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Lectrosonics Dual-Battery Digital Wireless Bodypack Audio Transmitter/Recorder

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  • For D Squared, DCR822, DCHR/DCHT & Duet
  • Transmits or Records at 24-Bit / 48 kHz
  • Use with Electret/Dynamic Lav or Line In
  • TA5M Input with Servo Bias Circuitry
  • Up to 44 dB Gain in 1 dB Steps
  • 10/25/50mW RF Output Power
  • 2mW High-Density Mode
  • Secure AES-256 Encryption
  • Built-In Limiter & Selectable HP Filter
  • Up to 18.3 Hours via Two AA Batteries

The Lectrosonics DBSMD Dual-Battery Digital Wireless Bodypack Transmitter/Recorder offers 100% digital architecture with secure AES-256 encryption, a wider frequency range, a high-density mode for incredibly tight channel spacing, extended battery life, and timecode jam sync support in the same ultracompact size and shape as its SMWBD predecessor, the Lectrosonics DBSMD dual-battery digital wireless bodypack transmitter/recorder delivers premium audio quality, dependability, and versatility for professional sound recordists working in demanding production environments such as TV, film, sports, and live sound.

From its rugged aluminum housing and non-corrosive finish to its water-resistant control panel and OLED display, the DBSMD is ready to take on the challenges of any shooting scenario. The servo bias input circuitry can accommodate an electret lavalier mic, a dynamic mic, or a line-level input, and the TA5M input jack is also able to accept a timecode feed. Whether used as a transmitter or a standalone recorder, the DBSMD delivers pristine 24-bit / 48 kHz audio. It is compatible with D Squared, DCR822, DCHR/DCHT, and Duet systems.

Built for Professionals

The DBSMD digital transcorder (transmitter/recorder) was developed specifically for the needs of the film industry and offers timecode jam sync capability. It provides hands-free setup and adjustment using audible tones and can be put to sleep to conserve battery power during setup while buried inside costuming, then awakened for normal operation when the production begins.

100% Digital Architecture with Encryption

The DBSMD is the latest in the long and hugely successful SM Series of miniature transmitters and is part of the Lectrosonics digital ecosystem including D Squared, DCR822, DCHR/DCHT, and Duet systems. The new model features a tuning range covering the A1 and B1 bands from 470.100 to 607.950 MHz. With 100% digital audio and transmission, the DBSMD has an extremely low audio noise floor plus AES-256 CTR mode encryption with four different key policies.

Digital transmitters offer new opportunities including encryption, flatter phase and amplitude response, quieter noise floor, and increased metadata during transmission. The latest design can also increase battery life, allow for extremely tight channel spacing, and increased range per average RF power.

Variable RF Power and Extended Battery Life

The DBSMD also offers selectable output power of 10, 25, and 50mW in D2 mode. A special high-density transmit mode (HDM) at 2mW allows for ultra-tight channel spacing of 200 kHz without concern for frequency coordination, giving you over 24 channels in just 6 MHz of bandwidth. Depending on the battery type and RF output power, the DBSMD can give you up to 18 hours of continuous use.

Versatile Input Section with Limiter

The input section features the unique Lectrosonics servo bias input circuitry with a standard TA5M type jack for use with electret lavalier 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.

Essential Features

  • Selectable output power to maximize operating range or battery life
  • Ultralightweight, corrosion-resistant housing
  • OLED interface with lockout option
  • Servo bias input circuitry
  • IR (infrared) port for fast setup
  • Alternate use as recorder on internal microSDHC memory card (16GB card included)
  • Timecode jam sync capability with TCXO for <1 ppm accuracy
  • High-density mode for ultratight channel spacing
  • Compatible with existing accessories from SMDWB including SMBATELIM, pouches, and clips
  • Wireless Designer can include HDM in coordinations (requires PC version 2.0.31 and Macversion 2.0.26 or higher)

Fine-Tuned Audio

Input gain can be adjusted in 1 dB increments over a 44 dB range. A low-frequency audio roll-off is available at 20, 35, 50, 70, 100, 120 or 150 Hz (at 3 dB down points) to control subsonic and very-low-frequency audio content. The DBSMD boasts a 20 Hz to 20 kHz frequency response in D2 mode, 112 dB dynamic range, and linear phase response.

