Lectrosonics SMWB Digital Hybrid Wireless Transmitters

1,704.00 USD

Lectrosonics SMWB — To meet the demand for both extended operating range and extended battery life, the “WB” series SM transmitters offer selectable output power of 25, 50 and 100 mW.

Unavailable for shipping outside of The United States and Canada.

SKU: LECSMWB Categories: , , Tag:


Lectrosonics SMWB Digital Hybrid Wireless Transmitters

To meet the demand for both extended operating range and extended battery life, the “WB” series SM transmitters offer selectable output power of 25, 50 and 100 mW. With higher power output, the operating range is improved at the expense of battery life. When range is not an issue, a lower power level can be used to extend the battery life.

The transmitters offer hands free setup and adjustment using audible tones. They can be put to sleep to conserve battery power during setup while buried inside costuming, then awakened for normal operation when the production begins. Other features include input gain adjustment in 1 dB increments over a 44 dB range and adjustable low frequency audio roll-off for 3 dB down points at 35, 50, 70, 100, 120 or 150 Hz to control subsonic and very low frequency audio content.

The DSP-based design works with all Digital Hybrid receivers and is backward compatible for use with Lectrosonics 200 and 100 Series, IFB receivers and some analog receivers from other manufacturers in addition to its native Digital Hybrid Wireless® operating mode.

The input section features the unique Lectrosonics servo bias input circuitry with a standard TA5M type jack for use with electret lavaliere mics, dynamic mics, or line level signals. A DSP-controlled analog audio limiter is employed ahead of the first mic preamp to protect the entire audio chain from overload. The limiter has a range of more than 30 dB for excellent overload protection, and a dual release envelope that makes the limiter acoustically transparent while maintaining low distortion of brief transients and longer duration peaks.

A water-resistant control panel with LCD, membrane switches and multi-color LEDs make input gain adjustments, frequency and compatibility mode selection quick and accurate. The battery compartment accepts lithium AA batteries.

The SMWB housing is machined from solid aluminum blocks to provide an extremely lightweight and rugged package. A special non-corrosive finish resists saltwater exposure and perspiration in extreme environments.

Alternate Recording Function

Instead of transmitting, the SMWB may also be used as a recorder. The industry standard .wav (BWF) file format is compatible with essentially any audio or video editing software.

NOTE: The transmitting and recording functions cannot be done simultaneously. Users must choose to transmit or record.

Frequency Tuning Range

RF-intense multichannel and mobile venues must have a broad selection of frequencies available to alleviate interference problems, especially with the emergence of DTV telecasts. 3072 frequencies are selectable in 25 or 100 kHz steps across the broad tuning range of each frequency band.

Key Features:

  • Selectable output power to maximize battery life or operating range
  • Ultra-lightweight, corrosion resistant housing
  • Water resistant seals for use in damp environments
  • LCD interface with lockout option
  • Programmable compatibility modes for use with a wide variety of different receivers
  • Servo Bias input circuitry
  • IR (infrared) port for fast setup
  • Covers 3 standard frequency blocks
  • Update firmware in the field via Micro SD card reader
  • Alternate use as recorder on internal MicroSDHC memory card
Channel Spacing: Selectable; 25 or 100 kHz
Frequency selection: Control panel mounted membrane switches
RF Power output: Switchable; 25, 50 or 100 mW
Compatibility Modes:
  • Digital Hybrid Wireless® (NU Hbr)
  • 200 Series
  • 100 Series
  • Mode 3
  • Mode 6
  • IFB
Pilot tone (Digital Hybrid Mode): 25 to 32 kHz; 5 kHz deviation
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (Digital Hybrid Mode)
Spurious radiation: Compliant with ETSI EN 300 422-1
Equivalent input noise: –125 dBV, A-weighted
Input level:  
If set for dynamic mic:
  • 0.5 mV to 50 mV before limiting
  • Greater than 1 V with limiting
If set for electret lavaliere mic:
  • 1.7 uA to 170 uA before limiting
  • Greater than 5000 uA (5 mA) with limiting
Line level input:
  • 17 mV to 1.7 V before limiting
  • Greater than 50 V with limiting
Input impedance:  
Dynamic mic: 300 Ohms
Electret lavaliere: Input is virtual ground with servo adjusted constant current bias
Line level: 2.7 k ohms
Input limiter: Soft limiter, 30 dB range
Bias voltages:
  • Fixed 5 V at up to 5 mA
  • Selectable 2 V or 4 V servo bias for any electret lavaliere
Gain control range: 44 dB; panel mounted membrane switches
Modulation indicators:
  • Dual bicolor LEDs indicate modulation
  • –20, -10, 0, +10 dB referenced to full modulation
Controls: Control panel w/ LCD and 4 membrane switches
Low frequency roll-off: Adjustable from 35 to 150 Hz
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB
Signal to Noise Ratio (dB) (overall system, 400 Series mode):
  • Smart NR OFF: (No Limiting 103.5) (w/Limiting 108.00)
  • Smart NR Normal: (No Limiting 107.0) (w/Limiting 111.5)
  • Smart NR Full: (No Limiting 108.5) (w/Limiting 113.0)
(Note: the dual envelope “soft” limiter provides exceptionally good handling of transients using variable attack and release time constants. The gradual onset of limiting in the design begins below full modulation, which reduces the measured figure for SNR without limiting by 4.5 dB)  
Total Harmonic Distortion: 0.2% typical (400 Series mode)
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Flexible, unbreakable steel cable.
Lithium Battery Life:
  • 50 mW (2 AA): 14.5 hrs
  • 100 mW (2 AA): 14 hrs
Weight (w/ litium batteries):
  • SMWB: 2.7 oz.. (75.9 grams)
  • SMDWB: 3.7 oz.. (105 grams)
Overall Dimensions (without microphone):
  • SMWB: 2.3 x 1.8 x 0.64 inches; 58 x 46 x 16 mm
  • SMDWB: 2.3 x 2.4 x 0.64 inches; 58 x 60 x 16 mm
Emission Designator: 180KF3E
Storage media: microSDHC memory card
File format: .wav files (BWF)
A/D converter: 24- bit
Sampling rate: 44.1 kHz
Recording modes/Bit rate:  
HD mono mode:
  • 24 bit - 144 kbytes/s
  • 32 bit - 192 kbytes/s
Split gain mode:
  • 24 bit - 288 kbytes/s
  • 32 bit - 384 kbytes/s