Choosing The Right Mouth Call Reed
An intermediate reed-selection guide covering medium- and loud-voice closed reeds, cottontail vs. jackrabbit starting points, single and double reeds, sample packs, tuning bends, body interaction, sleeves, bushings, open-reed dimensions, tone boards, and controlled testing.
Reed catalogs contain hundreds of choices, but the finished sound is never created by the reed alone. This guide explains how to narrow the field, use sampler packs intelligently, and tune and test reeds inside the body system you actually intend to build.
How Do You Choose The Right Reed For A Predator Mouth Call?
Choose a predator mouth-call reed by treating reed labels as a starting point rather than a fixed sound definition. For closed reeds, thinner medium-voice single reeds are a useful starting direction for cottontail-style distress, while thicker loud-voice reeds and double reeds are useful starting directions for jackrabbit and larger-prey sounds. The same reed can produce different voices after a small tuning bend or when installed in a different call body. For open reeds, compare reed length, thickness, and shape together with the tone board and body. The most reliable selection method is to test multiple reeds in a controlled build and document the combination that produces the sound you want.
Reed selection is one of the most misunderstood parts of call building because it is tempting to ask for “the cottontail reed” or “the jackrabbit reed.” In reality, there are hundreds of closed-reed variations, many are interchangeable, and builders often use the same commercial reed for different finished calls.
That is not a contradiction. It happens because a reed is only one part of the acoustic system. The builder can change the bend, mounting depth, call body, bore, sleeve or bushing, and air path. The caller then adds another layer through air pressure and hand position.
The best question is therefore: Which reed gives me the response and tone I want in this specific body and mounting system?
The Reed-Selection Framework
Use this framework to keep reed selection practical even when commercial reed catalogs contain many similar-looking options.
Why There Is No Universal “Cottontail Reed”
Call Builder A may use one reed model in a compact body, add a small bend, and sell the finished call as a raspy cottontail. Call Builder B may use the same reed with a different body, different mounting depth, and less tuning, then call the finished voice a jackrabbit.
Both can be reasonable because the reed's commercial model number does not dictate the finished animal sound. It describes a component with certain physical and voice characteristics. The final sound is the interaction of the complete call.
This is also why major call makers often do not disclose their exact reed model or tuning. Their combination of reed, bend, body, and bore is part of the product design and may be treated as a trade secret.
When talking to another builder, ask what reed family, voice, thickness, or single/double style they would test first. Expect to do your own tuning and body matching.
Practical Closed-Reed Starting Rules
| Desired Voice | Useful Starting Direction | Why It Often Works | Important Caveat |
|---|---|---|---|
| Cottontail distress | Thinner single reed; medium voice / medium volume | Responsive, moderate output, easier smaller-prey character | A louder or thicker reed can still make cottontail after tuning/body changes |
| Raspy cottontail | Medium or loud single reed with tuning experimentation | More body and rasp potential | Do not assume loud voice means jackrabbit only |
| Jackrabbit distress | Thicker single reed; loud voice | More air and stronger, deeper distress potential | Body and bend can move the result |
| Loud jackrabbit / large prey | Loud voice or double reed | More complexity, rasp, and stronger output potential | Requires compatible body and air path |
| Coon squaller | Often reeds similar to loud jackrabbit families | Strong raspy response and volume | Squaller design and body are equally important |
| Experimental prey voice | Any compatible reed from a sampler | Lets the body and tuning reveal unexpected useful sounds | Document everything |
These are starting points, not product guarantees. Use the result of actual testing to decide what the reed “is” in your call.
What Medium Voice And Loud Voice Actually Tell You
Voice labels help organize a large reed catalog. A medium-voice reed generally suggests a reed intended to operate at a moderate range of pressure and output. A loud-voice reed is generally intended to accept more air and produce stronger output.
That does not mean medium voice automatically equals cottontail and loud voice automatically equals jackrabbit. A tuned loud-voice reed can produce a raspy cottontail character, while a medium voice in a larger resonant body may sound bigger than expected.
Use the label to predict behavior—air requirement, output, stiffness, rasp potential—not to define the animal sound before testing.
Single Reeds vs. Double Reeds
A single closed reed uses one vibrating reed and often produces a cleaner, more direct tone. It is a strong starting point because the builder can hear the effect of body and tuning without the additional interaction of a second reed.
