Riverflux Audio · Practical · Stereo imager vs phase
Stereo imager vs phase repair
Stereo imagers widen the picture. They can also wreck mono. PHIXER checks and fixes destructive L/R phase before delivery so width tools do not hollow the low end on phones, clubs, and livestreams.
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Different jobs. Imagers push energy into the sides (M/S width, Haas, decorrelation). PHIXER is free stereo phase-repair (VST3/CLAP/AU · Win/Mac/Linux): continuous, frequency-aware phase rotation so more of the low end survives mono. Widen after the fold holds, not instead of fixing phase.
Side-by-side
| Stereo imager / widener | PHIXER (phase repair) | |
|---|---|---|
| Goal | Make stereo feel bigger | Keep more energy when summed to mono |
| Typical move | Boost side, Haas delay, shuffle | Frequency-aware phase rotation |
| Mono risk | Often higher: more side can cancel harder | Built to reduce cancellation |
| Use when | Mix already mono-safe; you want drama in stereo | Stereo layers collapse on mono check |
Why imagers wreck mono
- Headphones lie. Extra side energy sounds exciting until club / phone / BT mono folds L+R and the bass disappears.
- Haas width is delay, not repair. Short delayed copies create width and comb filters. See Haas delay width vs true phase issues.
- M/S boost is not a phase fix. Widening the side can thin the fold even when the mid looks fine. See mid/side vs phase rotation.
- Polarity first, then rotation. A simple Ø flip may clear a dual-mic or DI/cab invert. If one band still scoops, that is continuous rotation territory. See polarity invert vs continuous phase rotation.
Practical order before delivery
- True L+R mono sum on the suspect bus (phones, club, livestream check).
- Polarity / timing hygiene. Flip Ø or nudge a few samples if that is the real issue.
- If the stereo bed must stay stereo and one band still cancels, insert PHIXER. A/B mono before and after.
- Only then add imaging for ear-candy. Re-check mono after every width move.
- If a mono-safe center print is enough, print mono and skip width toys.
Related guides
- PHIXER for Multiband / crossover phase shifts and mono check
- Polarity invert vs continuous phase rotation
- Haas delay width tricks vs true phase issues
- Mid/side processing vs stereo phase rotation
- PHIXER for stereo imager / width tools
- Mono check workflow
- PHIXER for Bus Sidechain / heavy bus compression and sidechain stereo phase
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