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Maintronic DPA4.150 Service Manual

Digital power amplifier

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service manual
DPA4.150 Digital Power Amplifier
Version: 21.052019
DigitalPowerAmplifier
Carl-Zeiss-Str. 10-14
97424 Schweinfurt / Germany
DPA4.150
Tel. +49(0)9721-7766 0
Fax. +49(0)9721-7766 18
www.maintronic.de
info@maintronic.de
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Summary of Contents for Maintronic DPA4.150

  • Page 1 DPA4.150 Digital Power Amplifier DPA4.150 DigitalPowerAmplifier Version: 21.052019 Carl-Zeiss-Str. 10-14 Tel. +49(0)9721-7766 0 www.maintronic.de 97424 Schweinfurt / Germany Fax. +49(0)9721-7766 18 info@maintronic.de...
  • Page 2: Safety Instructions

    Safety instructions Make sure to use the correct supply voltage, before operating the unit. Attention! During operation is a dangerous For your own safety, read all instruc- high voltage present at the speaker tions and information in this manual connections. Disconnect the mains carefully before initial operation.
  • Page 3 Safety instructions Always run the mains power cord in a way that it cannot be pinched by objects and that nobody can stum- Waste disposal ble over it. Avoid sharp bends or excessive tension on the mains cord, In accordance with European Directi- particularly at the cable exits.
  • Page 4 230V / 6,3A / M 50-60Hz,750VA OUT 1 OUT 2 OUT 3 OUT 4 maintronic germany DPA4.150 BRIDGE CONNECTIONS ARE ONLY ALLOWED AS SHOWN S.Nr. 0 / 50V / 100V 0 / 50V / 100V 0 / 50V / 100V...
  • Page 5 system parts rear view Controll Input 1/2 Input 3/4 Control +IN 1 +IN 3 CH 1/2 ok - IN 1 - IN 3 CH 3/4 ok +IN 4 +IN 2 SENS auto ON DC ok - IN 2 - IN 4 Pilottone Pilottone AC 230 ok...
  • Page 6: Installation

    Clip Signal Signal VOLUME VOLUME Channel 2 Channel 4 230V AC Fault Clip Fault Clip DPA4.150 Signal Signal VOLUME VOLUME DigitalPowerAmplifier Front view LED-Indicators front: Fault : amplifier block error, see trouble shooting next page On : amplifier block ready...
  • Page 7 installation Connection mono mode - for IN1, IN2, IN3 and IN4 OUT 1 +IN 1 0 / 50V / 100V Signal 1 Input 1 -IN 1 Symmetrical connection Source 100 V / Σ 150 W / 66 Ω +IN 1 (50 V / 16 Ω) -IN 1 Unsymmetrical connection...
  • Page 8 installation Auto-ON: SENS Option 1: Amplifier channels 1-4 can turned-ON when a audio NF signal is present at the inputs. OFF only Always Each channel use the own Input. remote Input signal sensitivity can be adjusted with the SENS-control (4). Sensitivity 7-300mV Option 2: If the SENS-control-encoder is turned to the right position, the amplifier is always ON.
  • Page 9 installation Pilottone: Input 1/2 Input 3/4 Uncontrolled Pilottone without +IN 1 +IN 3 any Filter or Frequency. - IN 3 - IN 1 +IN 4 +IN 2 Use the following contacts: - IN 2 - IN 4 Pilottone plug (7) for IN 1/2 Pilottone Pilottone Pilottone plug (8) for IN 3/4...
  • Page 10 installation Power-Delay-Link: Use the RJ45 sockets for a Sequential-Power-ON of the amplifers with a delay to protect the mains. Link the amplifiers with RJ45 Patch cable. Once a Power-ON request starts, the amplifiers start-up one after the other, approx. 2 seconds per device. Controll Input 1/2 Input 3/4...
  • Page 11 DPA4.150 measuring condition Data Supply voltage AC 220-240 V AC, 50/60 Hz 24V (20 - 28V DC) optional Supply voltage DC 48V (42 - 58V DC) Peakpower 66 Ohm/33 Ohm 100V 4x150W 2x300W (at 230V~ power supply) THD+N...
  • Page 13 block wiring diagram...
  • Page 14: Troubleshooting

    trouble shooting Fault LED glows: The amplifier is to hot (heatsink is over 80°) or a short circuit is present at the loudspeaker outputs LED should turned off after disconnecting the loudspeaker Humming noise: 1: Check Input Ground connectors 2: throught the PE conductor connections of different devices a ground loop can ocure Signal is distorted: 1.
  • Page 15 notes _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________...
  • Page 16: Made In Germany

    MTC maintronic GmbH Tel +49 9721-7766-0 Carl-Zeiss-Str. 10-14 Fax +49 9721-7766-18 97424 Schweinfurt www.maintronic.de Germany info@maintronic.de Made in Germany Mistakes and typing errors reserved. All rights reserved. Documentno.: maintronic_DPA4_150_manual_EN_20161116...