Product Overview
The Shure BLX14R/MX53 Wireless Headset System from Shure joins world-class design and construction with simple and easy setup and operation, featuring QuickScan frequency selection and the discreet MX153T/O-TQG earset microphone for spoken word applications. Legendary sound and performance, right out of the box.
For performers who wish to unplug from the wire, BLX Wireless Systems are the clearest choice. Shure delivers wireless confidence with legendary sound from industry-renown microphones, decades of wireless design proficiency and world-class construction. Available in a wide offering of bodypack and handheld configurations
Includes
- MX153 Earset Microphone
- BLX1 Bodypack Transmitter
- BLX4R Rack-mount Receiver
- Single and dual rackmount kit
- Thread Adapter
- (2) 1/4 wave antennas
- (2) BNC Bulkhead Adapters
- 22 in. BNC Cable
- Zipper bag
- Power supply
- (2) AA batteries
Features
- BLX4R Single Channel Rackmount 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 1/4" output connectors
- Adjustable output level
- Removable antennas for quick antenna distribution
- LCD display with detailed RF and audio metering
- Rugged metal construction, rack mount hardware included
- BLX1 Bodypack Transmitter:
- TQG connection for use with Shure lavalier, headset, earset, and instrument microphones and guitar cables
- Tactile on and off switch
- Adjustable gain control
- Lightweight, rugged construction
- Up to 14 hours of continuous use (2x AA batteries included)
- Up to 300 feet (100m) transmission radius (line of sight)
- Quick and easy frequency matching (GROUP and CHANNEL selection buttons)
- Two-color transmitter status indicator LED:
- Green: “Ready”
- Rapidly Flashing Red: “Controls Locked”
- Solid Red: “Battery Power Low” (less than1 hour remaining)
- Flashing Red/Power Down: “Batteries Dead” (replace batteries to repower transmitter
- MX153 Earset Microphone
- 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
Specifications
- BLX System:
- Working Range: 91 m (300 ft) Line of Sight (actual range depends on RF signal absorption, reflection and interference)
- Audio Frequency Response: 50 to 15,000 Hz (dependent on microphone type)
- Total Harmonic Distortion, Ref. ±33 kHz deviation with 1 kHz tone: 0.5%, typical
- Dynamic Range: 100 dB, A-weighted, typical
- Operating Temperature: -18°C (0°F) to 57°C (135°F) (battery characteristics may limit this range)
- Polarity: Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low-impedance output) and the tip of the high impedance 1/4-inch output.
- 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 (H x W x D): 1.65 in. X 7.80 in.X 6.42 in. (42 mm X 198 mm X 163 mm)
- Weight, without antennas: 2.2 lbs (998 g)
- Housing: Molded ABS, steel
- Power Requirements: 12–15 V DC @ 260 mA, supplied by external power supply (tip positive)
- BLX1 Bodypack Transmitter:
- Audio Input Level
- 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 (H x W x D): 4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm)
- Weight: 2.6 oz. (75 g), without batteries
- Housing: Molded ABS
- Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
- Battery Life: up to 14 hours (alkaline)
- MX153 Earset Microphone:
- Transducer Type: Electret Condenser
- Polar Pattern: Omnidirectional
- Frequency Response: 20 to 20,000 Hz
- Output Impedance: N/A
- Sensitivity, open circuit voltage, @ 1 kHz, typical: -41 dBV/Pa [1] (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
- Common Mode Rejection: 20 to 20,000 Hz
- 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
