The Lectrosonics SMWB 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: 537 to 607 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 2.7 oz, the transmitter boasts settings which make 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 SMWB utilizes DSP that renders it suitable for use with all Lectrosonics Digital Hybrid receivers, though it is also backward compatible for use with 100 and 200 series transmitters, IFB receivers, and various analog receivers from third-party manufactures. The unit is powered by one AA battery, making use of switching power supplies to offer consistent voltages to its internal circuitry throughout its battery life. One AA battery is included. 

Expanding the SMWB’s functionality is its built-in recording capability, 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 SMWB 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.

Professional Film & TV Applications    2 x M152/5P Omni Lavalier Mics    2 x SMWB Beltpack Transmitters    SRc Dual-Channel Slot-Mount Receiver    SREXT SR Receiver Adapter Kit    Compander-Free Digital Hybrid Audio    Ultra-Lightweight, Water Resistant    Transmitter with Built-In Recorder    Adjustable 25/50/100 mW RF Output Power    4.4-Hr AA Batteries

• 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. Smart phone spplications

A: The Lectrosonics LR Receiver can be connected to a smartphone using the included 1/8 output cable along with an optional adapter such as the Rode SC4.

Q: 2. What is Wireless range in and outdoors?

A: The Sennheiser XSW system will give you about 75 to 100 feet operational distance. Line of sight.

Q: 3. what wireless label microphones would work well with this receiver?

A: The Shure SM58 wireless microphones with H9: 512 - 542 MHZ work excellent with this receiver.

Q: 4. can i use this with my gopro9 media mod?

A: Yes, the Movo Photo WMX-1 Wireless Lavalier Microphone System can be connected to the 3.5mm mic input on a GoPro Media Mod.

Q: 5. Does this wireless kit have the ability to search automatically for available transmission frequencies, like the SONY UWP-D11? From what I understand the Sony kit will automatically select a clear signal, even if for example the transmitter is on the subject, away from the receiver.

A: Short answer: YES! It's called Smart Tune in the setup menu. The receiver does a scan of the entire tuning range and then suggests a choice which you can accept with a button push.

Q: 6. can I use the lavalier microphone and the handheld microphone at the same time?

A: Yes, you can use both transmitters at the same time with the Sennheiser EM-XSW 1 receiver. The receiver has two separate channels so it works with two wireless transmitters/microphones at the same time.

Q: 7. does it include two wireless lapel microphones?

A: No, this listing is for the dual-channel receiver only. If you are looking to purchase a complete dual lavalier wireless system, I would recommend the BLX188/CVL. a href= http://www.shure.com/americas/products/wireless-systems/blx-wireless-systems target= _blank http://www.shure.com/americas/products/wireless-systems/blx-wireless-systems/a

Q: 8. Which countryman mic works with the transmitter. LS or LT?

A: Any mic that termnates at a TA5 female connector with work.

Q: 9. Can this be used with a sound board if I use a 3/4 adaptor?

A: Yes, the Movo Photo WMX-1 Wireless Lavalier Microphone System can be connected with a mixer. You can use a cable like the Kopul Stereo Right-Angle 1/8" Male Mini-Jack to XLR Male Cable - 1.5' (B&H # KORSMXM015) to connect to an XLR mic input on the mixer, or you can use a 1/4" adapter like the Comprehensive Stereo 1/4" Male to Stereo 1/8" (3.5mm) Female Adapter (B&H # COSPPMJS) along with the TRS cable included with the wireless mic system to connect to a 1/4" mic input on the mixer.

Q: 10. I got the dual person. It came with two XS Wireless packs. They both had the same frequency. How to chance one to a different frequency?

A: Changing frequency on the Sennheiser XSW 1 DUAL 2-Person Wireless Omni Lavalier Microphone System Kit can be initiated on the EM-XSW 1 Dual-Channel Stationary Receiver. First, press the Up/Down button on the specific receiver module you would like to change and select "Scan". Press the "Set" button next to activate this function, where the receiver will select an open channel. Next, power on your correlating transmitter and press the "Sync" button until the receiver's display flashes "SYNC". Finally, press the "Sync" button on the receiver to transfer the selected frequency to the transmitter. This process is described in further detail on page 11 of the system manual linked here: https://bhpho.to/3qHYANh