How To Choose An Open Reed Mouth Call
An intermediate open-reed selection and use guide covering toneboards, reed stiffness, lip position, pitch control, air pressure, rabbit distress, bird distress, coyote howls, hand modulation, volume, cold-weather performance, tuning, and replacement reeds.
An open reed can be one of the most versatile tools in a predator hunter's lanyard, but only when the reed, toneboard, and air requirement fit the caller. This guide explains what to buy and exactly how to test the call across the sounds you want to make.
What Should You Look For In An Open-Reed Predator Call?
Choose an open-reed predator call by matching the toneboard and reed to the sounds you want to make, the amount of air pressure you naturally use, and the pitch range you can control cleanly. A good call should start easily, let you move from high pitch near the reed tip toward lower pitch farther back on the reed, remain stable from low to high volume, feel comfortable on the lips, and recover quickly from moisture or cold.
Open reeds are popular because one call can cover a surprising amount of sound territory. The tradeoff is that the hunter becomes part of the tuning system: lip position, lip pressure, air pressure, hand position, and reed contact all change the sound.
That means choosing the right open reed is less about finding the “best” model and more about finding the toneboard-and-reed combination that matches your mouth, air, and sound goals.
The Open-Reed Selection Framework
Choose the call in this order. Brand, color, and decorative material should come after the functional fit.
How An Open Reed Produces Sound
An open-reed call exposes the reed over a toneboard. Air moving across the reed causes it to vibrate. Your lips contact the reed and toneboard directly, changing the effective vibrating length and the amount of pressure holding the reed against the board.
Moving the lip contact toward the reed tip shortens the free vibrating section and raises pitch. Moving farther back toward the call body leaves more reed free and lowers pitch. Lip pressure, reed stiffness, and airflow then change how clean, raspy, loud, or unstable that note becomes.
Use How Predator Mouth Calls Work and Understanding Mouth Call Reeds for the mechanical foundation.
Choose The Open Reed For The Sound Job
| Primary Job | Useful Toneboard / Reed Tendencies | What To Prioritize |
|---|---|---|
| Rabbit distress | Medium pitch range, responsive reed, good hand modulation | Clean breaks, rasp control, volume range |
| Bird / fox / bobcat prey | Responsive higher-pitched setup | Easy start, high pitch, subtle volume |
| Coyote howls | Longer controlled pitch travel, stable reed under more air | Smooth pitch slides, sustained tone, projection |
| Pup distress | Responsive mid-to-high pitch with easy emotion/whine | Fast pitch changes, controlled rasp |
| Close coaxing | Small responsive high pitch | Low air requirement, tiny squeaks, low volume |
| General-purpose call | Broad controllable board with medium reed | Versatility without excessive sensitivity |
A call designed as a broad predator open reed can often do several jobs, but specialized toneboards make certain sounds easier. Use Best Mouth Calls For Coyotes, Best Mouth Calls For Foxes, and Best Mouth Calls For Bobcats when species is the main buying factor.
Toneboard Shape Determines How Much Pitch Travel You Have
The toneboard supports the reed and provides the surface your lips ride across. Length, width, curvature, groove design, and reed attachment all influence how the call responds.
A longer board often gives more room to slide between high and low notes, which is useful for howls and large prey-distress pitch sweeps. A shorter or narrower board may feel easier for high-pitched distress and coaxing.
Do not judge a board by size alone. The important question is whether you can find repeatable lip positions for the sounds you need without hunting for the note every time.
Match Reed Stiffness To Your Air Pressure
A thinner or softer reed generally needs less air to start. It can feel lively and responsive for high-pitched prey sounds, but it can become unstable if you drive it with more pressure than it can handle.
A thicker or stiffer reed generally accepts more air and can remain stable at higher volume. It may favor stronger projection, lower notes, or rasp, but can feel difficult if you naturally use light air.
If you have to clench your jaw and force air just to make the call start, the reed may be too stiff for your current technique. If it squeals every time you increase volume, the reed may be too soft or your lip pressure may be too light.
Use Choosing The Right Mouth Call Reed and Mouth Call Air Control.
Test Pitch By Moving Lip Position Deliberately
Put the toneboard between relaxed lips with the reed facing upward or in the orientation the call maker intends. Start near the tip with light contact and blow a clean high note. Then move the call slightly deeper so the lips contact farther back on the reed. The pitch should drop as more reed is allowed to vibrate.
