Audio
Meyer Sound 1100-LFC troubleshooting
The Meyer Sound 1100-LFC problems live-event techs bring to Ask Roadie most (also called 1100 LFC). 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 1100-LFC 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 →
Active LED does not turn solid green and/or no audio ~10 seconds after power-on
Likely cause: Startup sequence mutes audio, spins the primary fan, ramps the PSU, then sets the Active LED solid green to indicate unmuted/ready.
- Step-by-step fixGet the fix →
Audio suddenly mutes during heavy/loud use, fans running at full
Likely cause: Forced-air cooling (3 primary + 3 reserve ultra-high-speed fans) pulls air over the heat sinks; the 95 C mute / 86 C unmute thresholds protect the amp and transformer from thermal damage.
- Step-by-step fixGet the fix →
Hum or buzz from the subwoofer
Likely cause: Pin 1 ties to earth through a 1 kOhm/1000 pF/15 V clamp giving a virtual ground lift for audio while bleeding unwanted signals; breaking or shorting that path creates ground loops.
- Step-by-step fixGet the fix →
LF Limit LED is lighting up - is the sub in trouble?
Likely cause: The single limiter engages both channels when a safe power level is exceeded; brief flashes are headroom management, but sustained illumination means the driver protection is holding output back (hard limiting).
- Step-by-step fixGet the fix →
Loudspeaker does not appear in Compass RMS / RMS Activity LED not flashing
Likely cause: RMS monitoring rides on pins 4/5 of the 5-pin audio connector; the Activity/Service LED states report network-install status, distinguishing a wiring/install problem from a hardware fault.
- Step-by-step fixGet the fix →
Sub seems to lose output / limits earlier than usual when it has been running hot
Likely cause: The firmware reduces limiter threshold as a thermal safeguard; the apparent output loss is protection, not a fault.
- Step-by-step fixGet the fix →
Unit is silent for the first several seconds after powering on
Likely cause: The controlled soft-start protects the drivers and PSU from inrush; audio is intentionally muted until the supply is stable.
- Step-by-step fixGet the fix →
Weak low end / poor coupling or cancellation across an array of 1100-LFCs
Likely cause: LF summation depends on matched polarity between adjacent cabinets; one flipped box partially cancels output.
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 1100-LFC
- 1. Pick the Meyer Sound 1100-LFC. 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.