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Shure BLX188UK/SM31 SM Wireless Dual Fitness Headset System

£649.00  £599.00
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  • Manufactured by: Shure


The SM Wireless Dual Headset System with two SM31FH fitness headsets features a durable, industry-standard microphone cartridge in a comfortable headset design for hands-free performance combined with simple setup and an intuitive interface for performance you can trust. Features analogue dual wireless transmission.

What is the SM31FH best suited to?

The new SM31FH adds hydrophobic materials to the industry-standard, road-tested Shure SM family in a rugged and durable cardioid condenser microphone. 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.
How does it sound?

A tight, unidirectional (cardioid) pickup pattern provides excellent rejection of off-axis sound sources to prevent feedback and the tailored frequency response ensures crisp and clear vocal reproduction
What receiver comes with the SM Wireless Headset System?

The SM Wireless Dual Presenter System comes with the Analogue Wireless Dual Receiver BLX88 that provides improved linearity and frequency response.

The receiver BLX88 is ready to perform right out of the box and is the clearest choice for performers who wish to go wireless.
How many presenters can use this system simultaneously?

Up to 12 compatible channels per group with group and channel scan for easy set-up.
Why internal antennas?

For ideal signal strength, antennas on a wireless system need to be set up in a certain way. The internal antennas on the BLX receiver are already set in this ideal way, offering up to 100 m operating range and optimal signal strength.

Additionally internal antennas cannot be broken during setup, use or transport.
Is the setup really that easy?

Yes, with one button you can start the group and channel scan, which gives you the best open frequency. Adjust the transmitter to the same channel and you’re ready to go.
What does “Linearity” mean?

The proportion between input signal of the transmitter and output signal of the receiver is always constant.

Industry-standard professional microphones for daily touring, club and studio performances.
SM31FH Fitness Headset Microphone

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 provides discrete adjustment options to optimise 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 range of Shure wireless systems, renowned for ease of use and reliable performance
Included windscreen tames plosive, breath and wind noises for clean and intelligible sound
Tailored frequency response refined for crisp and clear vocal reproduction
Legendary Shure precision engineering for durability and performance

BLX1 Bodypack Transmitter

Power and battery status LED
Adjustable gain control
Quick and easy frequency matching
AA batteries (included) provide up to 14 hours of continuous use
100 m (300 ft.) operating range (line of sight)

Receiver BLX88

Up to 12 compatible systems (region dependent)
Microprocessor-controlled internal antenna diversity
One touch QuickScan locates the best open frequency
¼" and XLR audio outputs
Two color audio status indicator LED

Furnished Accessories

Power supply PS23E


System technical specifications

Compatible systems per frequency band (up to): 12
Selectable frequencies: Up to 150
Auto Setup Features: QuickScan : Finds group with most compatible frequencies and sets to best frequency
Audio Reference Companding: Yes
Included Antennas: BLX4, BLX88: Internal, BLX4R: Detachable
Antenna Options: No
Receiver Network Ability: No
PC Control: No
Rack Hardware: URT2 (not included), Rack mount brackets (only with rackable/BLX-R Sets)
Case: Included Only with BLX4 Sets
Transmitter Display: LED
Receiver Display: BLX4, BLX88: LED, BLX4R: High-resolution LCD screen
Battery, Endurance: 2AA, up to 14h
Environment: Daily Touring

Further Technical Specs

Operating Range: 91 m ( line of sight - actual range depends on RF signal absorption, reflection and interference)
Available Frequencies: Between 524–865 MHz (available frequencies depend on applicable regulations in country where system used)
Audio Range: 50–15,000 Hz (dependent on microphone type)
Transmitter RF Output Power: 10 mW, typical (varies by region)
Audio Output Connector: XLR and 1/4" (6.3 mm) unbalanced Maximum Output Level: -27 dBV (XLR, mic level), -13 dBV (1/4")
Battery Life: Up to 14 hours
Dynamic Range: 100 dB A-weighted
System Distortion: 0.5% THD typical (ref. +/- 38 kHz deviation, 1 kHz tone)
Operating Temperature Range: -18°C (0°F) – +50°C (122°F)
Power Requirements: BLX1, BLX2: 2 AA alkaline or rechargeable batteries
BLX88: 12–18 V DC at 320 mA, supplied by external power supply

Component Specifications:
BLX88 Dual Receiver

Output Impedance:
- XLR connector: 200 Ω
- 6.35 mm (1/4") connector: 50 Ω
Audio Output Level Ref. ±33 kHz deviation with 1 kHz tone:
- XLR connector –27 dBV (into 100 kΩ load)
- 6.35 mm (1/4") connector –13 dBV (into 100 kΩ load)
RF Sensitivity: 105 dBm for 12 dB SINAD, typical
Image Rejection: >50 dB, typical
Dimensions: 40 mm X 388 mm X 116 mm (H x W x D)
Weight: BLX88 429 g
Housing: Molded ABS
Power Requirements: 12–15 V DC @ 320 mA, supplied by external power supply (tip positive)

BLX1 Bodypack Transmitter

Audio Input Level:
- gain max: -16 dBV maximum
- gain min (0 dB): +10 dBV maximum
Gain Adjustment Range: 26 dB
Input Impedance: 1 MΩ
RF Transmitter Output: 10 mW, typical, varies by region
Dimensions: 110 mm x 64 mm x 21 mm (H x W x D)
Weight: 75 g, without batteries
Housing: Molded ABS
Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
Battery Life: up to 14 hours (alkaline)

This product was added to our catalog on Thursday 23 October, 2014.

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