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Lectrosonics 2-Person SRc Wireless Omni Lavalier Microphone System Kit for Standalone Use (A1: 470 to 537 MHz)

Lectrosonics 2-Person SRc Wireless Omni Lavalier Microphone System Kit for Standalone Use (A1: 470 to 537 MHz)
Key Features
  • Professional Film & TV Applications
  • 2 x M152/5P Omni Lavalier Mics
  • 2 x SMWB Beltpack Transmitters
  • SRc Dual-Channel Slot-Mount Receiver
The Lectrosonics 2-Person SRc Wireless Omni Lavalier Microphone System Kit for Standalone Use from B&H is designed to deliver pristine audio and reliable performance for professional filmmaking and TV applications, when used with an audio bag.
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Lectrosonics SRc Overview

  • 1Description
  • 2Lectrosonics SMWB Wideband Beltpack Transmitter/Recorder (A1: 470 to 537 MHz)
  • 3Lectrosonics M152/5P Omnidirectional Lavalier Microphone with TA5F Connector (Black)
  • 4Lectrosonics SRc Dual-Channel Slot-Mount ENG Receiver (A1: 470.100 to 537.575 MHz)
  • 5Lectrosonics SREXT SR Receiver Mounting Kit for Stand Alone Operation

The Lectrosonics 2-Person SRc Wireless Omni Lavalier Microphone System Kit for Standalone Use from B&H is designed to deliver pristine audio and reliable performance for professional filmmaking and TV applications, when used with an audio bag.

The kit includes an SRc dual-channel slot-mount receiver and two SMWB beltpack transmitters, each with an M152/5P omnidirectional lavalier microphone. The bodypacks also function as portable recorders, great in situations when wireless reception is compromised. Also included is the SREXT adapter kit with two locking TA3-M balanced output connectors and a locking power jack connector.

Lectrosonics SMWB Wideband Beltpack Transmitter/Recorder (A1: 470 to 537 MHz)

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 A1: 470 to 537 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.

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 M152/5P Omnidirectional Lavalier Microphone with TA5F Connector (Black)

The black Lectrosonics M152/5P is an omnidirectional lavalier microphone, featuring a wide frequency response that accentuates the presence and character of the human voice. The mic offers a 3.3' cable, terminating in a TA5F connector designed to work with any Lectrosonics transmitter or recorder with a TA5M input.

The M152's frequency response is measured at 20 Hz to 20 kHz with a slight rise around 10 kHz, resulting in a brighter, more "airy" response. A low-frequency roll-off around 50 Hz reduces noise caused by proximity effect and ambience. The omnidirectional polar pattern provides a generous response at both the direct and off-axis sections of the microphone capsule, helping to ensure consistent levels.

Locking TA5F Connector
Compatible Wireless Transmitters and Recorders
  • Lectrosonics: Works with current and legacy Lectrosonics transmitter and recorder models equipped with a TA5M connector, including the following: SMWB, SMDWB, LMb, LT, MTCR, SPDR, SMV, SMQV, and DBu (TA5M version).
  • The M152/5P can also be used with third-party transmitters that are equipped to supply 1.3 to 10 VDC through a TA5M connector with a Lectrosonics servo-bias wiring configuration.
A Clear and Reliable Omnidirectional Lav Mic
Wide Frequency Response with Presence Boost
A wide 20 Hz to 20 kHz frequency range with a light low-end roll-off filter below 50 Hz along with a 2 to 3 dB presence boost in the 10 to 12 kHz range allows the M152 to provide crisp and accurate reproduction of speech and vocals.
Omnidirectional Polar Pattern
The forgiving omnidirectional polar pattern picks up sound from all around the mic and provides a consistent frequency response, even for off-axis sound. This helps to supply clear, intelligible speech, even when the talent isn't speaking directly toward the microphone.
Headroom for Standard Speech Applications
The mic is designed to handle speech at levels up to 114 dB without distortion, enough headroom for most broadcast and presentation applications.
Tough-Build Quality
The M152 has been designed to minimize mechanical noise and survive the rigors of on-set wear and tear to deliver clear, dependable audio.
Lectrosonics SRc Dual-Channel Slot-Mount ENG Receiver (A1: 470.100 to 537.575 MHz)

