PA DM550

550W Modular Amplifier – 48Vdc secondary Emergency power supply

Modular Professional Power Unit 250W – 70/100V. This new series of audio power amplifiers was designed to fulfil an evolving market in the most flexible and professional manner. The new range responds to precise operating criteria and was designed and tested to guarantee total reliability of use, also with continuous operation. Thanks to the use of power supply switching with SMPS (switch mode power supply) technology and to the constant voltage output 70/100V obtained electronically without transformers, it was possible to design the amplifier in only one rack unit, succeeding in containing the weight and size. La serie DM Power è stata concepita per essere installata in cestello rack 19” 3U in grado di accogliere n° 8 moduli affiancati.

FEATURES

  • Modular Professional Power Unit 550W 70/100V
  • Speaker short-circuit and overload protection circuit
  • Multi-Level Protection and Self Fault Recovery
  • Energy Saving Circuit
  • On Board DSP
  • LED indicators
  • Master Level control
  • Low and high tone adjustment
  • PA-HF Filter with rear switch
  • VOX threshold adjustment
  • MIC/Line input gain adjustment
  • Balanced Line Input on Euroblock terminal
  • Priority Mic/Line Balanced Input on RJ45 socket
  • Two selectable outputs at Constant voltage (70/100V) on Euroblock terminal
  • 48Vdc emergency power supply
  • Maximum 8 modules in a rack case MDA8C (3U rack 19”)

Technical specifications

Model series “DM.POWER”  DM550
Constant voltage speaker output  100V – 70V selectable
Max Output power RMS @100V  550W
Minimum Load Impedanc 18.2 Ohm
Frequency response  50Hz ÷ 20KHz ±3db 440Hz ÷ 20KHz ±3db (selectable)
S/N Ratio  > 110 dbA (20Hz ÷ 20KHz)
Distortion (THD+N)  < 0,05 dbu (1W ÷ Max Power)
Input Impedance  10KΩ
Input Sensitivity (mV)  100÷1000 (Priority Input) – 550 (Line Input)
Maximum Input Voltage (V)  5.50 Vp-p / +8.0 dBu
DSP audio processing  24bit 48Khz, Volume control, Mic Gain control, Soft-VOX, Tone controls
AC POWER SUPPLY
Input Voltage (V~)  230VAc (+10% / -15%)
Input Frequency (Hz)  50 / 60 ± 10%
Max Average Input Current  1.9A (pink noise, max load)
DC POWER SUPPLY
Input Voltage (Vdc) 48V.DC nominal 42,0 ÷ 55,0 Vdc
No-Signal current consumption  50mA
Max Average Input Current  13.0A (pink noise, max load)
INPUT/OUTPUT CONNECTORS
Primary power supply (V~ )  IEC panel connector
Auxiliary power supply (V.-/+ dc)  Polarized panel connector
Speaker Output  Terminal block (Euroblock)
Signal Input  Terminal block (Euroblock)
MIC Input  Polarized panel connector/ RJ45
Std-By  Terminal block (Euroblock)
CONTROLS & INDICATORS
Indicators  ON/Std-By, Signal/Clip/Limit, Protect/Temp
Controls  Master Volume, HF, LF, 440Hz Cut, Mic Gain, Vox Gain, Std-By
PROTECTION
Speaker overload protection  Current limiter
Speaker short-circuit protection  Output Disconnection
Thermal management  Fan Speed, output signal attenuation, output disconnection
DC power protection  Fuse, polarity inversion
Mains power protection  Fuse
Mains power Spike protection  480 Joules, 2ms
Clipping protection  DSP based amplitude limiter
GENERAL DATA
Audible Noise (dB@1mt)  < 40
Operating temperature (°C)  -5 ÷ 40
Relative humidity (%)  < 95 (non-condensing)
Dimensions (LxHxP) (mm)  116 x 53 x 367
Weight (kg)  2,15
PROEL-COMMERCIAL-AUDIO-300x300-1
PA DM550
550W Modular Amplifier – 48Vdc secondary Emergency power supply

