How Can We Help?
Shure BLX14R/MX53-J11 Wireless Rack-mount Presenter System with MX153 Earset Microphone (J11 Frequency Band)
Expected May 31, 2025
Only at IDJ NOW
Fast Shipping
Most products ship same-day
30-Day Price Protection
Find a lower price, you're covered.
5000+ Reviews
90%+5-star reviews
30-Day Returns
Don't Like it? Return it.
Making the jump to wireless should be liberating, not challenging. Shure BLX Wireless Systems combine professional quality sound with simple setup and an intuitive interface for performance you can trust right out of the box. Precision built and available in a variety of handheld, lavalier, instrument and headset configurations, it's the most accessible way to own the stage.
The Shure Microflex MX153 is a professional subminiature earset microphone ideal for speech and other applications requiring low-profile discreet placement where improved gain before feedback over lavalier microphones is desired. With rack-mount analogue wireless transmission. 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. 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.
Shure BLX14R/MX53 Wireless Rack-Mount Presenter System Features:
- Up to 12 compatible systems per frequency band (region dependent.)
- Microprocessor-controlled internal antenna diversity.
- One-touch QuickScan frequency selection quickly locates the best frequency.
- 1/4" and XLR audio outputs.
- Two color audio status indicator LED.
- Adjustable output level.
- Removable antennas for quick antenna distribution.
- LCD display with detailed RF and audio metering.
- Rugged metal construction, rack mount hardware included.
- The Shure Microflex MX153 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.
Shure BLX14R/MX53 Specifications:
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.
BLX1
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: 4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm) H x W x D
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)
Audio Input Level:
0dB: -20 dBV maximum
-10dB: -10 dBV maximum
Gain Adjustment Range: 10 dB
RF Transmitter Output: 10 mW, typical (varies by region)
Dimensions: 8.82 in. X 2.09 in. (224 mm X 53 mm) L x Dia.
Weight: 7.7 oz. (218 g) without batteries
Housing: Molded ABS
Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline
Battery Life: up to 14 hours (alkaline)
BLX4R
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: 1.57 in. X 7.40 in. X 4.06in. (40 mm X 188 mm X 103 mm) H x W x D
Weight: 8.5 oz. (241 g)
Housing: Molded ABS
Power Requirements: 12–15 V DC @ 235 mA (BLX88, 320 mA), supplied by external power supply (tip positive)
MX153
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 [2])
2500 Ω load: 107 dB SPL
1000 Ω load: 107 dB SPL
Signal-To-Noise Ratio [3]: 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): N/A
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
[1] = Pa=94 dB SPL
[2] = THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
[3] = S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
Each BLX14R/MX53 Retail Box Includes:
(1) BLX1 Bodypack Transmitter
(1) BLX4R single-channel rack mount receiver
(1) MX153 earset microphone
(1) Protective storage pouch
(3) Windscreens
(1) Collar clip
(1) 53A8611 Rack Mount Bracket
(1) 53A8612 Long Rack Mount Bracket
(1) 53B8443 Link Bracket
(1) 90AZ8100 Hardware Kit
(1) 31B1856 Thread Adapter
(2) 95A8699 Antenna/BNC,1/4 Wave
(2) 95A8994 Adapter, Bulkhead, BNC
(1) 95B2313 Bag Vinyl, Zippered
(2) 95K2035 Cable, BNC, 22"
(1) PS24 Power Supply
(2) AA batteries
(1) User Guide