Telex SMP-400
Hard of Hearing Sys.w/4 Recvrs


Our Price: $2,132.00
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The Soundmate SMP-400 is a portable, battery operated, VHF wireless personal monitoring system packed into a professional carrying case with a foam-padded interior. The system offers ease of operation, clarity of sound, and a 300' operating range.

The SMP-400 system consists of the PST-170 transmitter, which operates on one of 17 selectable frequencies, 4 17-channel, frequency agile SR-400 portable receivers, with companion HED-2 collapsible headphones, and the HM-2 headworn microphone, which features a discreet, lightweight, behind-the-head headband. The case and ten AA batteries are also part of the package.

The SMP-400 is designed as a low cost alternative solution for bus and museum tours, house of worship or theatrical assistive listening applications, and conferencing situations involving multi-client, multi-user translation needs.


  • 17-channel, frequency-agile operation for receivers, 17 selectable frequencies available for transmitter
  • Portable wireless personal monitoring/assistive listening system for churches, museum tours, conferencing, and educational applications
  • 300' operating range
  • Backlit LCD for transmitter, receiver
  • E.D.R.(Enhanced Dynamic Range)compander circuitry for transmitter and receiver for clearer, more consistent output
  • Lightweight, collapsible folding headsets
  • Comfortable, discreet behind-the-head headband for microphone
  • Large, professional carrying case with padded foam interior and custom compartments
  • Convenient AA battery operation with 20 hr. battery life for receiver



  • RF Carrier Frequency Range:
    72.1 - 75.4 MHz
  • Selectable Channels:
  • Compatible Channels:
  • Operating Range:
    300' (91 m)
  • Frequency Response:
    100 Hz - 10 kHz
  • Signal-to-Noise Ratio:
    Normal: 58 dB
    EDR Enabled: 77 dB

PST-170 Transmitter

  • RF Output Power:
    80K uV/m @ 3m
  • Frequency Selection:
    Top Panel Set, Switch buttons
  • Frequency Indicators:
    LED display, channel letters
  • Antenna:
    Permanently attached trailing wire
  • Audio Input Connectors:
    1 x 1/8" Stereo/Mono Mini Jack
    1 x TA4M Mini XLR Jack
  • Limiting:
    Built-In, Fixed Threshold
  • Power Requirements:
    2 x AA Batteries
    2 x Nickel-Cadmium Batteries

SR-400 Receiver

  • Frequency Selection:
    17 Channels
  • Antenna:
    Omnidirectional in earphone/headphone cord
  • Power Requirements:
    2 x AA Batteries
    2 x NiMH batteries
    2 x Nickel-Cadmium batteries
  • Battery Life:
    Alkaline: 30 hrs.
    2 x NiMH: 20 hrs.
    Nickel-Cadmium: 10 hrs.
  • Battery Status Indicator
  • Limiting:
    Built-In, Fixed Threshold
  • Equalization
  • Personal Mix Control:
    Top Panel On/Off/Volume Knob
    Treble Boost Control Button
    Frequency Set Button

HM-2 Microphone

  • Transducer Type:
    Cardioid Dynamic
  • Frequency Response:
    100 Hz - 10 kHz
  • Cable Length:
    3' (1 m)
  • Connector:
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