Notes on EQ in Mixing

Importance of EQ

• Key element in mixing.
• Essential during the tracking stage.
• Getting the right source material is also part of EQ.

Common Problem Frequencies

1. 700 Hz

• Often described as an annoying frequency, reminiscent of a sonar blip.
• Commonly problematic in:
  • Snare drums
  • Vocals (especially when using condenser mics)
• Tip: Removing 700 Hz can significantly improve clarity in mixes.

2. 4 kHz

• Known for causing ear fatigue.
• Our ear canals are sensitive in the 2-4 kHz range due to its prominence in speech.
• Often present in:
  • Guitars
  • Vocals
• Tip: Reducing 4 kHz can smooth out harshness in vocals and instruments.

3. Ghost Frequencies

• Sub-frequencies that are felt but not heard (below 20 Hz).
• Difficult to pinpoint and fix because they can't be heard.
• Solutions:
  • Roll off everything under 20 Hz.
  • Use a sub pack to feel those frequencies and tighten the low end.

4. 300-400 Hz

• Often associated with "mud" in mixes.
• Sounds like the source was recorded in a cardboard box.
• Commonly problematic in:
  • Toms
  • Kicks
  • Bass
• Tip: Make cuts in this range for clearer low end.

5. 10 kHz Roll-Off on Rhythm Guitars

• Cutting this frequency can improve clarity of lead parts.
• Helps eliminate fizz and adds bite to the mix.

Summary of Key Frequencies to Watch:

• 700 Hz: Annoying frequency, especially in snare and vocals.
• 4 kHz: Ear-fatiguing frequency, important in vocals and guitars.
• Ghost Frequencies: Felt but not heard; consider using sub packs.
• 300-400 Hz: Muddy sound, reduce for clarity in low-end instruments.
• 10 kHz: Roll-off for rhythm guitars to enhance leads.

Conclusion

• Understanding these frequencies can lead to quicker, smarter EQ decisions.
• Keep in mind the ranges can vary slightly (±100 Hz).
• Encouragement to subscribe for more tips.