Master Equalization: Post-Residual Volume with Matthieu Duvault

Master Equalization: Post-Residual Volume is designed for divers who have the theory but struggle with applying equalization at depth.

You’ll benefit from this course if:

• You understand the concepts, but mouthfill or deep Frenzel feels inconsistent
• You lose your charge or rhythm mid-dive
• You’re unsure when or how to shift between equalization techniques
• You’ve read about deep equalization but want real, experience-based guidance
• You teach others and want a clearer, more structured way to explain deep EQ challenges
• You’ve hit a wall around 30–40m (98–131ft) and can’t push deeper

This course is ideal for athletes hitting limits and instructors helping others overcome them.

This isn’t a typical technique demo. It’s a personal, practical conversation with a deep-diving coach who has trained himself and others through the same barriers.

Through six relaxed, information-packed video sessions, you’ll learn:

• How residual volume affects equalization and how to adapt
• Mouthfill management: how to charge, conserve, and release efficiently
• When and how to shift from Frenzel to mouthfill—or combine them
• Dry drills for improving glottis, tongue, and soft palate coordination
• Strategies to overcome panic, over-packing, inconsistent rhythm, and charge loss
• Reverse packing explained and practiced safely
• How to adapt your equalization approach to your body, flexibility, and depth goals

This course helps you understand what’s really happening in your body at depth so you can respond with confidence instead of guesswork.

• Six video lessons
• No buddy required
• EQ trainer recommended for some drills
• Watch on smartphone, tablet, computer, or TV
• Structured like a one-on-one sit-down with Matthieu
• Lifetime access to all materials

Matthieu Duvault is a Molchanovs Instructor Trainer and Canadian national record holder with extensive experience coaching divers through equalization plateaus. He has guided students past the post-residual volume threshold using practical, tested tools drawn from real deep diving, not just theory.

This course captures that experience in the most human and useful format: calm, personal, honest guidance that helps you truly understand and master your deep equalization.

You’ve done the theory. Now master the technique.

Start diving deeper with confidence—and equalize the way that works for your individual diving style.