A double reed uses two vibrating elements and can add rasp, texture, and complexity. It may also require more air or a different body to perform well.
Double reeds are useful when the builder wants a rougher jackrabbit, larger-prey, or squaller-type voice, but they are not automatically better. A well-tuned single reed can produce plenty of rasp.
Sample Reed Kit 002: Broad Testing With Minimal Commitment
Sample Reed Kit 002 is designed for builders who want to hear several popular closed-reed options without purchasing bulk packs of each.
| Included Component | Quantity | What It Lets You Compare |
|---|---|---|
| LV-002 | 2 | Loud-voice response and body matching |
| LV-003 | 2 | Another loud-voice configuration for comparison |
| LV-025 | 2 | Loud-voice variation with a different reed specification |
| MV-025 | 2 | Medium-voice response |
| LVDR-002 | 2 | Loud-voice double-reed character |
| LVDR-025 | 2 | Second loud-voice double-reed variation |
| MV-002 | 2 | Additional medium-voice comparison |
| Reed sleeves | 2 | Sleeve-mounted testing and serviceable installation |
The kit provides 14 reeds across seven reed models plus two reed sleeves. That makes it an inexpensive way to compare medium voice, loud voice, and double-reed behavior before committing to a larger quantity.
40-Reed Stainless Steel Sampler: A Larger Controlled Test Pack
The 40-Reed Stainless Steel Sampler contains ten each of four reed configurations:
- 10 Single Reed Medium Voice MV-025
- 10 Single Reed Loud Voice LV-025
- 10 Single Reed Loud Voice LV-002
- 10 Loud Voice Double Reed LVDR-002-002
These reeds are used by call makers for cottontail, jackrabbit, and larger-prey distress calls. The pack is useful after the builder wants enough duplicates to repeat builds, tune several versions of the same reed, and compare results across multiple bodies.
Closed-Reed Tuning Can Change What The Same Reed Becomes
Most closed reeds are usable directly from the package. Builders can also tune them by adding or increasing a slight upward bend in the reed. Some builders call this bend the taper.
A thin, flat object is slid underneath the reed and lifted gently. Razor blades and thin knives are commonly used by builders because they are flat, but they must be handled carefully. A dedicated thin tuning tool or other smooth flat shim can accomplish the same basic positioning task with less cutting hazard.
The adjustment should be tiny. Bend, remove the tool, test, and repeat only if needed. Once the reed has too much bend, it may not return to its original response and can be ruined.
The Call Body Can Change Reed Selection
A reed that works perfectly in one call body may feel wrong in another. Body length, internal bore, reed depth, bell shape, material, and exhaust opening influence back pressure and resonance.
A tight body can make a reed feel more resistant. A larger body can add resonance or change how a loud reed projects. Acrylic and natural horn bodies can also differ in wall shape and internal volume even when the reed seat is similar.
For controlled testing, keep one body constant while comparing reeds. Then keep the winning reed constant while testing body changes. That one-variable-at-a-time method is far more informative than swapping both simultaneously.
Sleeves, Bushings, And Direct Fit Can Change The Test
A closed reed can be inserted directly into the call body, placed in a tapered metal sleeve, or held by a rubber bushing. These methods affect serviceability, fit, and sometimes the way the call feels under air.
The JC Products sleeve system uses a 9/32-inch body hole. A direct JC reed installation without the sleeve uses a 7/32-inch body hole. A rubber bushing needs the body opening required by that specific bushing, so do not assume either dimension automatically applies.
Browse Reed Sleeves & Bushings, JC Reed Sleeves, Single-Hole Bushings, and Two-Hole Bushings.
Open-Reed Selection Uses A Different Set Of Variables
Open reeds are commonly cut to different lengths, thicknesses, widths, and shapes. Each variable changes stiffness, pitch potential, air requirement, and volume capability.
| Open-Reed Variable | General Effect When Increased | Why Tone Board Still Matters |
|---|---|---|
| Length | More vibrating mass; can support lower pitch and broader travel | Contact point and tone-board curve determine effective vibrating length |
| Thickness | More stiffness and stronger air tolerance | A steep or narrow board can make the same thickness feel different |
| Width | Changes stiffness and vibrating area | Air-channel width and reed seat affect response |
| Tip shape | Changes how the reed starts and flexes | Tone-board tip geometry interacts with the shape |
| Reed projection / position | Changes free vibrating section | Attachment point and board curve determine usable pitch zones |
These are tendencies, not guarantees. Open-reed selection must be tested on the actual tone board and body.
