Telex SM-2 - Personal Listening System - C

BH #TESM2C • MFR #F.01U.146.402
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Telex SM-2 Overview

The Telex Soundmate SM-2 is a portable, battery operated, VHF wireless personal monitoring system, notable for it's ease of operation and light weight of the principal components, clarity of sound, and a 300' operating range.

The Soundmate SM-2 system consists of the ST-300 transmitter, which operates on one of 17 selectable frequencies, 4 single-channel, fixed frequency SR-50 portable receivers, with 4 companion SEB-1 earbuds.

The SM-2 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.

Low-cost, portable wireless personal monitoring/assistive listening system for churches, museum tours, conferencing, and educational applications
300' operating range
Single channel, fixed frequency operation for receivers, 17 selectable frequencies available for transmitter
Backlit LCD for transmitter
E.D.R.(Enhanced Dynamic Range)compander circuitry for transmitter; clearer, more consistent output
Lightweight, discreet mono earphones
Convenient "AA" battery operation with extended 30 hr. battery life for receiver

Telex SM-2 Specs

General System
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
Channel Separation
Not Specified by Manufacturer
ST-300 Transmitter
RF Output Power
Normal: 25K µV/m @ 3 m
High: 80K µV/m @ 3 m
Frequency Selection
Front Panel Set/Increment/Decrement Buttons
Frequency Indicators
LED display, channel letters
Omnidirectional Telescoping Antenna
Audio Input Connectors
1 x 1/4" TS Phone, Unbalanced
1 x 3-pin XLR Female, Balanced
Nominal Input Level
Not Specified by Manufacturer
Maximum Input Level
42 dB
Input Pad Switch
Phantom Power Protection
Loop In/Out Connectors
Loop I/O Nominal Input Level
Loop I/O Maximum Input Level
Built-In, Fixed Threshold
Power Requirements
13-20 VDC or 12 VAC
115 VAC, 60 Hz @ 30mA Plug-In Wallpack Power Supply
Not Specified by Manufacturer
1.75 x 7.5 x 5.9" (45 x 192 x 150mm)
SR-50 Receiver
RF Indicator
Frequency Selection
Fixed, Single Channel
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
Personal Mix Control
Top Panel On/Off/ Volume Knob
Not Specified by Manufacturer
4 x 2.75 x 1" (101 x 70 x 25mm)
Transducer Type
Telethin Driver
Sensitivity (0 VU)
Not Specified by Manufacturer
32 Ohms
Cable Length
3'(1 m)
Connector Type
1/8" Mini Plug
Ear Inserts
Frequency Response
100 Hz - 10 kHz
Packaging Info
Package Weight
4.95 lb
Box Dimensions (LxWxH)
18.2 x 11.5 x 4.3"

Telex SM-2 Reviews

The whole building

By Frank B.
Rated 4 out of 5
Date: 2014-01-29

We have a sanctuary that is about 75 feet long by 100 feet wide. This transmitter covers the room pretty well on low power using the antenna provided. On high power, we can cover the entire building pretty well. You'll probably want to purchase some different headphones as the provided earbuds are only for one ear. Any headphones work.

See any errors on this page? Let us know


Encryption ?
Asked by: Anonymous
The SoundMate is a simple VHF wireless system. There is no encryption available on these units.
Answered by: Jeff P.
Date published: 2018-08-27
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