SoundMate Listening System (Kit)


Product Highlights

  • 17 user selectable frequencies
  • Balanced/Mic, line, or 70 volt XLR as well as an unbalanced ¼” input
  • Kit Includes: TELEX ST-300 Soundmate Transmitter (1), TELEX SR-400 Soundmate Receiver (5), TELEX HED-2 Soundmate Headset (5)
Rentex No. COMTSA1 | Mfr No. F.01U.118.400/F.01U.118.401

The Telex ST-300 is a personal and assistive listening wireless base transmitter, featuring 17 user selectable frequencies in the VHF band. The unit is equipped with a comprehensive set of front-mounted control buttons, a backlit LCD display, a headphone jack with an adjustable level knob for input signal monitoring, and a peak reader on the LCD display for visual input monitoring.

The Telex SR-400 is a portable VHF 16-channel frequency-agile receiver with clear reception and treble boost control for improved intelligibility,
designed for assisted listening applications.


  • (1) TELEX ST-300 Soundmate Transmitter
  • (5) TELEX SR-400 Soundmate Receiver
  • (5) TELEX HED-2 Soundmate Headset

Telex SR-400 17-Channel Assistive Listening Receiver

Type of Receiver Assistive Listening Receiver
RF Carrier Frequency Range 72 – 76 MHz
Approx. Working Range 300′
Overall Frequency Response 100 Hz – 10 kHz, (+/-3dB)
Signal-to-Noise Ratio >60 dB
# Of Channels 17
Type of Output(s) 1 x 1/8″ Mini Jack
Headphone Monitoring 1 x 1/8″ Mini
Power Requirements 2 x “AA” Batteries
Battery Type/Approx. Life Two (2) “AA” Batteries/30 Hours Alkaline, 10 Hours NiCad
Display Backlit On/Tuning Indicator
Mounting Options Belt or Pocket
Antenna Type Uses Earphone Wire
Dimensions 4 x 2.75 x 1″ (101 x 70 x 25mm) HxWxD
Weight Not Specified by Manufacturer



Telex ST-300 VHF Wireless Personal Listening System Transmitter

General System
System Modulation FM
Frequency Range 72 – 76 MHz
Operating Range 300′ (91 m)
Tuning Frequency Control Crystal, +/-.005% tolerance
Power 13 – 20 VDC/VAC 115 VAC, 6 0Hz 300 mA
Battery Life Not Applicable
Charging Time Not Applicable
FCC License Part 15, B5DM508




Output 80 K µ V/m @ 3 m
Deviation +/-25 kHz
Modular Distortion Not Specified by Manufacturer
Sensitivity Not Specified by Manufacturer
IF Bandwidth Not Specified by Manufacturer
Image Rejection Not Specified by Manufacturer
Controls and Indicators 1 x Power Switch 2 x Up/Down Increment Buttons 1 x Set Button 1 x Headphone Monitor Volume Control Knob 1 x Backlit LCD Display
Connectors 1 x 3-pin XLR Female, Balanced Input 1 x 1/4″ TS Phone, Unbalanced Input 1 x Screw-In BNC Antenna Connector 1 x 1/4″ Stereo Headphone Out
Antenna 1 x Detachable Telescoping 1/4 Wave
Dimensions 1.8 x 7.6 x 5.9″ (45 x 192 x 150 mm)
Weight 4.4 lb (2 kg)(shipping weight)


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