Use Open Reed Selection Guide and browse Open Reeds.
Tone Boards Determine Whether An Open Reed Works
The tone board controls reed support, curvature, air channel, and the surface the caller's lips use to change effective reed length. A reed that feels perfect on one board can squeal, stall, or become too stiff on another.
For new builders, Tone Board kits provide a low-cost way to experiment with known board geometry and popular open reeds before designing an entire tone board from scratch.
When a combination works, record the reed material, length, attachment position, and tone-board model before making further changes.
Test The Reed Across The Air Range You Need
| Air Test | What A Good Reed Should Do | What A Mismatch May Do |
|---|---|---|
| Soft start | Engage cleanly near minimum pressure | Delay, stick, or require a blast |
| Medium voice | Hold stable useful hunting tone | Flutter or sound thin |
| Strong voice | Increase output without collapsing | Squeal, choke, or distort |
| Repeated calling | Remain consistent as moisture builds | Stick or change pitch |
| Hand modulation | Respond to bell/body resonance changes | Stay flat or overly restricted |
A cottontail call used in brush needs a different priority from a loud open-country jackrabbit call. Select for the real field pressure range, not the loudest sound possible.
Coon Squaller Reed Selection Uses Similar Experimentation
Coon squallers often use closed reeds similar to those used in loud jackrabbit-type calls. Strong voice, rasp, and volume are common goals.
That does not mean every jackrabbit reed automatically produces a good squaller. Body length, exhaust shape, single vs. double reed, and tuning still determine the final voice.
If building squallers, test several louder reed families and document the body combination that creates the aggressive tone you want.
Research Other Builders—Then Expect To Experiment
Call-building forums, experienced hobby builders, and local makers can provide useful starting points. Some builders are generous with reed information; established commercial makers may not disclose exact reed models because they consider the combination proprietary.
Use shared information to narrow the test range, not as a guarantee. Buy a sampler, hold the body constant, try multiple reeds, and adjust bend only after you have heard the untreated version.
The builder who develops a repeatable testing method eventually depends less on secret recipes because they understand how the variables interact.
A Practical Reed-Selection Rule
Use medium/thinner single reeds as a cottontail starting point and thicker/louder or double reeds as a jackrabbit starting point—but judge the final sound only after tuning, mounting, body, and air are all in the system.
Selection Process: Choose And Test A Mouth-Call Reed
Use this process to move from a finished sound goal through reed family, body fit, sampler testing, tiny tuning changes, open-reed dimensions, air-range testing, and repeatable documentation.
Define the finished sound, not just the animal name
Decide whether you want a clean cottontail, raspy cottontail, loud jackrabbit, large-prey distress, coon squaller, high-pitched open-reed prey call, or broad open-reed vocalization range.
Separate closed-reed and open-reed decisions
Closed reeds are preformed metal assemblies with many voice, thickness, and single/double variations. Open reeds are selected by flexible reed dimensions and how they work on a specific tone board.
Use reed labels as starting clues
Medium voice, loud voice, single, and double descriptions are useful, but they do not uniquely identify the finished sound.
Match the reed to the body and mounting system
The call body, bore, sleeve, bushing, insertion depth, and exhaust shape can make the same reed sound different.
Test several reeds before buying bulk
Use a sampler in one controlled test body so you can hear how reed model changes the voice while the other variables stay as consistent as possible.
Tune closed reeds in tiny increments
A slight upward bend or taper can change tone and response. Make one small change, test, and stop before the reed is over-bent.
Evaluate open reeds by length, thickness, and shape
Then test those reed dimensions on the intended tone board and body because the complete geometry determines useful pitch and volume.
Compare soft, medium, and strong air
A reed that sounds good only at one pressure may not fit the field role. Test the range you expect to use.
Document the final combination
Record reed model, body, mounting method, tuning, and sound result so the successful setup can be reproduced.
