Products Pro-Audio ELA amplifiers DPA-series - digital 100V

DPA amplifier series

digital 100V - ELA amplifiers - DPA series

Less battery capacity
90% block efficiency
Fanless cooling system
maintenance-free
Monitoring contacts
Only 9W in standby mode
Only 260mm installation dept
Digital signal processing

digital 100V - ELA amplifier

Our digital 100V amplifiers are durable and high quality brand-name products for professional ELA systems according to DIN EN 60849 / VDE 0828. A very reliable electronic design guarantees an uncompromisingly transmission quality ensures trouble-free operation. Very low waste heat, 90% block efficiency due to digital signal processing plus remote interface with ...


Functions

 

+ remote monitoring
+ backup power
+ 100V technique

Sound- and levelcontrol for each channel easily accessible recessed in the front. All operating conditions displayed with LED.

The cooling system works without a fan:

  • maintenance-free
  • no soiling

 

Features:

  • Control LED´s for all signal- and operating conditions
  • monitoring contacts for the battery
  • monitoring contacts for the amplifier
  • 1 and 2 channel in a 2RU 19" housing
  • only 260mm installation dept
  • all supplys stucked with detachable screw clamps

 

  • electronically balanced inputs with optional transducer
  • automatic standby mode
  • protection circuits against no-load, short circuit, overheating, DC
  • power supply 230V AC mains and 48V DC
  • switch on delay

 


 

Power supply 230V AC:

When the mains loss detection the amplifier turns automatically to emergency battery power. Displayed through a front LED.

Protection circuits:

Automatic shutdown at overheating of the amplifier, limiting of the power output and automatic shutdown at overload or short circuit of the loudspeaker-lines.

Cooling:

The cooling has been designed to ensure a ventilation from the front to the left and right side. These construction allow a fanless cooling system which is maintenance-free.

Inputs:

The power amplifier is equipped with two electronically balanced inputs for each channel (with optional transducer). One input is external switchable.

Outputs:

50-100V potential-free

Monitoring contacts:

reports via optocoupler:
2x amplifier block OK
DC energy supply OK

Remote Power On:

A signal at the NF-Input >50dBm (70Hz-20kHz) leads to an immediate activation of the amplifier. After deactivating of the Signal, the amplifier turn off with a delayed time.

Installation:

19" 2 RU for cabinet- or rackmounting
An assembly one upon the other entail no reduced performance.

 

 

Technical Data

ELA 100V amplifier - DPA250 / DPA500

ELA amplifier 100V digital - DPA250 / DPA500 - back view connections

 

Connections:

  • (1) IEC plug - power supply 230V A
  • (2) DC-In plug-in screw terminal block 2 pin
  • (3) Loudspeaker outputs 50 / 100V plug-in screw terminal block 2 pin input socket plug-in screw terminal block 12 pin
  • (4) Symmetrical inputs
  • (5) Switch channel 2
  • (6) Monitoring contacts for faulties or dysfunction of the amplifier
  • (7) Pilot tone signal input
  • (8) Fault alarm output for absentee emergency power supply

 

Specifications

measuring condition

DPA250

DPA 500
stereo

DPA500
mono

Power (RMS)
(at 230V~ power supply)

40 Ohm/100V

1x250W

2x 250W

1x500W
20Ohm/100V

Supply voltage DC

48V DC

1x240W

2x 240W

1x480W

THD+N

1kHz 200W

0.29%

Frequency response 

-3dB

90Hz – 20kHz

Input sensitivity

70Hz – 20kHz

1V eff

Input impedance

1kHz

10Kohm

Signal-to-noise ratio

1kHz; 250W; Vol 0.5

85dB

Electronically balanced inputs

2 inputs for each channel input 2 switched on if needed

Optional transducer potential-free

Starting current 

230V AC

11A with NTC recovery time 70 sec.

Starting current with
R 10Ohm optional

230V AC

5A (500mS)
with R  recovery time 1 sec.

Power consumption

standby 24V DC

0,32A

0,43A

0,43A

 

standby 48V DC

 

0.10 A

0.10 A

 

standby 230V AC

0,045 A

0.058 A

0.058 A

Without signal

2Ch active, 24 DC

0,5 A

0.8 A

0.8 A

Without signal

2Ch active, 48V DC

 

0.25 A

0.25 A

Without signal

2Ch active, 230V AC

0,08A

0.14 A

0.14 A

Full load

24V DC   sine signal

15A

26 A

26 A

Full load 

48V DC   sine signal

 

13.A

13 A

Full load

230V AC  sine signal  100V  40 Ohm

1,7A 

4 A

4 A

Dimension

19“ 2HE  (482x88x256 mm)

Weight

 

12,5kg

16,5 kg

16,5kg

Power loss 100% full load

 

140W   

320W

 

Power loss 50% load

 

75W

171W

 

Power loss standby

 

9W

12W

 

 

 

Circuit layout

Circuit layout for ELA 100V Amplifier DPA250 / DPA500

 

click the image for a larger view.

ELA amplifier 100V digital - DPA250 / DPA500 - Circuit layout

 

 

 

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