KERSTEN EXPONENTIAL PUBLIC ADDRESS SPEAKERS Type 2505A- for Theatre, Dance Hall or Rink: Size : Height, 40zin;; Width; 30in. ; Depth, 30zin. ; Air Column, 1Oft. f11/1o/- Type No_ IB Trumpet, Bell diameter, 30in. ; Length, 66in. For use out-of-doors or in large halla _wherever transmission to a great distance is necesgary 45 Kerstern Special Power Electro-dynamic Unit, for use with above horns, 6-volt type, with trangformer 820 SPECIAL BROADCASTING Send for Illustrated MICROPHONE. Double Button, Lists. low 'kiss level, high sensitivity Was 236/15 /- 624 L. B SCOTT Ltd_ Our Price BOX 395, CHRISTCHURCH
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310313.2.52.1
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Radio Record, Volume IV, Issue 35, 13 March 1931, Page 18
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90Page 18 Advertisement 1 Radio Record, Volume IV, Issue 35, 13 March 1931, Page 18
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