SHURE BLX24E/B58-K14

Professional UHF wireless vocal system with Beta 58A supercardioid capsule

SHURE The BLX24E/B58-K14 is a high quality wireless microphone system designed for professional vocal performances, concert stages, sound companies and corporate events. The system combines the BLX4 receiver with the BLX2/Beta58A handheld transmitter and offers excellent sound quality, high feedback resistance and reliable wireless operation.

At the heart of the set is the legendary Beta 58A capsule, which uses a neodymium magnet and supercardioid directivity for maximum separation of vocals from ambient noise. Thanks to the higher sensitivity and extended frequency range, the Beta 58A provides a more detailed and clear sound compared to the standard SM58.

The system uses the proven QuickScan technology, which automatically finds the most suitable free frequency and facilitates tuning even in a busy RF environment.

Main features

• Analog UHF wireless system
• BLX4 Diversity receiver
• BLX2 handheld transmitter
• Shure Beta 58A dynamic capsule
• Supercardioid directivity
• QuickScan automatic frequency scan
• Up to 12 compatible systems simultaneously
• Operating range up to 100 m
• Up to 14 hours of operation with AA batteries
• Balanced XLR output
• Unbalanced 6.3 mm Jack output
• Suitable for professional stage applications

Technical characteristics of the system

• Model: BLX24E/B58-K14
• Frequency band: K14
• Operating frequency range: 614 – 638 MHz
• System Type: Analog UHF Wireless
• Working range: up to 100 m
• Audio frequency response: 50 Hz – 15 kHz
• Dynamic range: 100 dB A-weighted
• Total Harmonic Distortion (THD): < 0.5%
• RF stability: ±10 ppm
• Maximum number of compatible systems: up to 12
• Operating temperature: -18°C to +57°C

BLX4 Receiver

• Type: Single Channel Diversity Receiver
• Built-in antennas
• QuickScan automatic frequency selection
• LED indication of RF signal
• LED indication for audio signal
• Outputs:
  • XLR balanced
  • 6.3 mm TS Jack unbalanced
• Power supply:
  • 12 – 15 V DC
• Consumption:
  • 150mA
• Dimensions:
  • 188 × 103 × 40 mm
• Weight:
  • 241 g

BLX2/Beta 58A Transmitter

• Type: Handheld Wireless Transmitter
• RF output power: 10 mW
• Power supply:
  • 2 x AA batteries
• Working hours:
  • until 2 p.m
• Dimensions:
  • 224 × 53 mm
• Weight:
  • 340 g

Technical characteristics of the Beta 58A microphone

• Microphone type: Dynamic
• Polar characteristic: Supercardioid
• Frequency range: 50 Hz – 16 kHz
• Sensitivity: -51.5 dBV/Pa (2.66 mV)
• Output Impedance: 290 Ω
• Neodymium magnet
• Hardened steel grid
• Advanced anti-shock system
• Increased presence in the mid and high frequencies
• Excellent suppression of background noise
• High resistance to acoustic feedback

Advantages of Beta 58A

Compared to the standard SM58, the Beta 58A offers a higher output level, better separation of vocals from stage noise and greater clarity in live performances. The supercardioid directivity makes it particularly suitable for stages with high sound pressure levels and powerful monitor systems.

Applications

• Professional concert stages
• Touring productions
• Sound companies
• Vocalists and solo artists
• Clubs and concert halls
• Corporate events
• Churches and religious institutions
• Premium karaoke systems

The set includes

• 1 x BLX4 receiver
• 1 x BLX2/Beta 58A hand transmitter
• 1 x power adapter
• 1 x microphone holder
• 2 x AA batteries
• Documentation

FAQ

What is the difference between Beta 58A and SM58?
Beta 58A uses supercardioid directivity, has higher sensitivity, wider frequency range and better side noise suppression than SM58.

Is the system suitable for professional gigs?
Yes. This is one of the most preferred configurations for professional vocal performances and stage applications.

What is the maximum operating range?
Up to 100 meters with direct line of sight between transmitter and receiver.

How many systems can run simultaneously?
Up to 12 compatible BLX systems can operate simultaneously with proper frequency coordination.

How long do the batteries last?
Up to 14 hours of continuous operation with two AA alkaline batteries.

Is it suitable for noisy scenes?
Yes. Thanks to its supercardioid directivity and high output level, the Beta 58A is particularly effective when working in high sound pressure stages and multiple monitor lines.