Repeat the motion slowly. You are looking for a call with several usable “zones,” not one narrow sweet spot. A good fit lets you find high prey squeals, midrange rabbit distress, and lower notes without the reed sticking or jumping unpredictably.
Use Mouth Call Hand Position and How To Practice Mouth Calls to turn those zones into repeatable technique.
Lip Pressure Should Control The Reed Without Choking It
Too little lip pressure lets the reed vibrate freely but can cause uncontrolled squeals, especially with strong air. Too much pressure pins the reed to the toneboard and can stop the sound entirely.
Start with just enough contact to get a clean note. Increase pressure slightly for tighter, cleaner, or higher-pitched control. Back off for more rasp and a freer reed. The exact amount changes with reed stiffness.
A call that requires extreme lip pressure to keep the reed stable may not fit your natural air style.
Air Requirement Is A Major Buying Factor
Open reeds can vary from very easy-blowing to calls that are designed to accept a large volume of air. You should be able to start the call cleanly with controlled diaphragm-supported air rather than a violent burst from the cheeks.
Test three levels: low air for close sounds, medium air for normal prey distress, and stronger air for open-country projection. The call should remain usable through all three if versatility is the goal.
How To Test Rabbit Distress On An Open Reed
Place the lips in the mid-to-forward part of the toneboard where you can produce a medium-high note. Start the sound with a clean burst of air, then let the reed break into a slight rasp by relaxing lip pressure.
Use uneven cries rather than identical notes. A useful practice phrase is: waaah—waaah—wa-wa-WAAAH, with each cry changing slightly in length and intensity. Cup the hand over the bell during the cry and open it toward the end to change resonance and direction.
To raise pitch for a smaller prey sound, move lip contact toward the reed tip and reduce the amount of free reed. For a larger, raspier rabbit, move slightly farther back and use more controlled air.
A good rabbit-distress open reed should let you start, rasp, and stop without squealing. The realism often comes from the uneven break and restart rather than a perfectly smooth tone.
How To Test Bird Distress
Use a forward lip position near the reed tip and lighter air. Make short, sharp notes instead of long rabbit cries. Think in irregular clusters: peep-peep—PEEP—peep-peep-peep.
Keep the hand more open than for deep rabbit distress so the sound stays bright. Small finger movements around the bell can add variation without moving the lips off the high-pitch zone.
If the call cannot produce a clean high note without excessive pressure, it may not be the best choice for a fox/bobcat bird-distress role.
How To Test A Coyote Howl On An Open Reed
Use a lower pitch position farther back on the toneboard. Start the note with steady air and a moderate lip seal. As the howl develops, slide the lip contact slightly forward to raise pitch, then let the note taper by reducing airflow rather than abruptly stopping.
A simple practice howl is a clean low-to-rising note held for roughly one to several seconds, depending on the vocalization you are imitating. The important test is whether the call can make a smooth pitch slide without reed chatter or a sudden squeal.
Not every open reed is designed to be a full howler. If coyote vocalizations are a major job, compare the call with dedicated Howlers and use Using Coyote Vocalizations With Mouth Calls.
Test How The Bell Responds To Hand Position
Cup one or both hands loosely around the call bell. Closing the hand cavity darkens and muffles the sound; opening the hand brightens it and projects more directly.
Do not clamp the bell completely shut unless you are intentionally trying to mute it. For rabbit distress, pulse the hand open and closed irregularly to create movement and resonance changes. For howls, a more open bell often preserves projection.
Choose A Call That Sounds Good Before Maximum Volume
A strong open-reed call should have useful low and medium settings. If it only comes alive when driven hard, it may be tiring in heavy cover and difficult for subtle finishing sounds.
Open-country hunters may deliberately choose a call that accepts more air and stays stable at stronger volume. Tight-cover hunters may prefer a more responsive reed.
Use Best Mouth Calls For Open Country and Best Mouth Calls For Heavy Cover.
Open Reeds Have Useful Cold-Weather Advantages
Because the reed is exposed, moisture can often be wiped away and the reed can be lifted gently from the toneboard if it sticks. That can make an open reed easier to recover in freezing conditions than a reed hidden inside a closed assembly.