The SRc Dual-Channel Slot-Mount ENG Receiver from Lectrosonics consist of two separate receivers built into a single, ultra-compact housing with adapters for video-camera-receiver slots and for stand-alone use. They can be used when paired with a transmitter & microphone (sold separately) in various environments for ENG (Electronic News Gathering), EFP (Electronic Field Productions) and other audio applications.

Each receiver features Digital Hybrid Wireless technology that provides compandor-free audio quality and compatibility with other wireless systems. The RF performance is stable over a wide temperature range, making the receiver perfectly suited in rough environmental conditions.

The front panel has a menu-driven LCD interface and four membrane switches which are used to view and alter settings. In addition, the LCD window displays the pilot-tone indicator, diversity activity, RF level, audio level, and transmitter battery status for both receivers.

Furthermore, a built-in spectrum analyzer scans across the tuning range of the receiver and displays a histogram of RF activity across the band. Areas of RF activity are easily recognizable. The two internal receivers can be operated separately and both have switching, antenna-combining diversity, or in tandem with ratio-diversity reception.

Finally, a variety of output adapters and mounting options are available for camera-slot operation. The receivers are powered from an external 7 to 18 VDC source.

Fits camera "slots," Lectrosonics Duopack adapter and Octopack multicoupler, and operates stand-alone with various adapters
Dual-receiver design for two channels with phase switched diversity or single channel with ratio diversity operation
Digital Hybrid Wireless with compatibility modes for use with other transmitters
Tracking front-end filters for high performance in tough RF environments
LCD with RF spectrum scanning
SmartSquelch DSP-controlled, noise-based filtering and squelch
DSP-based pilot tone for squelch control
IR sync port for quick transmitter setup (LMb, LT, HHa, HMa, & SSM)
SmartTune operation for quick and confident frequency selection
Lectrosonics SREXT SR Receiver Mounting Kit for Stand Alone Operation

The Lectrosonics SREXT is a connector panel adapter kit for the Lectrosonics SR Dual Slot-In Receiver. The kit is intended to provide the freedom of using the SR Receiver on standard, non slot-in mount scenarios. On the included connector panel are two TA3-male jacks for balanced output and a power jack with a locking connector. An unterminated power cable may trimmed to a desired length.

Lectrosonics SMWB Wideband Beltpack Transmitter/Recorder (A1: 470 to 537 MHz) Specs

Transmitter TypeBodypack
RF Output Power25 / 50 / 100 mW
Audio I/O1 x TA5/Mini XLR 5-Pin Male Input (Lockable)
Included Cable ConnectorNone
Plug-In Power5 V
Audio Input Level0.5 to 50 mV (Mic Level)
17 to 1.7 mV (Line Level)
Auto-Level ControlNo
Recorder Sample RatesWAV:
44.1 kHz (Record)
Recorder Bit Depths24-Bit
Memory Card SupportmicroSDHC
Audio File FormatsRecording:
Bit Rates144 to 192 kb/s (HD Mono Mode)
288 to 384 kb/s (Split Gain Mode)
Gain Range 44 dB
Signal ProcessingHigh-Pass Filter:
35 Hz
High-Pass Filter:
50 Hz
High-Pass Filter:
70 Hz
High-Pass Filter:
100 Hz
High-Pass Filter:
120 Hz
High-Pass Filter:
150 Hz
Frequency Response35 Hz to 20 kHz
Sync MethodIR
Antenna1 x Flexible Whip, Detachable
Power RequirementsBattery
Battery Type1 x AA (Included)
Approx. Battery Life4.4 Hours (Alkaline)
Display & Indicators1 x Backlit LCD (Audio Level, Battery Status, Channel, High-Pass Filter, RF Output Power)
1 x LED (Audio Level, Peak)
Operating Temperature-4 to 122°F / -20 to 50°C
Dimensions2.4 x 2 x 0.6" / 60 x 49.6 x 16.3 mm
Weight3.2 oz / 91 g
Wireless TechnologyAnalog/Digital Hybrid UHF (900 MHz)
RF Frequency BandA1:
470.1 to 537.575 MHz
Frequency Step Size25 kHz
100 kHz
RF Channel ScanningAuto-Scan
Packaging Info
Package Weight0.96 lb
Box Dimensions (LxWxH)9.9 x 7.9 x 2.9"

