Lectrosonics SMDWB Wideband Beltpack Transmitter (B1: 537.600 to 614.375)

BH #LESMDWBB1 • MFR #SMDWB-B1
Lectrosonics
Lectrosonics SMDWB Wideband Beltpack Transmitter (B1: 537.600 to 614.375)
Key Features
  • For Broadcast, EFP and ENG Applications
  • Beltpack Transmitter
  • Alternate Recording Function
  • 35 Hz to 20 kHz Frequency Range
The Lectrosonics SMDWB is a wireless beltpack transmitter that can also act as a recording device, capturing audio onto microSDHC cards. Paired with a lavalier or dynamic microphone, the transmitter is suitable for ENG (Electronic News Gathering), EFP (Electronic Field Productions), interviews for broadcast TV, and more. It provides Digital Hybrid Wireless technology, combining 24-bit digital-audio processing with an analog FM radio link to give you the benefits of both worlds, such as fewer dropouts and audio artifacts while maintaining a robust range of operation. The transmitter is housed in a machined aluminum case, lending the unit a rugged and dependable shell. Its water-resistant control panel adds to its usability.
More on the Way
Expected availability: 7-14 business days
$1,639.00

Lectrosonics SMDWB Wideband Beltpack Transmitter (B1: 537.600 to 614.375)

Deesh P., B&H Pro Audio Expert

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Lectrosonics SMDWB Overview

The Lectrosonics SMDWB is a wireless beltpack transmitter that can also act as a recording device, capturing audio onto microSDHC cards. Paired with a lavalier or dynamic microphone, the transmitter is suitable for ENG (Electronic News Gathering), EFP (Electronic Field Productions), interviews for broadcast TV, and more. It provides Digital Hybrid Wireless technology, combining 24-bit digital-audio processing with an analog FM radio link to give you the benefits of both worlds, such as fewer dropouts and audio artifacts while maintaining a robust range of operation. The transmitter is housed in a machined aluminum case, lending the unit a rugged and dependable shell. Its water-resistant control panel adds to its usability.

Operating in the B1 range (537.600 to 614.375), the transmitter offers selectable outputs to bolster its operating range, specifically among 25, 40, and 100mW. At lower values, the transmitter’s battery life will last longer; at higher values, the operating range is increased, though at the expense of battery life. Lightweight at 3.7 oz, the transmitter boasts settings making it compatible with dynamic microphones, electret lavaliers, and even line-level sources—so long as they can plug into the TA5M 5-pin input connector.

Input gain adjustment is possible in 1 dB increments for a total range of 44 dB. You’ll also note the low-pass filters, which can be switched to roll off at 30, 50, 70, 120, or 150 Hz to mitigate low-end disturbances. This input section also boasts servo-bias input circuitry proprietary to Lectrosonics, as well as an analog limiter controlled with DSP that, sitting ahead of the mic preamp itself, protects the audio path from overload. With its dual release envelope, it maintains acoustic transparency, even though it can achieve over 30 dB of gain reduction.

The SMDWB utilizes DSP that renders it suitable for use with all Lectrosonics Digital Hybrid receivers, though it is also backwards compatible for use with 100 and 200 series transmitters, IFB receivers, and various analog receivers from third-party manufactures. The unit is powered with two AA batteries, making use of switching power supplies to offer consistent voltages to its internal circuitry throughout its battery life.

Expanding the SMDWB’s functionality is its built-in recording capabilities, for use when transmission is simply not possible due to the conditions of the environment. The recorder operates at 24-bit/44.1 kHz, recording WAV files to microSDHC cards. As a transmitter, the SMDWB supplies an audio frequency range of 35 Hz to 20 kHz, though during recording, that lower value extends down to 20 Hz. You cannot use the transmitter and the recorder simultaneously, but it’s nice to have the option to select between the two. The transmitter includes a flexible steel-cable antenna.

Note:
Please note: 608.000 to 614.000 MHz are excluded

Key Features at a Glance

  • Selectable output power to maximize battery life or operating range
  • 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 three standard frequency blocks
  • Update firmware in the field via microSD card reader
  • Can also be used as a recorder on internal microSDHC memory card

Lectrosonics SMDWB Specs

Transmitter
Operating FrequenciesB1: 537.600 to 614.375
Channel SpacingSelectable between 25 or 100 kHz
RF Power OutputSwitchable among 25, 50 and 100 mW
Compatibility ModesDigital Hybrid Wireless (NU Hbr), 200 Series, 100 Series, Mode 3, Mode 6, IFB
Pilot Tone25 to 32 kHz; 5 kHz deviation (digital hybrid mode)
Frequency Stability± 0.002%
Deviation± 75 kHz maximum (digital hybrid mode)
Spurious RadiationCompliant with ETSI EN 300 422-1
Equivalent Input Noise-125 dBV, A-weighted
Input LevelIf set for dynamic mic: 0.5 to 50 mV before limiting, greater than 1 V with limiting
If set for a lavalier mic: 1.7 to 170 uA before limiting; greater than 5000 uA (5 mA) with limiting
If set for line-level input: 17 mV to 1.7 V before limiting; greater than 50 V with limiting
Input ImpedanceDynamic mic: 300 Ohms
Lavalier: Input is virtual ground with servo adjusted constant current bias
Line level: 2.7 kOhms
Input LevelSoft limiter, 30 dB range
Bias VoltageFixed 5 V at up to 5 mA; selectable servo bias for any electret lavalier (2 or 4 V)
Gain Control Range44 dB; panel mounted membrane switches
Modulation IndicatorsDual bicolor LEDs indicate modulation; -20, -10, 0, +10 dB referenced to full modulation
ControlsControl panel with LCD and 4 membrane switches
Low Frequency Roll-OffAdjustable from 35 to 150 Hz
Audio Frequency Response35 Hz to 20 kHz, ± 1 dB
Signal to Noise RatioOff: 103.5 dB (no limiting); 108.0 dB (with limiting)
Normal: 107.0 dB (no limiting); 111.5 dB (with limiting)
Full: 108.5 dB (no limiting); 113.0 dB (with limiting)
THD0.2% typical (400 Series mode)
Audio Input JackSwitchcraft 5-pin locking (TA5F)
Recorder
Storage MediamicroSDHC memory card
File FormatWAV files (BWF)
A/D Converter24-bit
Sampling Rate44.1 kHz
Recording ModesHD mono mode
24-bit: 144 kbps
32-bit: 192 kbps

Split gain mode
24-bit: 288 kbps
32-bit: 384 kbps
InputAnalog mic/line level compatible; servo bias preamp for lavalier microphones (2 and 4 V)
Input LevelDynamic mic: 0.5 to 50 mV
Electret mic: Nominal, 2 to 300 mV
Line level: 17 mV to 1.7 V
Input ConnectorTA5M 5-pin male
Audio PerformanceFrequency response: 20 Hz to 20 kHz; +0.5/-1.5 dB
Dynamic range: 110 dB (A-weighted), before limiting
Distortion: < 0.035%
Operating Temperature Range-5 to 122°F / -20 to 50°C
General
AntennaFlexible, unbreakable steel cable
BatteryAA lithium, disposable
Battery Life (approx.)50 mW (2 x AA): 14.5 hours
100 mW (2 x AA): 14 hours
Dimensions2.3 x 2.4 x 0.6" / 58 x 60 x 16 mm (without microphone)
Weight3.7 oz / 105 g (with batteries)
Packaging Info
Package Weight1.095 lb
Box Dimensions (LxWxH)9.9 x 7.85 x 2.95"
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