Audio
Meyer Sound UPJ-1P troubleshooting
The Meyer Sound UPJ-1P problems live-event techs bring to Ask Roadie most (also called UPJ, UPJ-1XP, UPJunior). Pick your symptom, or describe your own in plain words, and get the likeliest fix first, with the manual page when there is one.
Common UPJ-1P errors & problems
What techs run into most, and what's usually behind it. The step-by-step fix for your exact unit is in Ask Roadie.
- Step-by-step fixGet the fix →
Audio is distorted/compressed but the yellow limit LED is NOT lit
Likely cause: If the box is not limiting, the distortion is entering on the input.
- Step-by-step fixGet the fix →
Audio is highly compressed / squashed and a yellow limit LED stays lit continuously
Likely cause: The peak/RMS limiters protect the drivers by capping level; continuous limiting means you are asking for more SPL than one UPJ-1P can deliver.
- Step-by-step fixGet the fix →
Hum or noise from the loudspeaker
Likely cause: Disconnect test cleanly separates internal vs external noise.
- Step-by-step fixGet the fix →
On/Temp LED does not illuminate and there is no audio (unit appears dead)
Likely cause: The Intelligent AC supply only turns on between 90 and 264 V AC; a wrong/loose PowerCon or out-of-range mains prevents turn-on.
- Step-by-step fixGet the fix →
Poor/uneven coverage or thin sound when arrayed, or when paired with USW-1P/650-P subwoofer
Likely cause: The rotatable VariO horn tailors the 80x50 pattern to the plane you need; matched polarity keeps the low end from cancelling at crossover.
- Step-by-step fixGet the fix →
RMS remote monitoring: loudspeaker not appearing / Service LED blinking once every ~2 seconds
Likely cause: RMS identifies boxes by commissioned Node Name; an uncommissioned but wired box shows the 2 s Service blink.
Not on the list? Describe it your way, or paste the error code off the display. Ask Roadie works the problem with you until it's fixed or you have a clear next move.
How Ask Roadie helps with the UPJ-1P
- 1. Pick the Meyer Sound UPJ-1P. It's already in the list.
- 2. Describe what you're seeing. In your own words, or the error code off the screen.
- 3. Get the likeliest fix first. Steps in order, the manual page when there is one, and a note when other techs have confirmed it.
- 4. Still broken? Tap 👎 and it keeps going from where you left off.