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Adastra UM Series - User Manual

Adastra UM Series
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UM-series
Compact 100V mixer-amplifiers
Item ref: UM30 953.173UK
UM60 953.176UK
UM90 953.179UK
User Manual
Version 1.1
Caution: Please read this manual carefully before operating
Damage caused by misuse is not covered by the warranty

Questions and Answers

  • H
    hillmeredithSep 8, 2025
    Why is my Adastra Amplifier overheating or cutting out?
    • J
      jonathan58Sep 8, 2025
      If the Adastra Amplifier is overheating or cutting out, check that 8Ω speakers are not connected to 100V terminals. Ensure the total 100V speaker wattage is lower than the amplifier rating and that 100V and 8Ω speakers are not both connected.
  • L
    Lori ClarkAug 23, 2025
    What to do if Bluetooth cannot connect to Adastra UM?
    • A
      Abigail KempAug 23, 2025
      If you're having trouble connecting a Bluetooth device to your Adastra Amplifier, make sure the sending device is within the Bluetooth range (5-10m). Also, verify that the connected device is the correct ID.
  • L
    Laura PhelpsAug 25, 2025
    What to do if Adastra UM is overheating or cutting out?
    • S
      sfloresAug 25, 2025
      If your Adastra Amplifier is overheating or cutting out, check that 8Ω speakers are not connected to the 100V terminals. Make sure the total 100V speaker wattage is lower than the amplifier's rating. Also, ensure that 100V and 8Ω speakers are not both connected simultaneously.
  • K
    Kevin ThompsonAug 26, 2025
    How to fix microphone feedback from Adastra Amplifier?
    • M
      Molly DayAug 27, 2025
      To reduce feedback from the microphone when using your Adastra Amplifier: Face the microphone away from the speakers and monitors. Additionally, turn down the MIC and/or MASTER level.
  • J
    Juan WilsonAug 27, 2025
    What to do if there is no audio from connected Bluetooth device on Adastra Amplifier?
    • K
      Katherine HendricksAug 27, 2025
      If you're not getting any audio from a Bluetooth device connected to your Adastra Amplifier, first ensure that the volume controls are not turned down on the sending device. Also, check the volume and Play/Pause buttons to ensure Bluetooth is not muted.
  • C
    Caitlin PhamSep 22, 2025
    How to troubleshoot no power LED on the control panel of Adastra Amplifier?
    • M
      mathewwongSep 22, 2025
      If there is no power LED on the control panel of your Adastra Amplifier, ensure the IEC lead, mains switch, and inlet fuse are properly connected and functional. If you're using a 24Vdc power input, check that the battery is charged.
  • P
    pamela66Sep 16, 2025
    What to do if power LED is on but no other LEDs and no output on Adastra UM Amplifier?
    • C
      Cynthia WilliamsSep 16, 2025
      If the power LED is on but no other LEDs and no output on your Adastra Amplifier, check the input signals and the condition of the input connection leads. Also, check that the MASTER, MIC, LINE IN, or MEDIA controls are turned up.
  • P
    Paul MaySep 18, 2025
    Why are power light and output LEDs lighting but no output on my Adastra UM?
    • J
      James MeyerSep 18, 2025
      If the power light and output LEDs are lighting but there is no output from your Adastra Amplifier, check that the speaker output terminals are connected correctly. Also, check that the speakers are working by testing them on another amp if available.
  • B
    ballenSep 7, 2025
    What to do if my Bluetooth cannot connect to Adastra UM Amplifier?
    • D
      Dean Dixon PhDSep 7, 2025
      To troubleshoot Bluetooth connectivity issues with your Adastra Amplifier, first, ensure the sending device is within the Bluetooth range (5-10m). If it's in range, check that the connected device is the correct ID.
  • L
    Lisa BoydSep 4, 2025
    How to fix no power LED on Adastra Amplifier control panel?
    • D
      David HolmesSep 4, 2025
      If there is no power LED on the control panel of your Adastra Amplifier, ensure the IEC lead, mains switch, and inlet fuse are properly connected and functional. If you're using a 12Vdc power input, check that the battery is charged.

Adastra UM Series Specifications

General IconGeneral
InputsRCA
OutputsBinding Post
Power supply230Vac, 50Hz
ProtectionOverload, short circuit
Frequency Response20Hz - 20kHz

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