Audio
Shure PSM300 troubleshooting
The Shure PSM300 problems live-event techs bring to Ask Roadie most (also called P3T, P3TR, PSM 300). 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 PSM300 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 →
Constant popping / static / crackle in the ears
Likely cause: Most PSM300 popping traces to a marginal earphone cable or a dirty/loose connector; RF-driven crackle is fixed by relocating to a clean channel.
- Step-by-step fixGet the fix →
Distorted / clipping monitor audio at normal volume
Likely cause: PSM300 distortion is usually input overload — wrong Line/Aux setting or input gain too hot.
- Step-by-step fixGet the fix →
Dropouts / short range even though rated for 300 ft
Likely cause: The stock omni antenna radiates in all directions and is easily shadowed by metal/bodies; height, line-of-sight, and directional antennas concentrate usable RF toward the performer, extending reliable range.
- Step-by-step fixGet the fix →
How many PSM300 systems can run at once / coordinating with other wireless
Likely cause: Intermod between many transmitters limits usable channels below the theoretical max; using one coordinated group and separating mic vs IEM bands prevents interference.
- Step-by-step fixGet the fix →
IR sync will not take / receiver will not link to transmitter
Likely cause: IR sync needs an unobstructed short-range infrared line; strong ambient IR (sunlight/LED PARs) can block it.
- Step-by-step fixGet the fix →
No audio in the earphones even though the receiver powers on
Likely cause: Power-save mutes output with no load plugged in; no meter movement means the problem is upstream at the console/input, isolating audio-path vs RF-path faults.
- Step-by-step fixGet the fix →
Only hearing one instrument/side, or want a custom personal blend
Likely cause: MixMode vs Stereo determines what the bodypack knob does; a hard-panned balance or single-input feed explains one-sided monitoring.
- Step-by-step fixGet the fix →
Running multiple bodypacks: syncing a second pack knocks the first off RF
Likely cause: Two receivers that "kick each other off" is almost always two packs expecting different channels, or two TX on one channel.
- Step-by-step fixGet the fix →
Short battery life on the bodypack
Likely cause: Runtime figures are per Shure spec; SB900A gives longer, better-tracked runtime, and power-save reduces idle drain.
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 PSM300
- 1. Pick the Shure PSM300. 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.