Marching band / outdoor parade / DCI mono fold: field, pit, crowd, and announce checklist
Field mics, front ensemble (pit), crowd, and announce beds feel huge in the booth and on stadium wedges. On parade PA, DCI broadcast, or phone livestream, brass body and battery attack often thin or cancel against parallel paths that carry the same energy a few milliseconds later. That is usually polarity, path priority, and a stereo field bed that was never folded before send. Fix path priority and small delays first. Frequency-aware phase repair belongs only after residual L/R fights remain on stereo beds before mono fold.
Download PHIXER free PHIXER hub
PHIXER is free stereo phase-repair (VST3/CLAP/AU · Win/Mac/Linux) from Riverflux Audio. Frequency-aware phase rotation for leftover L/R fights on stereo material. It is not a marching-band compressor, not a widener, and not a substitute for mic placement or mono audition of the PA or broadcast bus. Path priority and polarity first; PHIXER after residual spectral fights.
What marching band / outdoor mono failure sounds like
- Brass body and low battery thin on broadcast. Field and pit share the same energy a few ms apart.
- Stereo field huge in booth, hollow on phone. Hard L/R parade layouts disappear when the platform folds.
- Crowd and announce fight the music bed. Same content twice with different delay into the matrix.
- Stadium PA or parade fold cancels midrange punch. Stereo bed never checked in mono before send.
- Fine in cans / press box, broken for TV / radio / phones. Same destinations as sports / stadium, broadcast / radio / TV, club / PA.
Fast mono audition (about 60 seconds)
- Solo the PA / broadcast / mix bus (not only booth headphones). Flip a utility to mono.
- A/B field muted vs open under pit/crowd. Note what disappears: brass body, battery attack, woodwind detail.
- Solo pairs: field vs pit, music vs crowd, stereo field bed vs mono fold.
- Check correlation on the delivery bus, then with music muted vs full.
Order of operations (before spectral phase rotation)
1. Polarity between field, pit, and crowd paths
Flip field vs pit, or music vs crowd, when body or battery attack return immediately. Guide: polarity vs phase. Related: brass / horn section, sports / stadium.
2. Small delay align spots to the hero field image
Pit and spot mics often arrive earlier or later than the main field array. A few samples of delay (or nudge to the hero field image) often restores body better than any widener.
3. One hero music image to the PA or broadcast bus
Do not send every field, pit, spot, and crowd path all hot into the PA or broadcast. Pick a hero music image (often the main field array), keep extras muted or low. Parallel stacks are classic hollow-body on phone fold. Related: live FOH.
4. Prefer hero field as the body; quieter pit / spot color
Pit and spots should color detail, not replace the hero field for the broadcast mix. If every spot sits at full level under loud field, mono fold almost always hollows body. Pull spots first.
5. Skip wideners and Haas on field beds before fold
Short-delay width and stereo imagers make booth headphones huge and phones hollow. Keep critical low end and battery body centered for PA and broadcast.
6. Only then audition residual L/R spectral fights
If a stereo field bed must stay stereo and fold still hollows a band after the steps above, gentle frequency-aware phase rotation can help. Prove it with mono A/B, rotator bypassed vs engaged.
Path types and typical failure modes
| Path | Common mono failure | First fix |
|---|---|---|
| Field array + pit | Brass body / battery cancel on TV | Polarity; delay; quieter pit |
| Field + crowd | Music disappears under cheer on phone | Path priority; duck crowd |
| Announce + music bed | Voice combs or thins | Separate bus; polarity; levels |
| Stereo field hard L/R | Huge in cans, gone on phone | Center critical lows; simplify width |
| PA / matrix → broadcast | Fine in booth, hollow for viewers | sports stadium / broadcast |
Parade / DCI / stadium checklist (to send)
1. Label field vs pit vs crowd vs announce paths
Name field arrays, pit, spots, crowd, and announce so operators know what hits the PA or broadcast. Ambiguous stacks get left open and comb on fold.
2. Mono-check delivery bus alone, then with full music
Solo brass body and battery in mono. Then open woodwind detail and crowd in mono. Note fights between spot color and hero field.
3. Watch TV, radio, PA, and phone destinations
Most remote viewers and many parade listeners hear mono or near-mono. Guides: sports / stadium, broadcast delivery.
4. Optional null / mono workflow before show
Host-agnostic habit before you go live or print: master bus mono checklist.
When PHIXER belongs on field-related stereo
- The material is already stereo and must stay stereo (stereo field array, stereo pit print), not a mono spot you fake-widened.
- Polarity, delay align, and hero-path levels are cleaned up, but fold still hollows a band of the spectrum.
- You can A/B mono with the plugin bypassed and hear clearer brass body or battery without wrecking the image.
- You are not using it to "fix" unaligned field+pit under crowd, or to replace a time-align edit on the matrix.
Decision table
| You notice… | First try | Why |
|---|---|---|
| Body thins when pit opens under field | Polarity; delay; quieter pit | Arrival-time fight |
| Music + crowd collapse on phone | Hero field; duck crowd; polarity | Stacked identical content |
| Fine in booth, thin on TV / radio | Mono delivery bus; pull spots | Booth ≠ viewer fold |
| Stereo field still cancels by band | PHIXER on that stereo bed | Residual spectral L/R fight |
| Mono field alone is dull | Tone / EQ / gain / mic choice | Not an L/R repair job |
When NOT to use PHIXER here
- You have not mono-auditioned the PA / broadcast / mix bus yet.
- The fix is obviously polarity, delay, one hero field image, or quieter pit under field.
- You want PHIXER to make the band louder, wider, or "more stadium." Wrong job.
- The path is mono and the print problem is balance or EQ.
- See also when not to use PHIXER.
Quick path: Solo delivery bus in mono → polarity field vs pit/crowd → delay-align spots → one hero field image → quieter pit under hero → skip Haas/imagers → mono-check with full music → PHIXER only for leftover stereo cancellation on a field bed → fold again for PA / broadcast / parade send.