Rugged and Ready for Challenging Conditions

The housing is machined from solid aluminum blocks to provide an extremely lightweight and rugged package. A special non-corrosive finish resists salt water exposure and perspiration in extreme environments. A water-resistant control panel with LCD, membrane switches, and multicolor LEDs make input gain adjustments, frequency, and compatibility mode selection quick and accurate. The battery compartment accepts two industry-accepted AA batteries (lithium recommended).

Alternate Recording Function

Instead of transmitting, the transmitters may also be used as a standalone recorder. The industry-standard .wav (BWF) file format is compatible with essentially any audio or video editing software. The DBSMD records at 24-bit / 48 kHz resolution to microSDHC cards (16GB card included).
Included Accessories
  • 2 x AA batteries
  • AMM-19 antenna
  • AMM-22 antenna
  • SMWBBCUPSL belt clip
  • PSMWB pouch with swivel clip
  • SMKITTA5 connector kit with boot
  • 16GB microSD card
In the Box
  • Lectrosonics DBSMD Dual-Battery Digital Wireless Bodypack Transmitter/Recorder (A1-B1: 470.100 to 607.950 MHz)
  • 2 x AA Battery
  • Lectrosonics AMM Whip Antenna for Wireless Transmitters/Receivers (Block 19: 486 to 511 MHz)
  • Lectrosonics AMM Whip Antenna for Wireless Transmitters/Receivers (Block 22: 563 to 588 MHz)
  • Lectrosonics SMWBBCUPSL Spring-Loaded Metal Belt Clip Kit (Antenna Up)
  • Lectrosonics PSMWB Leather Pouch with Belt Clip for SMWB Transmitter
  • Lectrosonics SMKITTA5 - TA5-Female Custom Connector Kit with 5-pin Plug and Sleeve
  • Lectrosonics 55010 16GB Elite microSDHC Memory Card with SD Adapter
  • Limited 1-Year Warranty
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More Information
Product ConditonNew


Wireless Technology Digital UHF
RF Frequency Band A1-B1:
470.1 to 607.95 MHz
Frequency Step Size 25 kHz
Built-In Recorder Yes
Timecode Support Yes
Sample Rate/Resolution 48 kHz / 24-Bit
Encryption AES 256
Modulation 8PSK


Transmitter Type Bodypack
RF Output Power 2 / 10 / 25 / 50 mW (Switchable)
Audio I/O 1 x TA5/Mini XLR 5-Pin Male Input (Lockable)
Included Cable Connector None
Plug-In Power 5 V
Pad None
Muting Off/On Switch
Audio Input Level 0.5 to 50 mV (Mic Level)
2 to 300 mV (Mic Level)
17 to 1700 mV (Line Level)
Auto-Level Control No
Recorder Sample Rates WAV:
48 kHz
Recorder Bit Depths 24-Bit
Memory Card Support microSDHC (4 to 32 GB)
Audio File Formats BWF
Gain Range -7 to +44 dB (1 dB Steps)
Signal Processing High-Pass Filter:
-3 dB at 20 Hz
High-Pass Filter:
-3 dB at 35 Hz
High-Pass Filter:
-3 dB at 50 Hz
High-Pass Filter:
-3 dB at 70 Hz
High-Pass Filter:
-3 dB at 100 Hz
High-Pass Filter:
-3 dB at 120 Hz
High-Pass Filter:
-3 dB at 150 Hz
Frequency Response 20 Hz to 20 kHz ±1 dB (Dependent on Mic)
Sync Method IR
Antenna 2 x 1/4 Wave External, Detachable
Power Requirements Battery
Battery Type 2 x AA (Included)
Approx. Battery Life High:
12.17 Hours (Lithium)
4.5 Hours (Alkaline)
7.42 Hours (NiMH)
18.33 Hours (Lithium)
7.75 Hours (Alkaline)
10.92 Hours (NiMH)
USB/Lightning Connectivity None
Display & Indicators 1 x LCD (Audio Level, Battery Status, Channel)
2 x LED (Audio Level)
1 x LED (Battery Status)
Housing Aluminum
Operating Temperature -5 to 122°F / -20 to 50°C
Dimensions 2.4 x 2.5 x 0.6" / 6.1 x 6.3 x 1.5 cm
Weight 4.8 oz / 136 g

Packaging Info

Package Weight 1.025 lb
Box Dimensions (LxWxH) 9.8 x 7.8 x 2.9"
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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