Headrush Dynamics & EQ
Graphic EQ
Inspired by Avid® Custom Graphic EQ (Eleven Rack)
It is a simplified 5-band graphic equalizer, faster than the 8-band G EQ designed for quick live interventions or general shaping.
GENERAL FUNCTION
Change the sound via 5 fixed bands.
Each band controls a large portion of the spectrum.
Ideal for:
- quick fixes
- adaptation to PA
- overall tonal control
Less precise than parametric EQ, but very intuitive.
Control Parameters
FREQUENCY BANDS
Each band:
- Typical range: −12 → +12 dB
- Fixed frequencies (non-adjustable)
Low GaindB
- Area: ~80–120 Hz
Function:
- check the lows
Effect:
- boost → more body
- cut → less boom
Low Mid GaindB
- Area: ~200–400 Hz
Function:
- check the “mud”
Effect:
- boost → warm but closed sound
- cut → more cleaning
Mid GaindB
- Area: ~500Hz – 1kHz
Function:
- central averages
Effect:
- boost → “nasal” presence
- cut → more open sound
High Mid GaindB
- Area: ~1.5 – 3 kHz
Function:
- definition / intelligibility
Effect:
- boost → clearer voice
- cut → less aggressive
High GaindB
- Area: ~5 – 10 kHz
Function:
- high frequencies
Effect:
- boost → brilliance / air
- cut → less harsh
GaindB
- Range: approximately −12 → +12 dB
- Global EQ volume
Compensates for volume changes
Pro Tips
- wide bands → less surgical interventions
- excessive boosts → artificial sound
- small movements are better (±2–4 dB)
Use for:
- quick fix
- not for extreme precision
Correct order:
- size low-mid (clean)
- add high-mid (definition)
- adjust low/high for balance
Quick Reference
- Low Gain: low
- Low Mid Gain: low-mid / mud
- Mid Gain: mediums
- High Mid Gain: presence
- High Gain: high
- Gain: output volume
Setup Examples
Live voice
Low−2 dB
Low Mid−3 dB
High Mid+2 dB
High+2 dB
Clear and clean
Acoustic guitar
Low−2 dB
Low Mid−2 / −4 dB
High+2 dB
Natural
Anti-feedback
- identifies problem area
- corresponding band cut (−4 / −8 dB)
Warm sound
Low+2 dB
Low Mid+1 dB
High−2 dB
Softer