66 1 > 86 2} It Puts the Talk in Talkies. THE S-M 690 Super-Power Amplfier Specially 'degigned for use In Pcture Tbeatres, Football Grounds, Sports Stadiums, Race: courses, Or wher- ever an amplifer of tremendous power ig required in con- junction with the highest quality re" production of voice and music. This special am plifier operate8 tbrough: three stages ~two of them power pugh-pull and Je arranged for microphone; radio O1 single or double record input work: It hag 15 O00 to 16,000 milliwatte distortionlese poter output; The S-M 890 Super-Power Amplifier i8 2Qw being ueed in variou; #Talkie" ingtallations throughout New Zealand. Could you have better PROOF of itb" capabilities. It' s 8 Silver-Marshall Product:_ NZ MASTER AGENTS BOND & BOND,LTD: AUCKLAND:
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https://paperspast.natlib.govt.nz/periodicals/RADREC19290809.2.40.1
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Radio Record, Volume III, Issue 4, 9 August 1929, Page 17
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122Page 17 Advertisement 1 Radio Record, Volume III, Issue 4, 9 August 1929, Page 17
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