Lectrosonics SSM Tx

Digital Hybrid Wireless® Micro Transmitter

The SSM is ideal in theatrical or any other production where concealment in costuming is required. In spite of its tiny size, the transmitter offers an extensive feature set and performance on par with all of the Digital Hybrid Wireless® models.

Frequencies are selectable in 100 kHz or 25 kHz steps across a maximum tuning range of 76.7 MHz. This yields a total of 3072 available frequencies across three standard frequency blocks. The tuning range varies in other blocks to meet applicable frequency allocations.

The servo bias input accepts mic or line level signals with a wide range of gain adjustment in 1 dB steps. Accurate LED indications on the keypad allow precise gain adjustments to be made for the maximum signal to noise ratio and minimum distortion. The limiter in the preamp can cleanly handle signal peaks over 30 dB above full modulation, allowing the input gain to be set high enough to achieve the maximum signal to noise ratio, yet provide protection against input overload.

Along with providing peerless audio quality with wide frequency response and dynamic range in Nu Hybrid mode, the technology used in the SSM includes compatibility modes for Lectrosonics Mode 3 and IFB receivers.

  • Tunable across 3 frequency blocks 

  • Digital Hybrid Wireless® audio for compandor-free digital quality

  • Selectable 25 or 50 mW RF power

  • Compatibility modes for use with analog receivers

  • 25 or 100 kHz tuning steps 

  • Wide range input gain control in 1 dB steps

  • Quick change Lithium-ion rechargeable battery

  • Audio coupled remote control


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OPERATING FREQBand A1: 470.100 - 537.575
Band B1: 537.600 - 607.950
FREQ SELECTION STEPSSelectable; 100 kHz or 25 kHz
RF POWER OUTPUTSelectable; 25 or 50 mW
COMPATIBILITY MODENu Hybrid, Mode 3, IFB
PILOT TONE25 to 32 kHz; 3.5 kHz deviation (Nu Hybrid mode); ± 50 kHz max. (Digital Hybrid mode)
FREQ STABILITY± 0.002%
INPUT LEVELNominal 2 mV to 300 mV, before limiting. Greater than 1V maximum, with limiting.
INPUT IMPEDENCE• Mic: 300 or 4.5 k ohm; selectable
• Line: greater than 100 k ohm
INPUT LIMITERDSP controlled, dual envelope “soft” limiter with greater than 30 dB range
GAIN CONTROL RANGE44 dB; digital control
MODULATION INDICATORSDual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation
AUDIO PERFORMANCE (Digital Hybrid and Nu Hybrid)
FREQ RESPONSE70 Hz to 20 kHz (+/-1dB)
LOW FREQ ROLL OFF–12 dB/octave; 70 Hz
THD0.2% (typical)
CONTROLSSide panel membrane switches with LCD interface for power on/off and all setup and configuration controls
AUDIO INPUT JACKLEMO 00 Series 3-pin
ANTENNAGalvanized steel, flexible wire
BATTERYLithium-ion 3.6 V 1000 mAH LB50 battery pack
BATTERY LIFE6 hours per charge
WEIGHT2.3 ounces (65.2 grams) including lithium battery pack

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