Lectrosonics M152/5P Omnidirectional Lavalier Microphone with TA5F Connector (Black) Specs

Form FactorLavalier
Capsule1 x Electret Condenser
Polar PatternOmnidirectional
WindscreenFoam (Included)
Frequency Range20 Hz to 20 kHz
Maximum SPL114 dB SPL
Impedance3 Kilohms
Sensitivity10 mV/Pa
Signal-to-Noise Ratio38 dB
Output Connectors1 x TA5/Mini XLR 5-Pin Female (Lockable)
Headphone ConnectorNone
Cable Length3.3' / 1 m
Operating Voltage1.3 to 10 V
Operating Current Consumption30 µA
MountingAlligator Clip (with Included Hardware)
Packaging Info
Package Weight0.13 lb
Box Dimensions (LxWxH)3.9 x 2.5 x 1.2"

Lectrosonics SRc Dual-Channel Slot-Mount ENG Receiver (A1: 470.100 to 537.575 MHz) Specs

Wireless TechnologyAnalog/Digital Hybrid UHF
Number of RF Channel Frequencies3072
DiversityRatio Diversity, Smart Diversity
RF Frequency BandA1:
470.1 to 537.575 MHz
RF Bandwidth76 MHz
Frequency Step Size25 kHz
100 kHz
RF Channel ScanningAuto-Scan
Control App SupportNo
Receiver TypeSlot-Mount
Mounting OptionsShoe-Mount, Slot-Mount, 1/4"-20 Female (with Optional Hardware)
Antenna2 x Flexible Whip, SMA (Top-Mount)
Number of Audio Channels2
Audio I/ONone
Slot-Mount I/O AdaptersAvailable Separately:
DB-25 (Uni/SuperSlot), DE-15/DB-15 (Sony Type), TA3/Mini XLR, TA5/Mini XLR
Gain Range20 to 60 dB
Audio Output Level-50 to +5 dB (Balanced)
Frequency Response32 Hz to 20 kHz ±1 dB
Network I/ONone
Network ProtocolsNone
USB/Lightning ConnectivityNone
Standalone Audio Interface CapableNo
50 Ohms
RF PrincipleDouble Superheterodyne
Approximate RF Sensitivity-107 dB / 1 µV
Squelch100 dBm
SpuriousRejection: 85 dB
Power RequirementsAC/DC Power Adapter, Battery, DC Input
Battery Type2 x 9V (with Optional Equipment)
AC/DC Power Adapter12 VDC at 3 A (Not Included)
DC Input Power7 to 18 VDC
18 VDC at 145mA
7 VDC at 290mA
AC Input Power100 to 240 VAC, 50 / 60 Hz
Display & Indicators1 x LCD (Battery Status, Level, Power, RF Level, Sync, Transmitter Battery Status)
Operating Temperature-4 to 122°F / -20 to 50°C
Dimensions2.9 x 1.2 x 4.9" / 73.7 x 30.5 x 124.5 mm
Weight7 oz / 198 g
Packaging Info
Package Weight0.95 lb
Box Dimensions (LxWxH)13.25 x 5.375 x 3.5"

Lectrosonics SREXT SR Receiver Mounting Kit for Stand Alone Operation Specs

Packaging Info
Package Weight0.25 lb
Box Dimensions (LxWxH)2.6 x 1 x 0.65"

Lectrosonics SRc Reviews

Well worth the price

By Carlos
Rated 5 out of 5
Date: 2022-01-25

I was using a G4 and needed some more mics. There are a lot of options out there but these just work. I wanted something with good range and no dropout issues. I got these for one thing and now I use them for everything. They are crystal clear. I started using them at church also and there is no issue even with everyone on wireless devices. It is my first Lectrosonics system but definitely not my last.

