PHIXER for Delay Throws: ping-pong echoes that keep body on mono fold
A hard left/right delay throw feels huge in headphones. On phone playback, Bluetooth, club PA mono, or livestream fold, near-identical repeats can comb and thin the dry vocal. Delay drama and mono safety are different jobs. Redesign the throw first. Free phase-repair helps after residual L/R fights remain on a stereo dry-plus-wet bed you must keep stereo. It is not a delay, and it does not replace a true mono listen on dry plus wet.
Download PHIXER free YouTube tutorial
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 delay, not a widener, not a polarity button, and not a substitute for mono-checking dry plus wet. Redesign the throw before you rotate anything.
Three delay-throw failure modes this page covers
- Ping-pong / hard LR throws under dry vocal. Fine in cans; chest hollows on phone or mono fold. Deep guide: Ping-pong delay throws vs mono.
- Short slap / Haas-ish repeats. Dense near-copies that sit where mono is fragile. Cousin: Haas vs phase repair.
- Reverb / FX return cousin. Dry plus wet near-copies hollow the same way dry plus delay can. Cousin guide: PHIXER for Reverb Returns.
Fast delay-throw mono audition (about 60 seconds)
- Sum L+R on the group bus or master (or monitor controller mono). Listen to vocal chest and lyric presence with the throw engaged.
- A/B stereo vs mono. Note what disappears: chest, shell weight, low-mid body that was actually cancellation.
- Mute the wet return briefly. Flip polarity on the return if it is inverted. Note which combination restores mono weight.
- HPF and darken the wet path. Prefer longer, sparser throws or mono / mid-leaning delays. Confirm on a phone speaker or single earbud path, then again after any bus compressor / EQ / saturation pass.
Honest order of fixes (before spectral phase rotation)
1. True mono listen on dry plus wet
Hard L+R sum or monitor mono with the throw open. Habit: ping-pong delay checklist and mono check workflow.
2. Hero dry path before wet density
Prefer one clear dry hero for body. Wet for motion and space, not as a second stereo width layer that steals Mid from the dry source.
3. HPF / darken and quieter wet
High-pass and darken the delay return so low-mids stay with the dry. Lower send / return level before chasing plugins. Often enough on its own.
4. Less dense LR copies
Prefer timed musical gaps, mono slap, or mid-leaning delays when fold matters. Compare Haas vs phase repair and PHIXER vs stereo imagers.
5. Polarity and latency if a return flips or lags
Inverted hardware insert, flipped send, plugin latency vs dry. Flip Ø when body returns. Align a few samples or ms before spectral tools. Guide: polarity vs phase.
6. Only then audition residual L/R spectral fights
If a stereo dry-plus-wet 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. Watch the YouTube tutorial and the mono demo.
Delay throw path types
| Setup | Common mono failure | First fix |
|---|---|---|
| Ping-pong under vocal | Chest dips when summed | HPF wet; quieter send; mono listen |
| Hard LR slap / short feedback | Haas-ish comb on fold | Longer gaps; less dense copies |
| Stereo delay + imaged return | Side collapses into weaker mid | Reduce Side; mono A/B |
| Reverb / FX cousin | Dry plus wet near-copies | Reverb returns guide |
| Parallel bus cousin | Dry plus smash near-copies | Parallel bus guide |
Reverb returns cousin (short version)
- Dry plus wet hollows the same way dry plus delay near-copies on a stereo bed.
- Polarity and timing still come first. Spectral tools after residual L/R fights only.
- Full write-up: PHIXER for Reverb Returns.
When not to reach for PHIXER
- Wrong polarity on the return (flip Ø first).
- Obvious plugin latency vs dry (align first).
- You only need a quieter or mono-safe throw (HPF / less dense LR / print mono).
- Intentional stereo wash that is meant to thin in mono.
- Honesty list: When not to use PHIXER.