JTS SIEM-111 System

JTS SIEM-111 System

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The SIEM-111 System features reliable JTS UHF PLL technology.

There are 961 selectable UHF channels available. As many as 16 sets of SIEM-111T transmitters can operate on the same stage.
The system offers 4 groups, with each group having 16 compatible preset channels to choose from. This allows the monitor engineer to set up systems quickly and easily.
MPX Stereo Audio Transmission / Reception, switchable to Mono operation if desired. All metal case construction on the SIEM 111R and SIEM 111T.
The JTS advanced circuitry assures outstanding signal-to-noise ratio. IE-1 and IE-6 earphones seal off the ear canal with JTS designed Dyna-Driver ear buds which reduce undesired stage noise, ambient sound levels.

3 pairs of different sized Silicon sleeves included with the IE series earphones ensure a right fit for the users ear canal and comfort.


  • SIEM111-T transmitter
  • SIEM-111R beltpack receiver
  • IE-1 earphones, stereo system


Carrier Frequency Range

  • 638-662MHz
    RF Output Power
  • 10 mW
    Nominal Frequency Deviation (modulation)
  • Ā±40KHz
    Audio Input Impedance
  • 20kĪ© Nominal Input Level
  • -10 dBV ; 0 dBV (ATT-10 dBV)
    Maximal Input Level
  • 10 dBV ; 20 dBV (ATT-10 dBV)
    LCD Display
  • AF Level, Stereo/Mono, Attenuation Level, Group, Channel, Frequency

Audio Input Connector
* 2 x Balanced XLR /Ƙ6.3mm phone Combo Socket

Audio Output Connector
* 1 x 1/8ā€ Stereo Phone Jack * 1 x 1/4ā€ Stereo Phone Jack

Loop Out Connector
* 2 x Balanced Loop Out Socket

Switching Power Supply
* 100-240V Switching power supply

* Input Level Select Switch * 0dB / -10dB

Earphone Output
* 60 mW

Minimum Load Impedance
* 16Ī©

LCD Display
* RF Level, Lock-On, Battery Fuel Gauge, Stereo/Mono, HF booster, Dynamic Limiter, Group, Channel, Mute, Frequency

Output Connector
* 1/8ā€ Stereo Phone Jack

Power Supply
* 2 AA batteries

Operation Hour
* Over 12 hours

Product Specs