The Lectrosonics SMDWB/E07-941 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 941 to 959 MHz band, 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/E07-941 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/E07-941’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/E07-941 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.

For Broadcast, EFP and ENG Applications    Beltpack Transmitter    Alternate Recording Function    35 Hz to 20 kHz Frequency Range    Runs on 2 x AA Batteries    44 dB of Gain Range    For Lavs & Dynamic Mics & Line Levels    Selectable High-Pass Filtering    Built-In Limiter with 30 dB of GR    Flexible Steel-Cable Antenna

• 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

Related Questions and Answers

Q: 1. Is there an adapter for lectrosonics compatible (TA5F) lavs, or would I need to get new lavs for this?

A: Although we have seen custom adapters to convert TA5F to 3-Pin Lemo, we recommend using lavaliers with dedicated wiring for the Lectrosonics SSM Digital Hybrid Wireless Miniature Transmitter. B&H does not offer adapters of this nature at this time.

Q: 2. Hi guys, I would like to know if these transmitters came with the Lectrosonics SMDWBBCSL Spring-Loaded Metal Belt Clip Kit (Antenna Up or Down) or I have to buy them separated. Thanks for the support

A: Please call customer service at 800-821-1121

Q: 3. What is the expected runtime for the SMDWB on Eneloop Pro 2450s and Energizer Lithium (the data sheet only shows Alkaline, which seems possibly incorrect)?

A: The battery run time for the Lectrosonics SMDWB with AA lithium, disposable batteries is. At 50 mW (2 x AA): 14.5 hours and at 100 mW (2 x AA): 14 hours.

Q: 4. What's the difference between this one and the more expensive one "DWR-S03D"? https://bhpho.to/2Hd9wvU

A: The DWR-S03D utilizes Sony's DWX digital technology and can mount into Sony digital slot-in compatible camcorders, UniSlot camcorders, and SuperSlot-enabled devices using either the DWA-SLAS1 or DWA-SLAU1 adapters. It can also be used in an audio bag with the DWA-F01D adapter. The URX-S03D is a slot-in receiver that provides a two-channel digital connection to XDCAM camcorders or a single-channel connection to HDCAM camcorders via a D-sub 15-pin interface. With HDCAM camcorders, two audio signals from two transmitters can be output in the single channel as a two-channel mixing function.

Q: 5. What adapter do I need to connect to a Zoom H4n?

A: Hi Gabriel,I think you need to be much more specific. So you want to connect something to an H4N - but what exactly do you want to connect to it?Howard

Q: 6. I have a lot of Sennheiser lavs with a 3.5mm connector. Is there an adapter that will connect my Sennheiser mics to the 3 pin lemo of this receiver?

A: Unfortunately there would be no adapters available to connect a lavalier wired with a Sennheiser mini jack to connect with a Lectrosonics transmitter.

Q: 7. I want to use a couple of Lectrosonics M-150 lavs as hard-wired backups to my normal gear. The stated compatible models are: Lectrosonics HM, UH400 and UH400a. M-150 uses a 5 pin female TA5 so will it also work with this adapter?

A: The MCA5X will work with all Lectrosonics mics wired with a 5 pin female (TA5) connector, however it is designed for use with their Plug On transmitters only. It will NOT work when connected to a microphone input on a mixer or a recorder.

Q: 8. Does this unit only provide limited frequency spectrum (15 Hz to 11.3 kHz)? I would like to use this as a compact IEM wireless solution but am concerned I wouldn't be able to hear my mix with fidelity after investing so much in this kit. I almost ordered this before catching the limited spec as there are no other body pack-sized (transmitter) solutions on the pro market for wireless IEM. Does anyone have any other recommendations?

A: The DCHT, like the M2T rack unit, provides 20 - 12 kHz audio frequency response with the M2R receiver. Although on paper that appears quite limited, the impression upon listening to it is that everything is there. By far most of the energy in a mix is between 50 Hz and 10 kHz, with harmonics extending above that. I would suggest giving it a listen and decide for yourself. If you have already used the M2T and M2R combination, then you are hearing the same thing you would hear with the DCHT and M2R.

Q: 9. Is this ok to use for bag work? Would the proximity of this transmitter interfere with the receivers, I'm also carrying in my audio bag? Would the LMa model be a better solution?

A: I don't think you have anything to worry about. The systems you are using are about as good as it gets. They are all frequency agile and the system overcomes channel noise by digital encoding and decoding audio in the transmitter and receiver. That being said no wireless can be 100% fool proof. But what you are using is about as close as it gets. Even in the worst case scenario if you had an issue. You can always take a receiver out of your bag and put it in your back pocket. I think you should be fine and the LMa is unnecessary.

Q: 10. How is this receiver different than the DCR822 other than the slot-in size capability?

A: The Lectrosonics DSR Two-Channel Digital Slot Receiver and the Lectrosonics DCR822 Compact Dual-Channel Digital Wireless Receiver are incredibly similar units, and both models are compatible with the same transmitters. The only differences are within secondary characteristics like the type of panel used for the screen (OLED for the DCR822 / IPS for the DSR). Additionally, the DCR822 has onboard recording capabilities via microSDHC and can be powered with AA batteries or DC power. The DSR uses DC power only.