Lectrosonics SMDWB Miniature Wideband Transmitter, EO7-941

The Lectrosonics SMDWB Miniature Wideband Transmitter is a state-of-the-art audio device designed for professional wireless applications. This compact transmitter operates within a wide frequency range, providing exceptional audio clarity and reliability for live events, film productions, and broadcasting. With its ultra-lightweight, corrosion-resistant housing and water-resistant seals, the SMDWB is engineered to withstand damp environments, making it an ideal choice for professionals who need durable and reliable equipment.

Featuring an ultra-compact design, the SMDWB transmitter is engineered for ease of use and versatility. It boasts a simple interface, complete with an LCD screen and a lockout option to prevent accidental adjustments. The programmable compatibility modes allow for seamless integration with a wide variety of receivers, enhancing its adaptability in dynamic environments. The infrared (IR) port enables fast setup, ensuring that professionals can quickly get up and running.

Powered by a robust battery system that ensures long operational hours, the SMDWB transmitter can be configured for selectable RF output power of 25, 50, and 100 mW. This feature allows users to optimize the operating range or secure a reliable link in high RF noise environments. The transmitter also offers hands-free setup and adjustment using audible tones, and it can be put to sleep to conserve battery power during setup, only to be awakened for normal operation when the production begins.

Key Features

• Wideband frequency range for versatile applications
• Ultra-compact design for easy portability
• Durable, corrosion-resistant housing with water-resistant seals
• LCD interface with lockout option for ease of use
• Programmable compatibility modes for use with various receivers
• Infrared (IR) port for fast setup
• Selectable RF output power for optimal range and link security
• Long battery life for extended operation
• Exceptional audio fidelity with low distortion

Technical Specifications

Frequency Range
470 - 608 MHz, 941.525 - 951.975 MHz, 953.025 - 956.225 MHz, 956.475 - 959.825 MHz
Input Connector
TA4M
Battery Type
AA (alkaline or lithium)
Battery Life
Up to 10 hours (alkaline); up to 15 hours (lithium)

Channel Spacing
Selectable; 25 or 100 kHz
RF Power Output
SMWB/SMDWB, /X: Switchable; 25, 50 or 100 mW
/E01: Switchable; 10, 25 or 50 mW
/E06: Switchable; 25, 50 or 100 mW EIRP

Compatibility Modes
SMWB/SMDWB: Nu Hybrid, Mode 3, IFB
/E01: Digital Hybrid Wireless® (EU Hybr), Mode 3, IFB
/E06: /X: Digital Hybrid Wireless® (NA Hybr), IFB
/X: Digital Hybrid Wireless® (NA Hbr), 200 Series, 100 Series, Mode 3, Mode 6, IFB

Pilot Tone
25 to 32 kHz
Frequency Stability
± 0.002%
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 µA to 170 µA before limiting; Greater than 5000 µA (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 with 3 dB down points at 35, 50, 70, 100, 120, or 150 Hz
Audio Frequency Response
35 Hz to 20 kHz, +/-1 dB

Signal to Noise Ratio (dB)
(overall system, 400 Series mode): SmartNR No Limiting w/Limiting OFF 103.5 108.0 NORMAL 107.0 111.5 FULL 108.5 113.0
Total Harmonic Distortion
0.2% typical (400 Series mode)

Audio Input Jack
Switchcraft 5-pin locking (TA5F)
Antenna
Flexible, unbreakable steel cable.
Battery
AA, disposable, Lithium recommended +1.5VDC

Battery Life w/ AA
SMWB (1 AA): 4.4 hrs; SMDWB (2 AA): 11.2 hrs
Weight w/ Battery(s)
SMWB: 3.2 oz. (90.719 grams); SMDWB: 4.8 oz. (136.078 grams)

Overall Dimensions
SMWB: 2.366" x 1.954" x 0.642" (without microphone); 60.096 mm x 49.632 mm x 16.307 mm
SMDWB: 2.366" x 2.475" x 0.642"; 60.096 mm x 62.865 mm x 16.307 mm

Emission Designator
SMWB/SMDWB/E01, E06 and E07-941: 110KF3E; SMWB/SMDWB/X: 180KF3E

Storage Media
microSDHC memory card
File Format
.wav files (BWF)
A/D Converter
24-bit
Sampling Rate
44.1 kHz

Input Type
Analog mic/line level compatible; servo bias preamp for 2V and 4V lavaliere microphones
Input Level
Dynamic mic: 0.5 mV to 50 mV; Electret mic: Nominal 2 mV to 300 mV; Line level: 17 mV to 1.7 V

Input Connector
TA5M 5-pin male
Audio Performance
Frequency response: 20 Hz to 20 kHz; +0.5/-1.5 dB; Dynamic range: 110 dB (A), before limiting; Distortion: < 0.035%

Operating Temperature Range
Celsius: -20 to 40; Fahrenheit: -5 to 104

Available Recording Time
Using a microSDHC memory card, the approximate recording times are as follows: 8GB - 11 hrs. 12 min.; 16GB - 23 hrs.; 32GB - 46 hrs. 7 min.

What's Included

• 1 – AA battery
• 1 – AMM-19 antenna
• 1 – AMM-22 antenna
• 1 – SMDWBBCSL belt clip
• 1 – PSMWB pouch with swivel clip
• 1 – SMKITTA5 Connector kit with boot
• 1 – 55010 – 16 GB microSD card