Description
The BLX14R/MX53 Headworn Wireless System is part of the BLX wireless systems family. Shure BLX Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage.
It includes MX153 earset microphone, BLX1 bodypack transmitter, BLX4R rack mount receiver, single and dual rackmount kit, two 1/4 wave antennas, zipper bag, power supply, 2 AA batteries, and user guide.
BLX1 Bodypack Transmitter
The durable BLX1 features a lightweight, ergonomic design and adjustable gain control. For use with BLX Wireless Systems. It supports up to 14 hours of continuous use with 2 AA batteries. 300 ft (100 m) transmission radius.
Features
- Quick and easy receiver frequency matching
- TQG connection for use with Shure lavalier, headset, earset and instrument microphones and guitar cables
- Easily accessible On / Off switch
BLX4R Rack Mount Receiver
Rack-mountable and featuring rugged metal construction, the BLX4R offers simple setup and intuitive controls. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference. Removable antennas allow for quick antenna distribution. For use with BLX Wireless Systems. Rack mount kit is included.
Features
- XLR and ¼" output connectors
- Microprocessor-controlled internal antenna diversity
- Two-color audio status indicator LED
- Green: Normal audio levels
- Red: Excessive audio levels (overload / clipping)
- Adjustable output level
- LCD display with detailed RF and audio metering
MX153 Earset Headworn Microphone
The Shure Microflex MX153 provides outstanding clarity in an extremely comfortable over-the-ear design. This professional subminiature earset microphone is ideal for applications in which improved gain before feedback over lavalier microphones is desired. Delivering exceptional speech clarity, the MX153 is ideal for corporate presentations, houses of worship, A / V conferencing, and live sound reinforcement.
Features
- Subminiature omnidirectional cartridge offers superior clarity and enhanced plosive protection with no proximity effect
- Terminated with TQG / TA4F connector for direct connectivity to Shure wireless bodypack transmitters
- Ultra-lightweight, comfortable, flexible design is stable and easy to place over either ear
- CommShield Technology guards against interference from cellular RF devices and digital bodypack transmitters
- Kevlar reinforced soft flex cable
- Includes protective storage pouch, 3 windscreens, and collar clip
Specifications
Overall System Specifications
- Operating Range: 300 ft (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)
BLX1 Bodypack Transmitter
- Audio Input Level
- Gain max -16 dBV maximum; 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 (2.6 oz.), without batteries
- Housing Molded ABS
- Power Requirements 2 LR6 AA batteries, 1.5 V, alkaline
- Battery Life up to 14 hours (alkaline)
BLX4R Rack Mount 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 –20.5 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 50 mm X 198 mm X 163 mm H x W x D
- Weight without antennas 998 g (2.2 lb.)
- Housing Molded ABS, steel
- Power Requirements 12–15 V DC @ 260 mA, supplied by external power supply (tip positive)
MX153 Earset Microphone
- Transducer Type Electret Condenser
- Polar Pattern Omnidirectional
- Frequency Response 20 to 20,000 Hz
- Sensitivity open circuit voltage, @ 1 kHz, typical -41 dBV/Pa (9 mV/Pa)
- Maximum SPL 1 kHz at 1% THD
- 2500 Ω load: 107 dB SPL
- 1000 Ω load: 107 dB SPL
- Signal-To-Noise Ratio 60 dB
- Dynamic Range @ 1 kHz
- 2500 Ω load: 73 dB
- 1000 Ω load: 73 dB
- Self Noise equivalent SPL, A-weighted, typical 34 dB
- Operating Temperature Range -18°C (0°F) to 57°C (135°F)
- Polarity Positive pressure on diaphragm produces negative voltage on pin 3 with respect to pin 1.
- Power Requirements +1–5 V DC (500 μA max.)
- Weight 19.76 g
