Product Specifications

SM31FH Fitness Headset Condenser Microphone

Overview

The new SM31FH adds hydrophobic materials to the industry-standard, road-tested Shure SM family in a rugged and durable cardioid condenser microphone. TA4F 4-pin connectors make it a viable replacement for any existing Shure wireless headset system, and is also available with BLX and GLX-D wireless system bundles. The moisture-repelling cartridge housing protects the microphone and ensures a long lifetime of use, all but eliminating the need to frequently replace typical headsets.

Features

• Wearable wireframe headset with secure, comfortable fit made for fitness and aerobics instructors

• Integrated moisture-repelling hydrophobic fabric protects the microphone element from harmful corrosion for use in humid environments

• Flexible gooseneck design provides discrete adjustment options to optimize placement for greatest isolation

• Lightweight and low-profile form factors stave off fatigue during high-impact use

• Compatible with Shure wireless bodypack systems for direct replacement of TA4F-connected microphones

• Available with a wide variety of Shure wireless systems, renowned for their ease of use and reliable performance

• Included windscreen tames plosive, breath and wind noise for clean and intelligble sound

• Tailored frequency response refined for crisp and clear vocal reproduction

• Legendary Shure precision engineering for durability and performance

Available Models

SM31FH

SM31FH-TQG

Fitness Headset Cardioid Condenser Microphone with Windscreen

BLX1288/SM31

BLX Dual-Channel Wireless Combo System

BLX14/SM31

BLX Wireless Headset System

 

 

BLX188/SM31

BLX Dual-Channel Wireless Headset System

 

 

GLXD14/SM31

GLX-D Digital Wireless Headset System

Specifications

Type

Electret Condenser

Frequency Response

45 to 20,000 Hz

 

 

Polar Pattern

Unidirectional (Cardioid)

Output Impedance

600 Ω

@ 1 kHz

 

Audio Output Level

-50 dBV/Pa

 

 

Signal-To-Noise Ratio[1]

66 dB

@ 1 kHz

 

 

 

Maximum SPL[1]

145.0 dB

1000 Ω load, @ 3% THD

 

 

 

Dynamic Range[1]

117.0 dB

@ 1 kHz, 1000 Ω load

 

 

 

Equivalent Output Noise[1]

28 dB

Typical, A-Weighted

 

 

 

Power Requirements

+5 V DC (nominal), 10 V maximum (DC bias)

 

 

Polarity

Positive pressure on diaphragm produces positive voltage on pin 3 with respect to pin 1

Cable

1.1 m (45 in.)

 

 

Connector

TA4F

Net Weight

60 g (2.11 oz.)

 

[1]Measurements taken using RK100PK preamp set @ 0 dB using 8k bias resistor.

* All specifications measured with a

48 VDC phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.

Optional Accessories

RK379 Replacement kit with clip + 2 foam windscreens

Polar Patterns

Frequency Response

dB

20

15

10

5

0 -5 -10 -15 -20 -25 -30

20

100

1k

10k

20k

Hz

125 Hz

 

1,000 Hz

 

0.6 m (2 ft.) from sound source

1 cm (0.4 in) from sound source

 

 

250 Hz

 

5,000 Hz

 

 

 

 

 

500 Hz

 

10,000 Hz

 

 

 

www.shure.com

©2013 Shure Incorporated

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Shure SM31FH specifications Overview, Features, Available Models, Specifications, Optional Accessories

SM31FH specifications

The Shure SM31FH is a headset microphone that has garnered acclaim for its reliability, sound quality, and design, making it an ideal choice for active performers and presenters. Built with Shure's renowned commitment to quality, the SM31FH is designed to perform in a variety of environments, especially in applications such as fitness instruction, theater, and public speaking.

One of the key features of the SM31FH is its lightweight and comfortable design. The headset is constructed to provide a secure fit, ensuring that it remains in place during vigorous movement without causing discomfort. This is particularly important for fitness instructors who need a microphone that will stay on their head even during intense workouts.

Audio quality is another standout characteristic of the SM31FH. It utilizes a cardioid pickup pattern which helps to minimize background noise, isolating the speaker's voice for greater clarity. This feature is especially valuable in noisy environments, allowing for a focused audio experience. The microphone is also equipped with Shure's advanced audio technologies, such as frequency response optimization, which enhances vocal clarity and presence.

A notable technology incorporated into the SM31FH is its moisture-repellent design. The microphone features a protective cover that shields its internal components from sweat and humidity, making it ideal for use in fitness and outdoor settings. This moisture resistance ensures durability and longevity, reducing the risk of performance interruptions.

The SM31FH is compatible with a range of wireless systems, enhancing its versatility. It typically comes with multiple connector options that allow it to interface smoothly with various Shure wireless transmitters, making setup and operation straightforward and efficient.

In summary, the Shure SM31FH headset microphone offers a robust solution for those seeking high-quality audio performance in demanding situations. Its comfortable design, cardioid pickup pattern, moisture resistance, and compatibility with various wireless systems make it an exceptional choice for instructors, performers, and presenters alike. The SM31FH stands out as a dependable tool in the world of audio, combining functionality and innovation to meet the needs of its users.