Common Mouth-Call Reed Selection Mistakes
Reed selection becomes confusing when labels are treated as final sound definitions. These mistakes prevent builders from learning how the complete call actually behaves.
Calling A Reed A Cottontail Or Jackrabbit Reed Too Absolutely
Reed voice labels are only starting points because tuning, call body, bore, and mounting can change the final sound.
Buying Bulk Before Testing
A builder can end up with dozens of reeds that do not match the chosen body or sound goal.
Ignoring Single vs. Double Reed Character
Double reeds can add rasp and complexity, but they also change air requirement and alignment.
Over-Bending During Tuning
A little bend can be useful; too much can permanently damage the reed and remove the original reference point.
Changing Body And Reed At The Same Time
If two variables change together, the builder cannot tell which change produced the new sound.
Selecting Open Reeds By Thickness Alone
Length, shape, tone board, air channel, and body must be considered together.
Recommended Call-Building Components And Categories
Use these categories and sample products to compare reeds, sleeves, bushings, tone boards, bodies, and other parts while developing or servicing predator mouth calls.
Reeds & Reed Supplies
Browse the full reed-building category before narrowing to open or closed systems.
Shop Reed Supplies →Closed Reeds
Compare medium voice, loud voice, single, and double closed-reed variations.
Shop Closed Reeds →Sample Reed Kit 002
Start with 14 reeds across seven popular models plus two sleeves.
Shop Sample Kit 002 →40-Reed Stainless Sampler
Test ten each of four common stainless-steel reed configurations.
Shop 40-Reed Sampler →Continue Learning About Mouth Calling
Continue through the Predator Hunting Academy with the most relevant mouth-call building, reed, tuning, maintenance, sound, and field-use resources for this topic.
Understanding Mouth Call Reeds
Learn the mechanics behind open, closed, single, double, thick, thin, long, and short reeds.
Continue Learning →Closed Reed Selection Guide
Go deeper into voice labels, single/double options, sample packs, sleeves, bushings, and body matching.
Continue Learning →Open Reed Selection Guide
Compare open-reed dimensions, tone boards, volume, pitch range, and body interaction.
Continue Learning →How To Tune A Closed Reed Mouth Call
Learn the tiny-bend tuning method and how to test each change.
Continue Learning →How To Tune An Open Reed Mouth Call
Tune open-reed position, length, shape, and tone-board relationship.
Continue Learning →Call Building Supplies Guide
Match reed choice with sleeves, bushings, bodies, tone boards, and installation tools.
Continue Learning →Choosing The Right Mouth Call Reed FAQ
These answers cover cottontail and jackrabbit starting points, reed interchangeability, tuning, Sample Reed Kit 002, the 40-reed sampler, double reeds, body interaction, open-reed choice, and bulk buying.
A thinner single reed with a medium-voice or medium-volume character is a useful starting point, but many reeds can produce cottontail sounds after tuning and body changes.
Thicker loud-voice reeds and double reeds are useful starting points for jackrabbit and larger-prey distress, but the final call body and tuning still matter.
Yes. Builders often use the same reed model for different finished voices by changing bend, body, mounting, and air system.
The reed may be identical while the finished call is different. Each builder's body, bore, tuning, and marketing name can describe the final sound rather than the component.
A slight upward bend or taper can be added with a thin flat object beneath the reed. Make very small adjustments because too much bend can ruin the reed.
It includes two each of LV-002, LV-003, LV-025, MV-025, LVDR-002, LVDR-025, and MV-002—14 reeds total—plus two reed sleeves.
It contains ten each of MV-025, LV-025, LV-002, and LVDR-002-002 stainless-steel reeds.
Not always, but double reeds commonly add rasp, complexity, and strong output. Body, tuning, and air pressure still determine the finished volume.
Yes. Bore, length, material, exhaust, reed depth, sleeve, and bushing can change back pressure and tone enough that a winning reed in one body may not be ideal in another.
Compare length, thickness, width, shape, and position on the intended tone board. Then test pitch range, low-air response, and strong-air stability.
Usually no. Sample packs are a better first step because they let you compare multiple reed families without committing to one voice.
Hold as many variables constant as possible, change one reed or tuning variable at a time, record the result, and repeat until the sound goal is reached.