Great machine

By Alvin
Rated 5 out of 5
Date: 2018-11-23

I bought the SRC as my first dual receiver having used the SRB a few times beforehand. The long and short of this thing is that it’s a workhorse that is accurate in its scanning and compatibility with devices is fantastic. The one downside to this thing is that it still has the trouble with Walkie-talkies if they are used too close to it. So be aware of your proximity to two-way radios. I can’t recommend this product enough. Truly the best tech Lectrosonics has to offer. I use this in an ENG bag for reality tv and it helps with cutting the weight down from the old 411a receivers. Also the versatility of the bottom plate adapters lets you use it in a camera slot, a rack mount, or for firmware updates. A must buy.

A solid investment for ENG/EFP sound

By Alex
Rated 5 out of 5
Date: 2021-11-16

This is not my first SRc. It's my 7th (4 in one bag, 3 in the other), as I keep adding channels to my inventory. With plenty of transmitters on hand, I needed to add two extra receiver channels to my secondary sound package. I'm all-in on Lectrosonics and the A1 block for talent wireless. I use the SRc with SMDWB and SMWB transmitters. Menu navigation is intuitive. Build quality is top-notch. The SREXT back plate is easy to install for immediate integration into a bagged sound package. There's been plenty of chatter about signal range with the SRc not quite being up to snuff as compared to the lauded 411a, but both my sound packages have antenna distribution with PSC RF Multi and Betso Bowties, and I have no issues with signal range. Even with the newer all-digital systems hitting the market (822, DSQD), there's still plenty of life in digital hybrid.

Love it!

By Carlos
Rated 5 out of 5
Date: 2021-11-08

This is my first Lectrosonics purchase after doing some extensive research on upgrading my previous setup. This has exceeded my expectations in every way. Not only do I use it for filming but I also use it at our church at it works flawlessly! The sound difference is beyond just noticeable. For the first time in 19 years we have no dropouts with a lapel mic.

See any errors on this page? Let us know


Does this run off of 9V battery power?

Does this run off of 9V battery power?
Asked by: Dave
You would need SR9VBP to be able to run this on a 9V battery.
Answered by: David
Date published: 2021-07-29

What type of batteries does the receiver and ...

What type of batteries does the receiver and transmitter use?
Asked by: Alan
This is a slot in receiver which means it will not connect to a battery directly. Instead it will feed off the camera power/battery or through other slot systems. If you don't already have a slot-in system, this is most likely not the right system to suit your needs.
Answered by: Marty
Date published: 2019-02-27


Whats included in the box?
Asked by: Paul
In the box is the receiver, a wall mounted power supply, and 2 antennas. The bottom plate, which is selected according to the way it will be used, must be ordered separately. For example, for a Panasonic camera you need to order an SRSUPER plate. Please see the Lectrosonics website for a list of available bottom plates.
Answered by: Howard K. Lectrosonics Expert
Date published: 2018-08-27


What is the power input? What kind of cable could I use to go from an NP-1 or BDS into the SRc?
Asked by: Harper
The receiver accepts from 6-18V d.c. @1.4W, so it is compatible with most any battery or DC supply system. The connector is an LZR threaded locking plug. Our PS200 cable goes from a Hirose to LZR so that might help. (You didn't state what type of connector is at the supply side). Also - and very important: you must order with the receiver a bottom plate that is suitable to your application. If the receiver is not being used in a camera the most commonly used plate is the SREXT. This gives you both audio channels out on TA3 connectors and the LZR power input port.
Answered by: Howard K. Lectrosonics Expert
Date published: 2018-08-27
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