User manual
Lectrosonics L Series LR Receiver LMb

User Manual for Lectrosonics L Series LR Receiver LMb Beltpack Transmitter and Mic with Accessory Kit

• Product category: Wireless Systems Lectrosonics
• Brand: Lectrosonics
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Lectrosonics Wireless Systems

Product description

• L Series LR Mini Hybrid Portable Wireless Receiver (A1: 470.100 to 537.575 MHz)
  • Hands On Review : Lectrosonics L-Series Wireless System
  The LR Wireless Receiver from Lectrosonics is a digital hybrid ultra-compact portable wireless bodypack receiver with 75 MHz tuning bandwidth and with tracking front-end filters. When paired with a transmitter and microphone it can be used to capture audio in environments for applications such as broadcast TV, video production, ENG field work, and more. The LR has several other features to help provide good clear audio, such as compatibility modes to allow the receiver to operate with older analog receivers. Dual antenna diversity helps to improve range and resistance to dropouts. There is also a built-in RF spectrum analyzer and SmartTune scan, which make finding a clean frequency on-site quick and easy. In addition, the LR receiver is enclosed in machined-aluminum housing and built with detachable antennas that allow for remote antenna mounting. LCD and membrane switch interfaces provide clear information for setup and status monitoring. This transmitter operates in the A1 frequency band between 470.100 to 537.575 MHz.
• LMb Digital Hybrid Wireless Beltpack Transmitter (A1: 470.100 to 537.575 MHz) The LMb from Lectrosonics is a digital hybrid wireless beltpack transmitter with 75 MHz tuning bandwidth and 50 mW RF power. When paired with a mic and receiver, it can be used to capture audio for applications such as broadcast TV, theater, houses of worship, live stage, and more. The LMb has several other features to help you obtain good clear audio, such as 25 or 100 kHz tuning steps, a compatibility mode to ensure analog receivers will work well with the transmitter, a microphone input allowing you to use mic or line level inputs. When combined with the optional MI39-type instrument interface cable (sold separately), the LMb transmitter can be used as a musical instrument transmitter for guitar, bass or portable keyboard. In addition, the durable LMb transmitter is enclosed in machined-aluminum housing and is built with a fixed antenna. A multi-function toggle switch allows audio muting, power on/off, or talkback (when used with the SRb or Venue receivers). A LCD and membrane switch interface make the LMb transmitter easy to setup and simple to use. This transmitter operates on the A1 channel between 470.100 to 537.575 MHz.
• LRSHOE Receiver Mount Kit for LR Receiver The LRSHOE Receiver Mount Kit from Lectrosonics is an accessory shoe for the LR Digital Hybrid wireless receiver. It can be used to mount the receiver to a DSLR type camera or accessory bracket. This LRSHOE kit is supplied with all the parts needed to mount the receiver securely.
• MCLRTRS Audio Patch Cord for LR Receiver with 1/8" TRS Camera Input (20") The MCLRTRS from Lectrosonics is an 20" audio patch cord with a TA3F (mini XLR) on one end and a standard 1/8" (3.5mm) TRS (stereo) mini plug on the other end. It is designed for use with LR series receivers, and also works with SR series receivers with the SREXT adapter installed. It can be used for audio applications such as DSLR cameras, recorders, and more. Pin 2 of the TA3 connector feeds the tip and ring connections on the mini plug so both channels of a stereo recorder receive audio.
• MCSRXLR TA3 to XLR Cable for SR Receiver (12") The Lectrosonics MCSRXLR TA3 to XLR Cable measures 12" (30.48cm) and is intended for use with the SR receiver, when used with the External Mounting Kit SREXT. The XLR connector adapts to the balanced inputs on professional cameras.
• M152/5P - Omnidirectional Lavalier Microphone The Lectrosonics M152/5P Omnidirectional Lavalier Microphone is highly sensitive, and features a wide frequency response that accentuates the presence and character of the human voice. The M150's frequency response is measured at 20Hz to 20kHz with a slight rise around 10kHz, resulting in a brighter, more "airy" response. A low frequency dip around 50Hz reduces noise caused by proximity effect and ambience. The omni-directional polar pattern provides a generous response at the direct and off-axis sections of the microphone capsule. The M152/5P is compatible with any Lectrosonics beltpack with a TA5 connector.
  Omnidirectional Polar Pattern
  • The omnidirectional polar pattern provides a generous pickup at the direct and indirect sections of the capsule. The omnidirectional pattern is less susceptible to handling and clothing noise.
  Wide Frequency Response
  • The wide 20Hz to 20kHz frequency response features a slight rise around 10kHz. The high frequency rise enhances high frequencies of vocals, creating an "airy" response.
  Compatibility with Lectrosonics Transmitters
  • The mic is compatible with any other Lectrosonics beltpacks with TA5 connectord
• CCMINI Zippered Carrying Case The Lectrosonics CCMINI Zippered Carrying Case is a vinyl case made to carry compact wireless microphone systems.
  • Vinyl zippered carrying case
  • 2 Interior compartments
  Compatible with;
  • • Compact wireless microphone systems