Still, saliva can freeze, reed material can stiffen in cold, and a wet call stored against clothing can change temperature quickly. Practice clearing the reed without bending it.
Use Using Mouth Calls During Winter and Mouth Call Troubleshooting.
Consider Whether You Want A Tunable Call
Some open reeds allow the reed position, length, or material to be changed. Small adjustments can alter pitch, air requirement, rasp, and stability.
A tunable call is valuable for experienced hunters who understand what they want. A beginner may be better served by a proven factory setup that stays consistent while technique develops.
Use How To Tune An Open Reed Mouth Call, Replacing Mouth Call Reeds, and browse Replacement Reeds.
Match The Open Reed To Field Style
| Field Style | Reed / Toneboard Priority | Why |
|---|---|---|
| Heavy cover | Responsive reed, easy low-volume start | Predators may be close and subtle sound matters |
| Open country | Stable reed under stronger air, useful bell projection | The call must stay clean at distance |
| Coyote vocals | Long controllable pitch travel | Howls and whines need smooth slides |
| Fox/bobcat prey | Responsive high-pitch zone | Bird, rodent, and small-rabbit sounds benefit |
| Winter calling | Accessible exposed reed and simple clearing | Moisture and freezing are easier to inspect |
| Beginner all-purpose | Medium reed and forgiving board | Enough range without extreme sensitivity |
One open reed can cover several rows, but no call has to be ideal for all of them. If your primary stand style is obvious, prioritize that use instead of buying for maximum theoretical versatility.
Open-Reed Field-Fit Scorecard
| Test | Good Fit | Poor Fit |
|---|---|---|
| Clean start | Speaks with controlled medium air | Needs blast or frequent reset |
| High pitch | Tip zone is easy to find | Constant squeal or unstable note |
| Low pitch | Back zone stays clean under more reed length | Reed stalls or tone collapses |
| Pitch slide | High-to-low movement is smooth | Jumps unpredictably between notes |
| Low volume | Reed remains active near start threshold | Cuts out immediately |
| Strong volume | Accepts more air without losing control | Overblows before useful projection |
| Hand modulation | Bell changes resonance clearly | Little useful tonal difference |
| Moisture recovery | Reed wipes/clears quickly | Repeated sticking or difficult reset |
Score the call on the jobs you actually hunt. A fox hunter may care more about high pitch and low-volume starts; an open-country coyote hunter may prioritize strong-volume stability and howl pitch travel.
A Practical Open-Reed Selection Rule
A good open reed should not force you into one note. It should let you start cleanly, move pitch with lip position, change character with pressure and hands, and stay stable across your real hunting volume range.
Field Process: Choose And Test An Open-Reed Mouth Call
Use this process to match sound goals, toneboard, reed stiffness, lip comfort, pitch travel, volume, hand control, and weather performance to the open reed you choose.
Define the main sound job
Decide whether the call must produce rabbit distress, bird distress, coyote vocals, pup distress, fox/bobcat prey sounds, or a broad mix. The toneboard and reed should fit the primary job.
Choose a toneboard length and width you can control
Longer or wider toneboards can provide a broad pitch range and strong projection, while smaller boards can feel easier for high-pitched prey sounds. Control matters more than theoretical range.
Match reed stiffness to your air
A softer/thinner reed usually starts with less pressure and favors high responsive sounds; a stiffer/thicker reed generally accepts more air, can feel more stable at volume, and may favor lower or raspier sounds.
Check lip comfort and mouthpiece shape
The call should sit comfortably between the lips without sharp edges, excessive width, or a position that forces jaw tension.
Test the pitch travel
Confirm you can move cleanly from higher pitch near the reed tip toward lower pitch farther back on the reed without squealing, locking, or losing the reed.
Test low, medium, and high volume
A useful open reed should stay controllable across the volume range you will hunt, not only at maximum output.
Test hand modulation
Cup and open the hand around the bell to check how much resonance, rasp, and directional change you can create.
Check cold and moisture behavior
Open reeds can be easier to clear than enclosed systems, but ice, saliva, and reed contact still affect performance. Make sure the reed can be wiped or reset quickly.
Buy for the sounds you can actually reproduce
Choose the call whose toneboard and reed let you make clean sounds now while leaving enough range to grow.
