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Lectrosonics L Series LMb and LT Transmitters lectrosonics lectrosonics
Hands-On Review : Lectrosonics L-Series Wireless System
The LT from Lectrosonics is a digital hybrid wireless beltpack transmitter with 75 MHz tuning bandwidth, a multi-function toggle switch, and the ability to respond to remote commands from RM or smartphone apps. It can be used to capture audio in environments for applications such as broadcast TV, theater, houses of worship, live stage, and more.
The LT has several other features to help you obtain good clear audio, such as selectable RF power at 50 or 100 mW, a compatibility mode to ensure analog receivers will work well with the transmitter, and a Servo microphone input allowing you to use a microphone or line level inputs.
In addition, the durable LT transmitter is enclosed in machined-aluminum housing. It has a detachable antenna that can easily be removed for transportation. An LCD and membrane switch interface make the LT transmitter easy to setup and simple to use. This transmitter operates in the B1 frequency range between 537.600 to 614.375 MHz.
In the Box
Lectrosonics LT Beltpack Transmitter (B1: 537.600 to 614.375 MHz
Limited 1-Year Warranty
Table of Contents
537.600 to 614.375 MHz
Steps: Selectable 25 or 100 kHz
RF Power Output
50 or 100 mW
25 to 32 kHz, 5 kHz deviation (Digital Hybrid mode)
± 75 kHz max. (Digital Hybrid mode)
60 dB below carrier
Equivalent Input Noise
-120 dBV (A-weighted)
Mic: Nominal 2 to 300 mV, before limiting Greater than 1 V maximum, with limiting Instrument: 1 MOhm high level
DSP controlled, dual envelope "soft" limiter with greater than 30 dB range
Gain Control Range
44 dB, digital control
Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation LCD bar graph
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
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)
Galvanized steel, flexible wire
2x AA alkaline, lithium, NiMH rechargeable
Duracell Quantum: 4.75 hours Eneloop 2400 mAH NiMH: 6 hours
USB on side panel for firmware updates
Dimensions (L x W x H)
2.85 x 2.45 x 0.75" (72 x 62 x 19 mm)
5.9 ounces (169 grams), with alkaline AA batteries