Sennheiser FreePort Lavalier Wireless System  

Product #581417

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Item Note:

This product has been discontinued but may be available as a Open Box item.

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An affordable presentation system that offers clarity and mobility.

The FreePort System ensures maximum clarity of speech during lectures, presentations and theater performances. The system includes a bodypack transmitter, a diversity receiver and an inconspicuous clip-on microphone with an omnidirectional pick-up pattern.

Consumer Alert:

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCCs wireless microphone website at:

  • 4 switchable UHF frequencies for interference-free reception
  • Absolutely safe transmission
  • Diversity Technology for highest reception quality
  • Adjustable Squelch for undisturbed operation
  • Receivers built in robust metal housing
  • Dynamic processor for cristal-clear sound
  • Includes:
  • 1 bodypack transmitter SK 2
  • 1 clip-on microphone ME 2-2
  • 1 diversity receiver EM 1
  • 1 power supply
  • 1 user manual

Get your message out wherever you are! Order today.


FreePort Lavalier Wireless System Specifications:

  • RF frequency range: UHF 691-693MHz
    Transmission/receiving frequencies: 4
    Switching bandwidth: 2 MHz
    Frequency response : 80 - 16.000 Hz
    Signal-to-noise ratio: 95 dB(A)
    THD, total harmonic distortion: < 1%
    Audio output level (balanced): XLR, +16 dBu
    Audio output level (unbalanced): Jack, +10 dBu
    Power supply: 12 VDC nom
    Dimensions (Receiver) (H x W x D): 1.37" x 8.38" x 3.85" (35 x 213 x 98 mm)
    Weight (Receiver): 1.25 Lbs. (570g)
    RF output power 10 mW
    Operating time: 10 hours
    Power supply (Bodypack transmitter): 9V PP3
    Dimensions (Bodypack transmitter) (H x W x D): 2.36" x 3.93" x 1.18", (60 x 100 x 30 mm) with clip
    Weight (Bodypack transmitter): 3.17 Oz, (90 g) (without battery)
    Transducer; Microphone type (Clip-on microphone): permanently polarized condenser
    Pick-up pattern: omni-directional
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