The BLX Vocal Wireless System from Shure joins world-class design and construction with simple and easy setup and operation, featuring QuickScan frequency selection and the precision-engineered Beta 58A® vocal microphone capsule for optimized for lead vocal performance. Legendary sound and performance, right out of the box.

Included: BLX4 single channel wireless receiver; BLX2 handheld transmitter with
integrated Beta 58A® supercardioid dynamic microphone capsule; microphone clip; padded zipper case; PS23 power supply , WA621 color id caps and URT2 rack tray (optional accessories).

Components

• BETA58A with BLX2 Handheld Transmitter
• BLX4 Single Channel Receiver

Features

BLX2 Handheld Transmitter:

• Integrated microphone capsule design, featuring trusted PG58, SM58® or Beta 58A options
• -10 dB gain attenuation
• Lightweight, rugged construction
• Color ID caps (available separately)

BLX4 Single Channel Receiver:

• One-touch QuickScan frequency selection quickly locates the best open frequency (in case of interference)
• Up to 12 compatible systems per frequency band (region-dependent)
• Two-color audio status indicator LED
  • Green: Normal audio levels
  • Red: Excessive audio levels (overload/clipping)
• XLR and ¼” output connectors
• URT2 Rack Tray ( available separately for BLX4 and BLX88)

Tech Specs

• Compatible systems per frequency band: 12
• Auto Setup Features: Group Scan/ Channel Scan
• Audio Reference Companding: Yes
• Included Antennas: Internal antenna
• Antenna Options: Yes
• PC Control: No
• Receiver Network Ability: No
• Rack Hardware: URT2
• Case: Molded ABS
• Transmitter Display: LED
• Receiver Display: Multi-color LED & channel display
• Battery, Endurance: 2AA: 14 h
• Environment: Karaoke, Music Clubs, Corporation, Hotels, House of worship, Small Rental Houses, Schools

Further Technical Specs

BETA58A with BLX2 Handheld Transmitter

• Audio Input Level
  • gain 0dB -20 dBV maximum 
  • gain -10dB -10 dBV maximum
• Gain Adjustment Range : 10 dB
• RF Transmitter Output
  • 10 mW, typical
  • varies by region
• Dimensions : 224 mm X 53 mm dia. (8 7/8 X 2 1/8 in.)
• Weight : 218 g (7.7 oz.) (without batteries)
• Housing : Molded ABS
• Power Requirements : 2 LR6 AA batteries, 1.5 V, alkaline
• Battery Life : up to 14 hours (alkaline)

BLX4 Single Channel 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 188 mm X 103 mm (H x W x D)
• Weight : 241 g (8.5 oz.)
• Housing : Molded ABS
• Power Requirements : 12–15 V DC @ 160 mA (BLX88, 320 mA), supplied by external power supply (tip positive)