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Diaphragm Call Technique

Predator CallingLevel 2 — Intermediate

Unlocks

Coyote VocalizationElk Calling

What It Is

Using a mouth-blown diaphragm call (latex stretched over horseshoe-shaped aluminum frame) to produce coyote howls, pup distress, elk bugles, cow calls, and turkey sounds. The single most versatile calling tool — hands-free operation allows simultaneous weapon management.

Correct Execution

Tongue presses against the latex from underneath, channeling air between tongue and reed. Higher pressure = higher pitch. Reduced pressure = lower pitch. Barks are produced by saying "Huck" into the call. Howls require sustained, constant tongue pressure. The call sits behind the front teeth on the roof of the mouth. Sound is clean, controlled, and varies in pitch/duration to match the intended vocalization.

Progression Levels

Diagnostic Tree

Coaching Cues

  • "I say 'Huck' to make a bark." — Al Morris, bark production technique
  • "Learn how to use the diaphragm — it changed my life, it might change yours too." — Al Morris (2019)
  • "Don't be intimidated by a diaphragm call — it's just latex, aluminum, and athletic tape." — Al Morris (2017)
  • "Try it before you say you can't." — Al Morris, beginner encouragement
  • "Five minutes of mentoring can change your life." — Al Morris, on learning from Wayne Carlton (1983)

Common Errors

  1. Inverted call placement: Putting call upside down produces wrong sound entirely → Latex side faces tongue, frame faces roof of mouth → Al Morris
  2. Giving up too early: Expecting immediate results when it takes weeks of practice → Practice daily in truck/at home; breakthrough comes with repetition → Al Morris
  3. Buying too many calls before finding fit: Over-investing before knowing what works for your mouth → Try 3-4 brands, find one that fits, master it → Al Morris
  4. Only using diaphragm OR electronic: Best results come from both simultaneously → Run diaphragm for vocalizations while electronic plays prey distress → Al Morris

Edges

💎 Elite-Only Behavior

Desperation Beats Precision

predator-callingdiaphragm-call-technique →

At Level 3+, the breakthrough isn't better pitch control — it's emotional realism. Sounds that convey genuine urgency, fear, or aggression trigger animal responses that technically-perfect-but-flat calls don't. The difference between a "correct" howl and a howl that makes a coyote charge is emotional authenticity, not acoustic accuracy.

What most people do
Practice hitting the right notes — matching pitch, duration, and rhythm of recorded calls.
What the best do
Practice conveying emotional states — desperation in distress, territorial rage in challenge howls, genuine fear in pup screams. "Mechanical execution without emotional realism — sounds technically correct but lacks the desperation/urgency that triggers response."
Why it's an edge: Animals don't evaluate acoustic fidelity. They evaluate emotional content. A sloppy, desperate-sounding howl outperforms a clean, measured one because the emotional signal is what triggers approach behavior.
How to exploit: Record yourself calling. Listen back not for pitch accuracy, but for whether the sound makes YOU feel something — urgency, fear, aggression. If it sounds like a practice exercise, it sounds like one to coyotes too.
Cross-domain parallel
Acting — Stanislavski's method: audiences respond to genuine emotion, not technical recitation. A line delivered with feeling beats a perfectly-enunciated but flat delivery every time.
Al Morris, progression from Level 2 (pitch control) to Level 3 (emotional quality) in diaphragm skill development

Sources

  • Al Morris, Basics of Using a Diaphragm Call (2019) — Core technique: tongue placement, pressure, bark/howl mechanics
  • Al Morris, Intro to Elk Calling with Big Al Morris (2017) — Call construction, fit issues, brand recommendations
  • Al Morris, Coyote Hunting 101, Soulful Hunter Podcast (2021) — Wayne Carlton mentorship origin story, championship use
  • Al Morris, MWW Coyote Hunting Tips (2025) — Diaphragm as foundation learned 1983, still primary tool