66 9 } 66 9} It Puts the Talk in Talkies: THE S-M 690 Super-Power Amplifier Specially designed for ube in Picture Theatres, Football Grounds, Sports 'Stadiums, Racc: courses, Or wher- erer an amplifier of tremendous power i8 required in con' junction with the highest quality re- production of voice and music: This special am Dlifier operates through three stages ~two of them power push-pull _ and i8 arranged for microphone, radio 01 single Or double rccord input work. It has 13,000 to 16,000 milliwatts distortionless power' output; The S-M 890' Super-Power Amplifier is now being used in various "Talkie" installations throughout New Zealand. Could you have better PROOF of its' capabilities: It' s a Silver-Marshall Product: NZ MASTER AGENTS BOND & BOND;LTD: AUCKLAND:
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https://paperspast.natlib.govt.nz/periodicals/RADREC19290802.2.54.1
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Radio Record, Volume III, Issue 3, 2 August 1929, Page 21
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121Page 21 Advertisement 1 Radio Record, Volume III, Issue 3, 2 August 1929, Page 21
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