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HomepageMicrophonesWireless Microphones › Lectrosonics SMWB
Lectrosonics SMWB

The design of the SMWB transmitter delivers the advanced technology and features of Digital Hybrid Wireless in a Lectrosonics belt-pack transmitter at a modest cost. Single Battery

To meet the demand for both extended operating range and extended battery life, the "WB" series SM transmitters offer selectable output power of 25, 50 and 100 mW. With higher power output, the operating range is improved at the expense of battery life. When range is not an issue, a lower power level can be used to extend the battery life.

The transmitters offer hands free setup and adjustment using audible tones. They can be put to sleep to conserve battery power during setup while buried inside costuming, then awakened for normal operation when the production begins. Other features include input gain adjustment in 1 dB increments over a 44 dB range and adjustable low frequency audio roll-off for 3 dB down points at 35, 50, 70, 100, 120 or 150 Hz to control subsonic and very low frequency audio conten

The DSP-based design works with all Digital Hybrid receivers, and is backward compatible for use with Lectrosonics 200 and 100 Series, IFB receivers and some analog receivers from other manufacturers in addition to its native Digital Hybrid Wireless operating mode.
  • Selectable output power to maximize battery life or operating range
  • Ultra-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 3 standard frequency blocks
  • Update firmware in the field via Micro SD card reader
  • Alternate use as recorder on internal microSDHC memory card
  • Specifications

    Operating frequencies:
    Band A1: 470.100 - 537.575
    Band B1: 537.600 - 614.375 (608.000 to 614.000 excluded)
    Band B2: 563.200 - 639.975 (608.000 to 614.000 excluded)
    Band C1: 614.400 - 691.175

    Channel Spacing: Selectable; 25 or 100 kHz

    RF Power output: Switchable; 25, 50 or 100 mW

    Compatibility Modes: Digital Hybrid Wireless (NU Hbr),
    200 Series, 100 Series, Mode 3, Mode 6, IFB

    Pilot tone (Digital Hybrid Mode): 25 to 32 kHz; 5 kHz deviation

    Frequency stability: ± 0.002%

    Deviation: ± 75 kHz max. (Digital Hybrid Mode)

    Spurious radiation: Compliant with ETSI EN 300 422-1

    Equivalent input noise: -125 dBV, A-weighted

    Input level:
    If set for dynamic mic: 0.5 mV to 50 mV before limiting
    Greater than 1 V with limiting

    If set for electret lavaliere mic: 1.7 uA to 170 uA before limiting
    Greater than 5000 uA (5 mA) with limiting

    Line level input: 17 mV to 1.7 V before limiting
    Greater than 50 V with limiting

    Input impedance:
    Dynamic mic: 300 Ohms

    Electret lavaliere: Input is virtual ground with servo adjusted constant current bias

    Line level: 2.7 k ohms

    Input limiter: Soft limiter, 30 dB range

    Bias voltages: Fixed 5 V at up to 5 mA
    Selectable 2 V or 4 V servo bias for any electret lavaliere

    Gain control range: 44 dB; panel mounted membrane switches

    Modulation indicators: Dual bicolor LEDs indicate modulation -20, -10, 0, +10 dB referenced to full modulation

    Controls: Control panel w/ LCD and 4 membrane switches

    Low frequency roll-off: Adjustable from 35 to 150 Hz

    Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB

    Signal to Noise Ratio (dB): (overall system, 400 Series mode)

    SmartNR No Limiting w/Limiting
    OFF 103.5 108.0
    NORMAL 107.0 111.5
    FULL 108.5 113.0

    Total Harmonic Distortion: 0.2% typical (400 Series mode)

    Audio Input Jack: Switchcraft 5-pin locking (TA5F)

    Antenna: Flexible, unbreakable steel cable.

    Battery: AA lithium, disposable

    Battery Life w/ Lithium AA:
    SMWB 50 mW (1 AA): 7.25 hrs
    SMWB 100 mW (1 AA): 5.5 hrs
    SMDWB 50 mW (2 AA): 14.5 hrs
    SMDWB 100 mW (2 AA): 14 hrs

    Weight (w/ litium batteries): SMWB: 2.7 oz.. (75.9 grams), SMDWB: 3.7 oz.. (105 grams)

    Overall Dimensions: SMWB: 2.3 x 1.8 x 0.64 inches; (without microphone), 58 x 46 x 16 mm, SMDWB: 2.3 x 2.4 x 0.64 inches; 58 x 60 x 16 mm

    Emission Designator: 180KF3E

    Storage media: microSDHC memory card

    File format: .wav files (BWF)

    A/D converter: 24-bit

    Sampling rate: 44.1 kHz

    Recording modes/Bit rate:
    . HD mono mode: 24 bit - 144 kbytes/s, 32 bit - 192 kbytes/s
    . Split gain mode: 24 bit - 288 kbytes/s, 32 bit - 384 kbytes/s

    Type: Analog mic/line level compatible; servo bias preamp for 2V and 4V lavaliere microphones

    Input level:
    . Dynamic mic: 0.5 mV to 50 mV
    . Electret mic: Nominal 2 mV to 300 mV
    . Line level: 17 mV to 1.7 V

    Input connector: TA5M 5-pin male

    Audio Performance
    Frequency response: 20 Hz to 20 kHz; +0.5/-1.5 dB

    Dynamic range: 110 dB (A), before limiting

    Distortion: < 0.035%

    Operating temperature range

    Celsius: -20 to 50

    Fahrenheit: -5 to 122
    Related products
    Free shipping in Canada. Conditions
    Additional information
    For more information about the SMWB, please visit the website of Lectrosonics
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