Summary of the content on the page No. 1
OWNER’S MANUAL
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17
19" rack dimensions with 3 HU
ilable pilot tone surveillance module and ground fault surveillance module are optionally ava
off ground potential, balanced input transformer are optionally available
TEST switch for pilot tone surveillance and GROUND FAULT reset
fault message via off potential READY contact
fault indicators: READY and GROUND FAULT
temperature control with PROTECT indicator
MONITOR outputs
3 LED indicators with CLIPPING
Summary of the content on the page No. 2
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 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 IMPORTANT SERVICE INSTRUCTIONS 3 mm 6 mm 18 Note: SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIGINAL PART ONLY) - circuits have to be
Summary of the content on the page No. 3
A 19 rear plate screws (see also paragraph 11) DC INPUT 24 V= 20 CIRCUIT TO CHASSIS switch 19 air outlets 18 POWER OUTPUT connector 17 REMOTE CONTROL connector 16 INPUT 1- 4 routing switch 15 INPUT 1- 4 XLR-type connectors 14 LEVEL 1- 4 input level controls 13 VOLTAGE SELECTOR switch 12 mains fuse 11 AC MAINS INPUT connector 10 POWER on switch 9 air inlets 8 READY indicator 7 GROUND FAULT indicator 6 PROTECT indicator 5 STANDBY indicator 4 TEST button for checking and reset
Summary of the content on the page No. 4
20 48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14. BLOCK DIAGRAM OF THE DPA 4410 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.3 NRS 90208 input transformer 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2 NRS 90207 ground fault surveillance 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1 NRS 90206 pilot tone surveillance 31 . . . . . . . . . . . . . . . . . . . 13. SPECIFICATIONS OF THE
Summary of the content on the page No. 5
GENERAL NOTES The amplifier DPA 4410 has been specially designed to ensure durable performance and rel 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 gene ral music When moving the amplifier from a cold into a warm environment, condensation of its inner parts can PRECAUTIONS AND RECOMMENDATIONS When the appliance is operated with the mains supply, use the inclu
Summary of the content on the page No. 6
the connection of common control pre-amplifiers. In case off ground potential inputs are needed, the Using the ROUTING switch (15) allows parallel operation of the inputs 1 - 4, providing the through OUTPUTS POWER OUTPUT All power outputs are balanced and off ground potential. The outputs are presetted by DYN ACORD for 22 with a load of 4 ohms is possible. ance speakers 70 V, 50 V and 20 V (see also paragraph 8). In the 20 V position, the operation of low imped be changed to into the connection
Summary of the content on the page No. 7
The use of speaker systems with a 100 V matching transformer is recommended to reduce the lack in the connected speaker network has to match the amplifier’s overall output capacity of 10 0 W (with an After switching the output to 20 V, low impedance speaker systems (4 - 16 ohms) can be conn ected to 23 Diagram 4 Connecting low impedance speakers (4 ohms) operation, is possible. pedance Free combination of the DPA 4410’s power output voltages, including mixed 100 V and low im capacity of each
Summary of the content on the page No. 8
Coupling is possible under the following restrictions: only identical amplifiers can be connected. Since of both amplifiers to 50 V (see also paragraph 8), resulting again in 100 V overall output vo ltage. In this The MONITOR outputs (16) provide an unbalanced, low-impedance signal and are meant for t connection of monitoring amplifiers. Since the outputs are of low impedance, the cable length of the or 24 - off potential contact - READY message - single-sided grounding - MONITOR output - clo
Summary of the content on the page No. 9
1 ⊥ 2 ⊥ 3 ⊥ 4 5 ⊥ 7 6 8 9 ⊥ red CLIP LED (2) lights briefly, the maximum distortion-free output is gained. Whenever the C LIP LED 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. Addit ional internal protection is provided by two 25 A miniature fuses, located on the printed board assemb ly 85264 (see . to 100 V. Changing the output voltage to a value of 20 V, 50 V
Summary of the content on the page No. 10
This is achieved by sending an ultra low-level 19 kHz pilot tone through the device. It enters the signal - The printed board assembly has to be inserted into the guides with its printed side point ing to the top, A B C 26 with the inserted modules NRS 90206 and NRS 90207 Printed circuit board 89018.1 Diagram 8 D NRS 90207 NRS 90206 GROUND FAULT DETECTION PILOT TONE DETECTION - Reassemble the appliance following the descriptions under paragraph 8. until it fir
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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 The VDE regulation DIN VDE 0800 has to be obeyed when planning and afterwards operating 100 V Therefore, we recommend for off-ground potential speaker network installations the us e of the ground fault surveill ance module NRS 90207 for automated surveillance of the network insulati on. Error in
Summary of the content on the page No. 12
TO AMP_A 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 FUSES 28 IEC 127 5 x 20 mm T6.3A 250V power-AMP 4 F507 PCB 85264.2 IEC 127 5 x 20 mm T6.3A 250V power-AMP 3 F506 PCB 85264.2 IEC 127 5 x 20 mm T6.3A 250V power-AMP 2 F505 PCB 85264.2 IEC 127 5 x 20 mm T6.3A 250V power-AMP 1 F504 PCB 85264.2 DIN 72581-3 flat-type fuse 25A 32V battery fus
Summary of the content on the page No. 13
25 A F 504 F 505 The battery fuses F 502 and F503 are located on the printed circuit board 85264.2, behind t he AMP the rear cover plate of the appliance have to be detached. Unlock the screws marked as “A” ( see also board or the wiring. The fuses F502 and F503 are now easy to get to (see also diagram 10). Follo w the rear plate, the 4-pole flat cable has to be reconnected to the male multi-point connector B5 02. The top 29 cover plate has to be reattached. he screws of the same procedure in
Summary of the content on the page No. 14
0 0 Pmains [VA]=apparent power Umains*Imains, Pmains [W]=true power, Pout [W]=output power U I P P B B i 0 ≤ ≤ ∑ ≥ ≥ 30 60 dB at 10 kHz 80 dB at 1 kHz / Crosstalk between two channels 60 Hz … 5 kHz = 1 %) (PA nominal -3 dB, k Distortion-limited response 60 Hz … 20 kHz Overall frequency response 1 % THD at PA nominal -56 dBu Noise voltage (A-weighted) ——— ——— 4 Ohm/ 6250 nF 20 V Output ——— ——— 25 Ohm / 1000 nF 50 V Output ——— ——— 50 Ohm / 500 nF 70 V Output 50 Ohm / 500 nF 50 V + 50
Summary of the content on the page No. 15
≤ ≤ ≥ 31 1420 ohms at 20° C Secondary winding resistance 1420 ohms at 20° C Primary winding resistance 1:1 Floating transformation ratio 10 kohms Input impedance 20 Hz … 20 kHz Response 13.3 NRS 90208 balanced input transformer module (for one input) 50 kohms Error detection threshold 1000 Veff Disruptive strength collective fault message with READY relay Error message output speaker line 20 V / 50 V / 70 V / 100 V Input 13.2 NRS 90207 ground fault surveillance modu
