Shure SM39-LM3
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- This item is covered for 3 years
Essential Information About the Shure SM39 Headset Microphone
Essential Information About the Shure SM39 Headset Microphone
- Clear and Controlled Voice on Stage: Cardioid polar pattern with over 20 dB off-axis rejection to limit bleed and maintain consistent intelligibility.
- Total Freedom of Movement: Lightweight design, low profile, and secure fit thanks to a flexible and adjustable boom.
- Designed for Real-World Conditions: Hydrophobic coating resistant to sweat and included windshields for indoor and outdoor use.
- Simple Wireless Integration: Compatible with Axient Digital and designed to work with Shure wireless systems (depending on connector type).
Manufacturer Information
Shure
https://www.shure.com
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Safety manager:
Algam SAS
Email: contact@algam.net
Address:
A Headset Designed for the Modern Stage and the Shure Wireless Ecosystem
The Shure SM39 fits within the "performance" headset microphone category: providing stable vocal capture close to the mouth while remaining discreet and comfortable. Its positioning targets environments where mobility, level consistency, and bleed management are priorities, especially when paired with a wireless stage setup.
For Which Artists and Uses?
The SM39 is ideal for singers, dancers, actors, presenters, coaches, and speakers who need to move freely while maintaining a clear voice in the mix. It is also well suited for noisy stages (monitors, drums, brass, close wedges) thanks to its cardioid polar pattern, useful for keeping the voice upfront without excessively increasing gain.
Technical specifications
| Sensitivity | -40 dBV/Pa | Nominal impedance | 95 Ω |
| SPL max | 134 dB | Connection | lemo3 |
| Frequency response - start | 70 Hz | Clamp included | Yes |
| Frequency response - end | 20 kHz | Included accessories | Windscreen, clothespin |
| Category | voice microphone | Color | Black |
| Type | headband | Switch | No |
| Directivity | cardioid | Weight | 54 g |
| Capsule | electret | ||
Questions frequently asked
Is the Shure SM39-LM3 compatible with Axient Digital?
The LEMO3 connector allows integration into Shure Axient Digital setups. A +5 V DC power supply is recommended on pin 2 relative to pin 1.
Does this headset microphone reduce feedback on stage?
Its cardioid electret capsule provides an off-axis rejection of over 20 dB. This directionality helps attenuate monitor, drum, or horn spill. Placement close to the mouth helps maintain a clear voice in the mix.
What is the length of the microphone cable?
The cable is 1.5 m long and terminates in a LEMO3 connector.
Is the headset sweat-resistant?
A hydrophobic coating is applied to better withstand sweat during intense performances. Windshields are provided for both indoor and outdoor use.
What is the maximum sound pressure level this microphone can handle?
The maximum sound pressure level is specified at 134 dB SPL. The frequency response ranges from 70 Hz to 20 kHz, with a sensitivity of -40 dBV/Pa.