• Limited 1-Year Warranty

• Limited 1-Year Warranty

• LRSHOE-MO

• Cold Foot Mount

• Thumb Nut

• Washer

• Jam Nut

• Limited 1-Year Warranty

• Limited 1-Year Warranty

• 90-Day Warranty

• 1-year Warranty

• One Year Warranty

Also Includes

• Limited 1-Year Warranty

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Technical parameters

• L Series LR Mini Hybrid Portable Wireless Receiver (A1: 470.100 to 537.575 MHz)

  Channel	A1
  Operating Frequencies	470.100 to 537.575 MHz
  Frequency Selection Steps	Selectable 25 or 100 kHz
  Receiver Type	Dual conversion, superheterodyne
  IF Frequency	243.950 MHz and 250.000 kHz
  Frequency Stability	± 0.001%
  Front End Bandwidth	20 MHz @ -3 dB
  Sensitivity	20 dB SINAD: 1.0 uV (-107 dBm), A weighted 60 dB Quieting: 2.2 uV (-100 dBm), A weighted
  Squelch Quieting	> 100 dB typical
  Modulation Acceptance	+/-100 kHz max. varies with selected compatibility mode
  Image and Spurious Rejection	85 dB
  Third Order Intercept	0 dBm
  Diversity Method	SmartDiversity phased antenna combining
  FM Detector	Digital pulse counting detector
  RF Spectrum Analyzer	Single and multiple block scanning modes with coarse and fine views of results
  Antenna Inputs	2x 50 ohms SMA female connectors
  Audio Output	1x TA3 male (mini XLR) balanced output
  Audio Output Level	Adjustable -50 to +5 dBu in 1 dB steps, unbalanced output level is 6 dB lower
  Front Panel Controls	Sealed panel with membrane switches LCD for setup menus and monitoring
  Audio Test Tone	1 kHz, -50 dBu to +5 dBu output (balanced), 1% THD
  Transmitter Battery Type Selection	AA alkaline or lithium Timer available for use with alkaline, lithium and HiMH
  Audio Polarity Selection	Normal or inverted
  Compatibility Modes	Digital Hybrid (North American and European) Lectrosonics 100, 200 and 300 series Lectrosonics IFB Non-Lectrosonics modes 3, 6 an 7 (contact the factory for details)
  SmartNR (Noise Reduction)	Off, Normal, Full modes (available in Digital Hybrid mode only)

  Frequency Response	32 Hz to 20 kHz (+/- 1 dB) receiver only (see transmitter documentation for overall system response)
  Total Harmonic Distortion (THD)	<0.4 (0.2% typical in Digital Hybrid mode)
  Top Panel Features	1 x TA3M audio output jack 2 x SMA antenna jacks 1 x IR (infrared) port
  Battery / Runtime	4 hours, AA alkaline
  Operating Temperature	-4 to 32 °F (-20 to +50°C)
  Dimensions (L x W x H)	3.21 x 2.45 x 0.84" (82 x 62 x 21 mm)
  Weight	6.54 oz (185.4 g) with two AA lithium batteries

  Box Dimensions (LxWxH)	9.7 x 8.1 x 2.9"

• LMb Digital Hybrid Wireless Beltpack Transmitter (A1: 470.100 to 537.575 MHz)

