Stereo and Ping-Pong Delay for Vocal Width
Vocal mixing · 4 min read
Set different delay times on the left and right — 1/8 on one side, 1/8 dotted on the other. At 120 BPM that is 250 ms and 375 ms. The two sides never line up, so the repeats spread wide around a lead vocal that stays completely mono. High-pass both returns at 400 Hz.
Left / right
250 / 375 MS
1/8 and 1/8 dotted at 120 BPM
The 60-second answer
One delay on a return, 100% wet, with independent left and right times. Left: 1/8 = 60000 / BPM / 2. Right: 1/8 dotted = that x 1.5. Feedback 15–30%. High-pass 400 Hz, low-pass 5–6 kHz. Return level 12–18 dB under the lead. Check in mono before you move on.
Why two different times sound wider than one panned one
Pan one delay and you have moved the repeat, not widened it. Run different times per side and the two channels contain genuinely different events at different moments, so your ear has nothing to correlate. That is uncorrelated width, and unlike a Haas trick or a phase-based widener it does not cancel in mono — the two repeats simply sit next to each other in time.
Why the dotted value against the straight one works so well
A straight 1/8 repeat lands exactly where the beat already is, so it reinforces the grid. A dotted 1/8 is three sixteenth notes long, so it lands between the hits and only realigns with the beat every three beats. Run one on each side and the pattern between them never repeats within a bar, so the ear reads it as space rather than as a rhythm part. The math is simple: 1/8 is 60000 / BPM / 2 and dotted is that number times 1.5. At 140 BPM: 214 ms and 321 ms.
Setting it up, step by step
| # | Do this |
|---|---|
| 01 |
Send, do not insert A 100% wet return keeps the dry vocal mono and gives you EQ and a fader over the repeats. Return: 100% wet |
| 02 |
Different note values per side 1/8 left and 1/8 dotted right is the classic. 1/16 and 1/8 works when the beat is fast. Never the same value both sides. L 1/8 · R 1/8 dotted |
| 03 |
Do the math if the plugin has no sync 1/4 = 60000 / BPM. 1/8 = that / 2. 1/16 = / 4. Dotted = x 1.5. Triplet = x 0.667. At 100 BPM: 600, 300, 150, dotted 1/8 = 450, triplet 1/8 = 200. 60000 / BPM, then divide |
| 04 |
Feedback low, or you lose the pattern 15–30%. High feedback fills the gaps and the two sides blur into a mono-ish wash. Feedback 15–30% |
| 05 |
High-pass the returns at 400 Hz This is the move that makes it work. Repeats carrying the body of the voice fight the lead directly; repeats above 400 Hz never do. HPF 400 Hz · LPF 5–6 kHz |
| 06 |
Check mono and check a phone Uncorrelated delays survive mono well, but a plugin with cross-feed or modulation can still cost you level. Verify rather than assume. Mono drop: under 1 dB |
The trick: high-pass the delay returns at 400 Hz and the repeats stop fighting the lead
Almost every complaint about stereo delay — it is cluttered, it makes the vocal muddy, it fills the mix — comes from one source: the repeats still contain the 150–400 Hz body of the voice. That band is where the lead gets its weight, and copies of it arriving 250 and 375 ms later are direct competition. Put a steep high-pass at 400 Hz on the delay return, ideally 18 or 24 dB per octave. The repeats keep their consonants and presence, which is what carries the sense of space, and lose the part that was crowding the centre. You can now run the return 4–6 dB louder and it will sound wider and cleaner at once. Add a low-pass around 5–6 kHz so each repeat is darker than the dry word, and the delay reads as distance rather than as a second vocalist.
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- Same time both sides. Identical repeats left and right are just a centred mono delay. The width you think you hear is the reverb on the return.
- Ping-pong with heavy feedback. Above 40% the bouncing repeats fill every gap and turn into a wash with a pulse in it.
- Unfiltered returns. Full-range repeats stack in the low mids and make the whole mix feel crowded while the vocal sounds smaller.
- Widening the lead as well. If both the source and the effect are wide, the mix loses its centre and the vocal stops sounding anchored.
Keep going
FAQ
What delay times give the widest vocal?
Different values on each side. 1/8 (60000 / BPM / 2) on one and 1/8 dotted (x 1.5) on the other is the reliable starting point.
Is ping-pong delay mono compatible?
Mostly yes, because the repeats are separate events in time rather than phase-shifted copies. Still check, since some plugins add modulation that does cancel.
Where should I high-pass a delay return?
Around 400 Hz. That removes the part of the repeat that competes with the lead vocal's body and lets you run the return noticeably louder.
Who's behind this
Ivan Meshcheriakov · IvanFromRnD
5+ years ago I moved to LA with zero connections and started building from nothing — 14-hour days, meeting people and interning at studios. It took me 5+ years to meet and interview 100+ Grammy-winning engineers — then I turned it all into the Vocal Chain Bible.
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