LOUD SPEAKER FOR TELEPHONES.
ITHE. : PEESS Special Service.] WELLINGTON, November 3. Special arrangements have been made by the Post and Telegraph Department for testing out a loud speaker installation, for use on telephones by people who suffer from bad hearing. One such amplifier has been imported and is now in use on a business telephone in Wellington. The results, it is understood, are highly satisfactor v.
The amplifier is a small wooden \K>x which is connected with the telephone and the degree of sound may be regulated easily.. Unless "tuned" bv a ■small button, the hearing is not affected for nornial persons.
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Press, Volume LXIII, Issue 19149, 4 November 1927, Page 9
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102LOUD SPEAKER FOR TELEPHONES. Press, Volume LXIII, Issue 19149, 4 November 1927, Page 9
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