SHURE SM39-LM3SM39 cardioid headband microphone - LM3

Whether you're making your mark on a huge stage or captivating an intimate audience, the SM39 ensures flawless vocal precision. Designed for those who need mobility and consistent sound, this headset is the ultimate tool for ensuring outstanding performance.


Axient Digital compatibility
Integrates seamlessly with Axient Digital and all Shure wireless systems for reliable performance at every gig.
Secure and discreet
Holds the microphone securely in place thanks to a flexible, adjustable arm, ensuring perfect microphone placement without restricting movement.

Superior sound quality
Delivers clear vocals thanks to a cardioid polar pattern and off-axis rejection of over 20 dB, guaranteeing exceptional sound even in the noisiest environments.

Ergonomic design for lasting comfort
Naturally conforms to the ear and jaw, with its low-profile design allowing performers to wear it comfortably for long periods.

Performance in all environments
Louvered with windscreens for indoor and outdoor use to ensure clear sound anytime, anywhere.

Durable and sweat-resistant
Featuring a hydrophobic coating that protects against perspiration, it maintains high-quality sound during intense performances.

- Accessories included: windscreen, clothing clip

- Capsule: electret

- Category: vocal mic

- Connectivity: lemo3

- Color: Black

- Directivity: cardioid

- Rated impedance: 95 Ω

- Switch: No

- Clamp included: Yes

- Weight (kg): 54 g

- Frequency response: 70 Hz - 20 kHz

- SPL max: 134 dB

- Sensitivity: -40 dBV/Pa

- Type: headband

- Additional specs:

- Type: Electret condenser

- Directivity: Cardioid

- Frequency response: 70 Hz to 20 kHz

- Output impedance: 95 Ω (at1 kHz, with RPM400 preamp)

- Sensitivity:

SM39-TQG: -47 dBV/Pa

SM39-LEMO: -40 dBV/Pa

- Maximum SPL:

SM39-TQG: 144 dB SPL

SM39-LEMO: 134 dB SPL

- Signal-to-noise ratio:

SM39-TQG: 71 dB

SM39-LEMO: 72 dB

- Dynamic range:

SM39-TQG: 121 dB

SM39-LEMO: 112 dB

- Clean Noise:

SM39-TQG: -118 dBV-A

SM39-LEMO: -112 dBV-A

- Equivalent Output Noise:

SM39-TQG: 23 dB SPL-A

SM39-LEMO: 22 dB SPL-A

- Polarity: Positive pressure on the diaphragm produces a positive voltage on pin 3 relative to pin 1.

- Cable: 1.5 m

- Connector: TA4F (TQG) or LEMO

- Power supply recommendations: +5 V DC (recommended operating voltage on pin 2 of microphone connector relative to pin 1).

- Net weight:

SM39-TQG: 55g

SM39-LEMO: 54g