SL Lavalier SET

Sennheisers smallest lavalier microphone set optimized for speeches and lectures.
Choose product variant


The set includes the bodypack transmitter, stationary receiver and everything to use or install.
It comes wiht the MKE 1 condensor lavalier microphone – so not just A lavalier mic, but the best and most unobstrusive one for great presentations with best speech clarity.

All sets also come with rechargeable accupacks with up to 15 hrs of operating time. The accupack is also USB rechargeable, the cable is in the box, the USB socket is presumably just a step away from you.

The two types of sets are either Rackmount Sets (-R version), which come with everything needed for rack mounting, or Case Sets (-C version), in a transport case – without rackmounts, if you do not want to install the receiver.


  • Automatic frequency and interference management

  • Excellent speech intelligibility

  • Full, natural sound with low ambient noise

  • Automatic frequency and interference management

  • Lockable 3.5 mm jack socket

  • Secure 256 bit AES encryption

What's in the box?

  • MKE 1
  • SL Bodypack DW
  • SL Rack Receiver DW
  • BA 30 rechargable battery
  • Case or GA 4 Rackmount Kit and Pouch

Technical Data

  • Frequency response
    20 to 20,000 Hz
  • THD, total harmonic distortion
    typ. 0.1 %
  • Transducer principle
  • Power consumption
    350 mA
  • Pick-up pattern
  • Nominal impedance
    1 kΩ
  • Signal-to-noise ratio
    > 90 dB(A)
  • Equivalent noise level
    27 dB
  • Maximum sound pressure level (passive)
    143 dB
  • RF output power
    adaptive, up to 250 mW (country-specific)
  • Power supply
    12 V DC
  • Antenna connector
    2 x reverse SMA
  • Current consumption
    approx. 240 μA
  • Audio output level (balanced)
    max. -18 dBu, typ. -24 dBu
  • Audio output level (unbalanced)
    max. +6 dBu
  • Dynamic range
    > 120 dB(A)
  • Operating voltage (stand alone)
    4,5 - 15 V
  • RF sensitivity
    < -90 dBm
  • Sensitivity in free field
    5 mV/Pa ± 2.5 dB (at 1 kHz)
  • Sampling rates
    24 bit/48 kHz
  • Connection
    Audio Out: XLR 3M Audio Out: 2 x RCA Network: RJ 45


  • Transport information for Lithium-Ion batteries
    • Transport information for Lithium-Ion batteries (570 KB) Download

      Revision Date: 2020-02-09 Revision Number: 1.0

  • Instruction Manual
    • Instruction manual SpeechLine Digital Wireless (PDF) (15 MB) Download

      Printable PDF version of the interactive system documentation of the SpeechLine Digital Wireless series.

    • Instruction manual SpeechLine Digital Wireless (HTML) Download

      Information on the SpeechLine Digital Wireless system and instructions on how to install and operate the components of SpeechLine Digital Wireless

  • Spec Sheets
    • System Specification SpeechLine Digital Wireless (1.4 MB) Download

    • Product Specification SL Lavalier Set (420 KB) Download