Question 1

What is the biggest mistake people make with system EQ?

Accepted Answer

The biggest mistake is over-EQing: using too many filters with too much gain to try to make the frequency response perfectly flat at one measurement position. This leads to: excessive amplifier power consumption (boosts require power), increased distortion (boosted frequencies are driven harder), unnatural sound (a perfectly flat response at one seat means irregular response at all other seats), and a brittle, fatiguing sound quality. A well-tuned system should have a smooth, gently contoured response that looks correct on a 1/3 octave display. The goal is ±3 dB from the target curve, not ±0.5 dB. SonaVyx AI diagnostic recommends conservative corrections and warns against excessive boost or too many narrow filters.

Question 2

Why should I avoid boosting more than 6 dB with EQ?

Accepted Answer

Boosting requires the amplifier to deliver more power at the boosted frequencies. A 6 dB boost means 4 times the power. A 10 dB boost means 10 times the power. This can drive the amplifier into clipping, exceed the speaker power handling at those frequencies, and reduce the system headroom for transients. Additionally, large boosts amplify noise and any measurement error at those frequencies. If your system needs more than 6 dB of boost anywhere, there is a fundamental problem that EQ cannot solve: the speaker may be deficient in that range, the room may have a severe null, or the speaker placement may be causing cancellation. Address the root cause instead of boosting. SonaVyx EQ recommendations cap boosts at 6 dB and suggest alternative solutions for larger deviations.

Question 3

What does it mean to chase nulls with EQ and why is it bad?

Accepted Answer

Chasing nulls means applying narrow boosts to try to fill dips caused by acoustic cancellation (reflections, room modes, or multi-speaker interference). The dips are position-dependent: moving the microphone 30 cm may shift the null to a different frequency. Boosting at one position creates a peak at adjacent positions. The boost requires significant power and drives the speaker harder at that frequency. Worse, if the null shifts with temperature, humidity, or audience attendance changes, the boost becomes a peak under different conditions. Instead: verify that the dip appears at multiple positions (if it does not, it is a room artifact). If it does, investigate the cause (reflection, speaker cancellation) and address it physically. SonaVyx spatial averaging across multiple positions reveals which features are consistent and which are position artifacts.

Question 4

Why do narrow-band EQ corrections often sound worse than doing nothing?

Accepted Answer

Narrow parametric EQ (high Q values like 8-15) introduces ringing in the time domain. The filter takes time to build up and decay, smearing transients. A narrow 6 dB cut at Q=10 creates a ringing artifact at that frequency that is audible on percussive material. Additionally, narrow corrections are very position-sensitive: move the listener 50 cm and the correction may align with a different part of the room response, creating a new problem. The human auditory system integrates energy over roughly 1/3 octave bands, so very narrow corrections are partially masked by the surrounding frequency content. Use narrow Q values (above 6) only for feedback suppression where the alternative (feedback squealing) is much worse. SonaVyx AI diagnostic uses moderate Q values for tonal corrections and reserves high Q for specific problems.

Question 5

Is it a mistake to EQ before fixing physical and alignment issues?

Accepted Answer

Yes. EQ should be the last step in system optimization, not the first. Before EQ: verify that all speakers are working correctly (no blown drivers, correct polarity). Time-align all speakers at the crossover frequencies. Verify crossover settings and levels. Optimize speaker aiming for coverage uniformity. Add acoustic treatment where needed. Each of these steps changes the frequency response, so EQ applied before them may become invalid. EQ applied to compensate for a misaligned subwoofer will make things worse when the sub is eventually aligned correctly. SonaVyx workflow guides enforce this sequence: system check, alignment, problem detection, and treatment calculator before EQ recommendations.

Question 6

What happens if I apply EQ based on a single measurement position?

Accepted Answer

A single measurement position captures both the system response and the room response at that specific point. Room modes, reflections, and interference patterns create position-dependent features. EQing from a single position risks: cutting a peak that is only present at that position (creating a dip everywhere else), boosting a dip that is only present at that position (creating a peak everywhere else), and over-correcting room effects that average out across the audience area. The exception is a dedicated listening position (recording studio mix position, broadcast control room) where you optimize for one listener. For any venue with multiple listeners, average 3-8 positions and only EQ features that are consistent across positions. SonaVyx trace overlay and AI diagnostic consider spatial consistency in their recommendations.

Question 7

Should I use a graphic EQ or parametric EQ for system tuning?

Accepted Answer

Parametric EQ is strongly preferred for system tuning because: each filter can be precisely matched to the problem (frequency, bandwidth, and gain), fewer filters are needed (6-12 parametric versus 31 graphic bands), interaction between filters is more predictable, and the time-domain response is cleaner. Graphic EQs have fixed 1/3 octave spacing, which means problems between the fixed frequencies cannot be precisely addressed, and adjacent slider positions interact in complex ways. A graphic EQ with 5 or more adjacent sliders pushed up creates a broad boost with unpredictable ripple. Parametric EQ achieves the same broad boost with a single filter at the correct Q. SonaVyx AI diagnostic generates parametric EQ recommendations for this reason.

Question 8

Is it a mistake to EQ for flat response in a live venue?

Accepted Answer

Technically flat response at the listener position is not the ideal target for live sound. A slightly contoured response sounds more natural and pleasing: a gentle rise of 2-3 dB below 200 Hz adds warmth, flat through the 200 Hz to 4 kHz speech intelligibility range, and a gentle 3-6 dB rolloff above 8 kHz reduces harshness from PA speakers at close range. This is called a house curve. The B and K house curve and the X-curve (cinema standard) are formalized versions. A flat measurement at the mix position actually sounds bright and thin because the measurement microphone is more sensitive to high frequencies at close range than human ears in the same field. SonaVyx includes multiple target curves so you can EQ to a musically appropriate response rather than clinical flatness.

Common EQ Mistakes: Over-Boosting, Chasing Nulls, and When Not to EQ

Frequently Asked Questions