Syd For Solen Live Audio Console Valbyparken Acoustics

Lorde "Shapeshifter" Stage Propagation & Cardioid Array Rig

          FOH SPL (40m)
          98.2 dB
        

Main Stage Array 102.4 dB

Delay Tower Sync 68.5 ms

Vocal STI Index 0.78 STI

Perimeter (Lawn) 74.6 dB

VALBYPARKEN AMPHITHEATRE FIELD

SUB: CARDIOID GRADIENT

Main Array

Sub-Bass Wave

Delay Towers (45m)

Front of House (FOH)

✓ Optimal vocal clarity with low-end rear stage cancellation

Festival Presets

Speaker Arrays & Subwoofers

Stage Main Array Level 102.4 dB

Delay Tower Position 45 m (68.5 ms)

Sub-Bass Directivity

Vocal Stem EQ & FX ("Shapeshifter")

Vocal Presence Boost (3.8 kHz) +4.5 dB

Vocal Delay Tap (ms) 240 ms

Reverb Decay (Amphitheatre) 2.2 s

Atmosphere & Wind Drift

Wind Velocity 4.2 m/s

Wind Direction 135° (SE)

Cardioid Subwoofer Array

By phase-inverting and delaying the rear subwoofers relative to the front row, acoustic energy destructively interferes behind the stage (protecting performers from low-end rumble) while constructively adding 3dB toward the crowd.

Delay Tower Time Alignment

Sound travels at ~343 m/s at 20°C (1.1 ms per foot). Speakers positioned 45m out into Valbyparken require an exact 68.5ms electronic delay + Haas precedence window so the wavefront seamlessly aligns without comb filtering.

Vocal Intelligibility (STI)

Pop vocals in outdoor amphitheaters depend on high-frequency presence around 3.8 kHz to cut through sub-bass masking. Atmospheric high-frequency air absorption is calculated alongside crowd absorption damping.

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