Modular Professional Power Unit 250W – 70/100V. This new series of audio power amplifiers was designed to fulfil an evolving market in the most flexible and professional manner. The new range responds to precise operating criteria and was designed and tested to guarantee total reliability of use, also with continuous operation. Thanks to the use of power supply switching with SMPS (switch mode power supply) technology and to the constant voltage output 70/100V obtained electronically without transformers, it was possible to design the amplifier in only one rack unit, succeeding in containing the weight and size. La serie DM Power è stata concepita per essere installata in cestello rack 19” 3U in grado di accogliere n° 8 moduli affiancati.

FEATURES

  • Modular Professional Power Unit 550W 70/100V
  • Speaker short-circuit and overload protection circuit
  • Multi-Level Protection and Self Fault Recovery
  • Energy Saving Circuit
  • On Board DSP
  • LED indicators
  • Master Level control
  • Low and high tone adjustment
  • PA-HF Filter with rear switch
  • VOX threshold adjustment
  • MIC/Line input gain adjustment
  • Balanced Line Input on Euroblock terminal
  • Priority Mic/Line Balanced Input on RJ45 socket
  • Two selectable outputs at Constant voltage (70/100V) on Euroblock terminal
  • 48Vdc emergency power supply
  • Maximum 8 modules in a rack case MDA8C (3U rack 19”)
Model series “DM.POWER”  DM550
Constant voltage speaker output  100V – 70V selectable
Max Output power RMS @100V  550W
Minimum Load Impedanc 18.2 Ohm
Frequency response  50Hz ÷ 20KHz ±3db 440Hz ÷ 20KHz ±3db (selectable)
S/N Ratio  > 110 dbA (20Hz ÷ 20KHz)
Distortion (THD+N)  < 0,05 dbu (1W ÷ Max Power)
Input Impedance  10KΩ
Input Sensitivity (mV)  100÷1000 (Priority Input) – 550 (Line Input)
Maximum Input Voltage (V)  5.50 Vp-p / +8.0 dBu
DSP audio processing  24bit 48Khz, Volume control, Mic Gain control, Soft-VOX, Tone controls
AC POWER SUPPLY
Input Voltage (V~)  230VAc (+10% / -15%)
Input Frequency (Hz)  50 / 60 ± 10%
Max Average Input Current  1.9A (pink noise, max load)
DC POWER SUPPLY
Input Voltage (Vdc) 48V.DC nominal 42,0 ÷ 55,0 Vdc
No-Signal current consumption  50mA
Max Average Input Current  13.0A (pink noise, max load)
INPUT/OUTPUT CONNECTORS
Primary power supply (V~ )  IEC panel connector
Auxiliary power supply (V.-/+ dc)  Polarized panel connector
Speaker Output  Terminal block (Euroblock)
Signal Input  Terminal block (Euroblock)
MIC Input  Polarized panel connector/ RJ45
Std-By  Terminal block (Euroblock)
CONTROLS & INDICATORS
Indicators  ON/Std-By, Signal/Clip/Limit, Protect/Temp
Controls  Master Volume, HF, LF, 440Hz Cut, Mic Gain, Vox Gain, Std-By
PROTECTION
Speaker overload protection  Current limiter
Speaker short-circuit protection  Output Disconnection
Thermal management  Fan Speed, output signal attenuation, output disconnection
DC power protection  Fuse, polarity inversion
Mains power protection  Fuse
Mains power Spike protection  480 Joules, 2ms
Clipping protection  DSP based amplitude limiter
GENERAL DATA
Audible Noise (dB@1mt)  < 40
Operating temperature (°C)  -5 ÷ 40
Relative humidity (%)  < 95 (non-condensing)
Dimensions (LxHxP) (mm)  116 x 53 x 367
Weight (kg)  2,15

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