TOA TS-904 Microphone Instruction Manual
- June 3, 2024
- TOA
Table of Contents
TOA TS-904 Microphone

Thank you for purchasing TOA’s Microphone. Please carefully follow the instructions in this manual to ensure the long, trouble-free use of your equipment.
GENERAL DESCRIPTION
The TS-903 and TS-904 Microphones are designed for exclusive use with the Chairman units (TS-811, TS-911, TS-821, and TS-921) and the Delegate units (TS-812, TS-912, TS-822, and TS-922) of the TOA Infrared Conference Systems. The TS-903 is of standard type, and the TS-904 is of long type.
INSTALLATION
SPECIFICATIONS
| Model No. | TS-903 | TS-904 | 
|---|---|---|
| Type | Electret condenser microphone | |
| Directivity | Unidirectional | |
| Rated Impedance | 1.8 kΩ | |
| Rated Sensitivity | –37 dB (1 kHz, 0 dB = 1 V/Pa) | |
| LED Indicator | Speech indicator (ring type) | |
| Frequency Response | 100 Hz to 13 kHz | |
| Output Connector | Equivalent to XLR-4-12C | |
| Operating Temperature | 0 to 40 ℃ (32 to 104 ºF) | |
| Operating Humidity | 90%RH or less (no condensation) | |
| Finish | Gooseneck: Stainless steel, black | 
Other: ABS resin, black
Length| 368 mm (14.49″)| 518 mm (20.39″)
Weight| 90 g (0.21 lb)| 105 g (0.23 lb)
Applicable Unit (Option)| Chairman unit: TS-811, TS-911, TS-821, TS-921
Delegate unit: TS-812, TS-912, TS-822, TS-922
Note: The design and specifications are subject to change without notice for improvement.
Traceability Information for Europe
Manufacturer:
TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo, Japan.
Authorized representative:
 TOA Electronics Europe GmbH Suederstrasse 282, 20537 Hamburg, Germany.
URL: https://www.toa.jp/.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>