Common Open-Reed Selection Mistakes
Open reeds reward fit and technique. These mistakes happen when hunters buy for theoretical range, stiffness, or rasp before checking whether they can control the reed cleanly.
Buying The Longest Toneboard For Maximum Range
A broad pitch range is useless if the board is too large or sensitive for you to control cleanly.
Choosing A Reed That Is Too Stiff
A stiff reed can demand more pressure than a beginner can deliver consistently, creating weak starts and jaw tension.
Choosing A Reed That Is Too Soft
An overly soft reed may overblow, squeal, or lose stability when you try to reach louder open-country volume.
Testing Only One Sound
An open reed should be judged across the sound jobs you actually need: prey distress, whines, howls, pup distress, or close coaxing.
Ignoring Lip Position And Comfort
Open reeds are controlled directly by the lips. A call that feels awkward will be harder to practice and less reliable under pressure.
Assuming More Rasp Is Always Better
Rasp can add character, but too much reed buzz can bury the clean pitch changes needed for certain prey sounds and coyote vocals.
Recommended Mouth Calls And Categories
Open Reed Calls
Compare versatile exposed-reed predator calls across species and pitch ranges.
Shop Open Reed Calls →Mouth Calls
Browse the full mouth-call selection when you are not yet committed to an open reed.
Shop Mouth Calls →Coaxers
Add a specialized low-volume finishing call when tiny prey sounds are important.
Shop Coaxers →Lanyards
Keep the open reed accessible and separate from calls that can damage the exposed reed.
Shop Lanyards →Continue Learning About Mouth Calling
Continue through the Predator Hunting Academy with the most relevant mouth-calling, sound, species, terrain, gear, pressure, and night-hunting resources for this topic.
Open Reed vs. Closed Reed Mouth Calls
Compare the versatility, learning curve, weather handling, sound range, and field roles of both designs.
Continue Learning →Choosing The Right Mouth Call Reed
Understand reed thickness, tension, material, responsiveness, and how they change air and pitch.
Continue Learning →How To Tune An Open Reed Mouth Call
Learn how reed position and tuning changes alter pitch, stability, air requirement, and rasp.
Continue Learning →Mouth Call Air Control
Develop the steady air column and pressure changes needed to control an exposed reed.
Continue Learning →Mouth Call Hand Position
Use hand cupping, opening, direction, and bell control to shape tone and projection.
Continue Learning →Best Mouth Calls For Coyotes
Apply open-reed selection to prey sounds, howls, pup distress, and coyote-specific field needs.
Continue Learning →How To Choose An Open Reed Mouth Call FAQ
These answers cover toneboards, reed stiffness, pitch control, beginner fit, rabbit distress, coyote howls, squealing, hand position, cold weather, tuning, and replacement reeds.
A good open reed starts easily, has several controllable pitch zones, stays stable across useful volume levels, feels comfortable on the lips, and uses a reed stiffness that matches the caller's air.
They require more lip and air control than most closed reeds, but the technique becomes repeatable when you practice clean starts, pitch zones, and volume separately.
Move lip contact toward the reed tip for a shorter vibrating section and higher pitch; move farther back toward the call body for a longer vibrating section and lower pitch.
Thinner/softer reeds generally start with less air and favor responsiveness; thicker/stiffer reeds can accept more air and stay stable at stronger volume. Match the reed to your technique and sound job.
Many versatile open reeds can produce both, but a specialized howler or prey call may make one job easier. Toneboard size and pitch range matter.
It should sit securely without forcing jaw tension or causing sharp pressure points. You should be able to slide between pitch positions smoothly.
Common causes include too much air, too little lip pressure, a reed that is too soft for the pressure, or an abrupt movement between pitch zones.
They can be because the exposed reed is easier to inspect and clear, but moisture can still freeze and the reed must be handled carefully.
Many designs allow replacement or tuning. Use the call maker's compatible reed material and preserve the original position as a reference.
A medium, responsive reed on a comfortable toneboard with a forgiving pitch range is usually easier than an extremely stiff or highly sensitive specialty setup.
Cupping the bell darkens and muffles the sound; opening the hands brightens and projects it. Moving the hand during a cry adds realistic resonance changes.
Choosing for maximum range or rasp without confirming that the toneboard, reed stiffness, and air requirement are actually controllable for the hunter.