout [W]=output power  
Pv [W]=leakage power  
Battery supply:  
Voltage:  
24 V DC, -10/+30 %  
battery supply  
floating  
normal operation (-10 dB) 24  
normal operation  
UB [V]  
24  
IB [A]  
Pi [W]  
Pout [W]  
Pv [W]  
1.0  
7.5  
18  
24  
180  
432  
0
40  
250  
24  
140  
182  
24  
starting current  
< 3.9 A  
Pi [W]=input power UB*IB, Pout [W]=output power, Pv [W]=leakage power  
Input characteristics:  
Nominal input level  
electronically balanced  
775 mV = 0 dBu / 10 kohms  
Power output characteristics:  
Nominal output power  
with mains supply  
balanced, off ground potential  
4 x 100 W ( IEC 268-3)  
Nominal output voltage  
with mains supply  
Nominal load impedance  
100 V (70 V / 50 V / 20 V)  
100 ohms (50 / 25 / 4 ohms)  
minimal total impedance  
100 W Output capacity  
200 W Output capacity  
100 V Output  
70 V Output  
50 V Output  
20 V Output  
100 Ohm / 250 nF  
50 V + 50 V Output  
———  
———  
50 Ohm / 500 nF  
50 Ohm / 500 nF  
25 Ohm / 1000 nF  
4 Ohm/ 6250 nF  
———  
———  
———  
———  
Noise voltage (A-weighted)  
THD at PA nominal  
Overall frequency response  
Distortion-limited response  
£ -56 dBu  
£ 1 %  
60 Hz … 20 kHz  
(PA nominal -3 dB, kå = 1 %)  
Crosstalk between two channels  
60 Hz … 5 kHz  
³ 80 dB at 1 kHz / ³ 60 dB at 10 kHz  
30  
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  
19" (483 mm) x 3 HU (132 mm) x 345 mm  
340 mm  
max. 400 mm  
22.3 kg  
Colour  
anthracite  
Optional accessories for the DPA 4410:  
NRS 90206 pilot tone surveillance module (for four outputs)  
NRS 90207 ground fault surveillance module (for four outputs)  
NRS 90208 balanced input transformer module (for one input)  
13.  
SPECIFICATIONS OF THE OPTIONAL ACCESSORIES  
13.1  
NRS 90206 pilot tone surveillance module (for four outputs)  
Pilot tone frequency  
19 kHz ±1 %  
Error detection threshold  
Error message output  
£ 12 mV  
collective fault message with READY relay  
13.2  
NRS 90207 ground fault surveillance module (for four outputs)  
Input  
speaker line 20 V / 50 V / 70 V / 100 V  
collective fault message with READY relay  
1000 Veff  
Error message output  
Disruptive strength  
Error detection threshold  
£ 50 kohms  
13.3  
NRS 90208 balanced input transformer module (for one input)  
Response  
Input impedance  
Floating transformation ratio  
Primary winding resistance  
Secondary winding resistance  
20 Hz … 20 kHz  
³ 10 kohms  
1:1  
1420 ohms at 20° C  
1420 ohms at 20° C  
31  

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