Gamelan / Indonesian gong-chime ensemble multi-mic phase: metallophone and gong spots vs OH and room fold
Close spots on saron, gender, bonang, and gongs feel huge and bronze in the booth and in cans. On phone speakers or YouTube mono fold, body, Mid, and strike attack often thin or cancel against stereo OH and room paths that carry the same strike a few milliseconds later. That is usually polarity and arrival time between spots and shared beds, plus a stereo bed that was never folded before send. Fix polarity and small delays first. Frequency-aware phase repair belongs only after residual L/R fights remain on stereo beds before mono fold. Distinct from steelpan, handpan, and general hand-drum percussion: this page is about Indonesian gamelan / gong-chime ensembles alone. Cross-links: marimba, steelpan, percussion, kalimba.
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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 compressor, not a widener, and not a substitute for mic placement or mono audition of the stream or mix bus. Polarity and timing first; PHIXER after residual spectral fights.
What gamelan / gong-chime phase failure sounds like
- Bonang or gender shimmer huge in cans, thin on phones. Close kettle/bar mics share the same strike a few ms apart from shared OH or room.
- Gong ageng / kempul body hollow on YouTube. Spot + stereo bed + room stack cancels Mid when the platform folds.
- Saron / demung attack present in booth, gone on phone. Hard L/R across metallophone rows collapse on mono fold.
- Kendang dual-head punch vs ensemble bed fight. Drum spots and gong-chime OH share energy without polarity hygiene.
- Fine in headphones, broken for remote viewers. Same destinations as YouTube / social mono, OBS livestream, marimba / mallets.
Fast mono audition (about 60 seconds)
- Solo the stream / mix bus (not only booth headphones). Flip a utility to mono.
- A/B metallophone and gong spots muted vs open under stereo OH and room. Note what disappears: body, Mid, attack, shimmer sustain.
- Solo pairs: saron vs gender, gong spot vs OH, kendang vs ensemble bed.
- Check correlation on the delivery bus, then with the full gamelan muted vs open.
Order of operations (before spectral phase rotation)
1. Polarity between spots and shared OH / room
Flip kettle/bar spots vs stereo OH, or gong spot vs room, when body or Mid return immediately on a clear strike. Guide: polarity vs phase. Cousins: marimba / mallets, steelpan, hand drums.
2. Small delay align secondary paths to the hero strike image
OH and room often arrive later than close metallophone or gong spots. A few samples of delay on the secondary often restores body better than EQ for "more bronze."
3. One hero gamelan image to the stream or mix bus
Do not send every kettle, bar, gong, and OH all hot into the livestream or print. Pick a hero Mid-safe bed (often a focused stereo OH plus selective spots), keep extras muted or low. Parallel stacks are classic thin-gamelan on phone fold. Related: overhead & room.
4. Prefer hero metallophone / gong as the tone; quieter color spots
Secondary closes should color proximity and instrument identity, not replace the hero image for the stream mix. If every close sits at full level under a loud OH, mono fold almost always hollows the bronze.
5. Skip wideners and Haas on gamelan beds before fold
Short-delay width and stereo imagers make booth headphones shimmer and phones hollow. Keep critical low-mid and gong body centered for stream and print.
6. Only then audition residual L/R spectral fights
If a stereo 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 |
|---|---|---|
| Metallophone spots + stereo OH | Body / Mid cancel on stream | Polarity; delay secondary; quieter secondary |
| Gong spot + room / OH | Hollow fundamental, thin shimmer | Polarity + timing; hero Mid-safe path |
| Kendang spots + ensemble bed | Punch vs bed fight on phone | Polarity + delay; hero image |
| Stereo pair hard L/R across rows | Huge in cans, thin on phone | Center critical lows; simplify width |
| Board / matrix → OBS / YouTube | Fine in booth, hollow for viewers | OBS livestream / YouTube mono |
Studio / livestream checklist (to send)
1. Label spots vs OH vs room vs board
Name saron/gender/bonang spots, gong spots, kendang, stereo OH, and room so operators know what hits the livestream or print. Ambiguous stacks get left open and comb on fold.
2. Mono-check delivery bus alone, then with full ensemble
Solo body and Mid in mono. Then open attack and shimmer sustain in mono. Note fights between secondary color and hero bed.
3. Watch phone, YouTube, and social destinations
Most remote viewers hear mono or near-mono. Guides: YouTube / social mono, OBS livestream, TikTok / Reels / Shorts.
4. Re-check after stand / rack / seating moves
Instrument layout and mic height change distance and bleed. Flip polarity again after you move stands, change OH height, or re-seat the ensemble.
When PHIXER helps
- The material is already stereo and must stay stereo (stereo OH, stereo room or board print), not a mono close 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 body or Mid without wrecking the image.
- You are not using it to "fix" unaligned spot+OH under room, or to replace a time-align edit on the matrix.
Decision table
| You notice… | First try | Why |
|---|---|---|
| Body thins when OH opens under spots | Polarity; delay secondary; quieter secondary | Arrival-time fight |
| Gong + room harsh and hollow | Polarity; timing; hero Mid-safe path | Dual-path spot + room |
| Fine in booth, thin on phone | Mono delivery bus; pull extras | Booth ≠ viewer fold |
| Stereo bed still cancels by band | PHIXER on that stereo bed | Residual spectral L/R fight |
| Mono metallophone 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 stream / mix bus yet.
- The fix is obviously polarity, delay, one hero image, or quieter secondary under spots/OH.
- You want PHIXER to make the gamelan louder, wider, or "more bronze." 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 spots vs OH/room → delay-align secondary → one hero image → quieter extras under hero → skip Haas/imagers → mono-check with full gamelan → PHIXER only for leftover stereo cancellation on a stereo bed → fold again for stream / studio print.
Related guides
- Marimba / vibraphone / mallet multi-mic phase
- Steelpan / steel drum multi-mic phase
- Percussion / hand drums multi-mic phase
- Handpan / hang drum multi-mic phase
- Kalimba / mbira / thumb piano multi-mic phase
- Overhead & room mic phase
- Polarity vs phase rotation
- When not to use PHIXER
- YouTube / social mono fold checklist
- Twitch / OBS livestream mono fold
Watch
- PHIXER tutorial + how it sounds (walkthrough with audio examples)