  Channel	A1
  Frequency Range	470.100 to 537.575 MHz
  Frequency Selection	Steps: Selectable 25 or 100 kHz
  RF Power Output	50 mW
  Pilot Tone	25 to 32 kHz, 5 kHz deviation (Digital Hybrid mode)
  Frequency Stability	± 0.002%
  Deviation	± 75 kHz max. (Digital Hybrid mode)
  Spurious Radiation	60 dB below carrier
  Equivalent Input Noise	-120 dBV (A-weighted)
  Input Level	Nominal 2 mV to 300 mV, before limiting Greater than 1 V maximum, with limiting
  Input Impedance	2 kOhms
  Input Limiter	DSP controlled, dual envelope "soft" limiter with greater than 30 dB range
  Gain Control Range	44 dB, digital control
  Modulation Indicators	Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation LCD bar graph

  Frequency Response	90 Hz to 20 kHz (+/-1 dB)
  Low Frequency Roll-Off	-12 dB/octave, 70 Hz
  THD	0.2% (typical)
  SNR at Receiver Output	SmartNR: Off 103.5 (no limiting) 108.0 (with limiting) Normal: 107.0 (no limiting) 111.5 (with limiting) Full: 108.5 (no limiting) 113.0 (with limiting) Note: The dual envelope "soft" limiter provides good handling of transients using variable attack and release time constants. Once activated, the limiter compresses 30+ dB of transmitter input range into 4.5 dB of receiver output range, thus reducing the measured figure for SNR without limiting by 4.5 dB
  Switch Controls	Top panel slide switch; programmable as power, mute, talkback or no (off) function Side panel membrane switches with LCD interface for power on/off and all setup and configuration controls
  Audio Input Jack	1x Switchcraft 5-pin locking (TA5F)
  Antenna	Galvanized steel, flexible wire
  Battery	2x AA alkaline, lithium, NiMh rechargeable
  Battery Life	Alkaline: 4.5 hours Duracell Quantum: 7 hours Eneloop 2400 mAH NiMH: 8 hours
  Dimensions (L x W x H)	3.2 x 2.4 x .8" (81 x 61 x 20 mm)
  Weight	5 oz (141 g), including lithium AA batteries and wire belt clip

  Box Dimensions (LxWxH)	13.3 x 5.5 x 3.4"

• LRSHOE Receiver Mount Kit for LR Receiver

  Dimensions	Not listed by manufacturer
  Weight	Not listed by manufacturer

  Box Dimensions (LxWxH)	6.4 x 3.95 x 0.65"

• MCLRTRS Audio Patch Cord for LR Receiver with 1/8" TRS Camera Input (20")

  Connector 1	1/8" (3.5 mm) TRS
  Connector 2	TA3F
  Length	20" (51 cm)
  Weight	Not listed by manufacturer

  Box Dimensions (LxWxH)	5.3 x 1.8 x 0.55"

• MCSRXLR TA3 to XLR Cable for SR Receiver (12")

  Box Dimensions (LxWxH)	3.0 x 2.6 x 0.6"

• M152/5P - Omnidirectional Lavalier Microphone

  Transducer	Electret Condenser
  Polar Pattern	Omnidirectional
  Frequency Response	20Hz - 20kHz
  Dynamic Range (Typical)	Not Specified by Manufacturer
  Signal-to-Noise Ratio	More than 38dB
  Maximum Input Sound Level	138dB, (@ 1kHz, 0.5% THD)
  Power Requirements	Max Operating Voltage: 10V supplied by transmitter
  Output Impedance	3k (2-6k)
  Output Connectors	TA5-female for UM Series Transmitters
  Pad	No
  Low Frequency Roll-Off	No
  Dimensions	Not Specified by Manufacturer
  Weight	Not Specified by Manufacturer

  Box Dimensions (LxWxH)	3.9 x 2.5 x 1.2"

• CCMINI Zippered Carrying Case

  Material	Vinyl
  Type of Closure	Zipper
  Interior Dimensions	10 x 7.0 x 2.0" (25.4 x 17.8 x 5.1cm) (LxWxH)
  Carrying/Transport Options	Carrying handle
  Weight	Not Specified by Manufacturer

  Box Dimensions (LxWxH)	10.0 x 9.9 x 1.0"

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