Audio
Meyer Sound MM-4XP troubleshooting
The Meyer Sound MM-4XP problems live-event techs bring to Ask Roadie most (also called miniature loudspeaker, MM4XP). 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 MM-4XP 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 →
LED flashing red
Likely cause: Flashing red indicates input overload of the onboard class-D amp; lowering input removes the clip condition.
- Step-by-step fixGet the fix →
LED goes solid red at power-up and audio is muted (no output)
Likely cause: Solid red + mute after power-up is the MM-4XP fault state; it will not pass audio until serviced.
- Step-by-step fixGet the fix →
LED solid green
Likely cause: Green is the healthy operating indication on the MM-4XP status LED.
- Step-by-step fixGet the fix →
LED solid red but speaker still passes audio at reduced level
Likely cause: Long/thin cable causes a voltage drop; below 25 V DC the MM-4XP flags red and SPL/response suffer even though it keeps playing.
- Step-by-step fixGet the fix →
LED turns solid yellow and output drops about 6 dB
Likely cause: The MM-4XP lowers its limiter threshold when the heatsink overheats to prevent damage; cooling clears it automatically.
- Step-by-step fixGet the fix →
No sound / no power to the speaker at all
Likely cause: The MM-4XP has no local power; it relies entirely on 48 V DC from the MPS over the same cable that carries audio.
- Step-by-step fixGet the fix →
Thin/no low end from the MM-4XP
Likely cause: The 4-inch driver rolls off below ~120 Hz by design; a sub covers the LF the mini cannot.
- Step-by-step fixGet the fix →
Weak or distorted output on long cable runs
Likely cause: Lower voltage at the speaker compromises peak SPL and, in some cases, frequency response; correct gauge and resistance restore full output.
- Step-by-step fixGet the fix →
Which power supply and cable / how many MM-4XP per supply
Likely cause: Matching the supply model to the correct cable connector and knowing per-unit current draw prevents miswiring and channel overload.
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 MM-4XP
- 1. Pick the Meyer Sound MM-4XP. 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.