66 R Speaker Unit The Blue Spot Masterpiece This wonderful unit ha8 been de- signed to handle enormou8 out- puts obtainable from modern re- ceivers using Super power valves: Ac impedance at 1000 cycles: 9000 ohms. Permissible DC Current 50 M/A. Price 40 / FJ W: FEAR & Co. WILLIS STREET, 66K , 48 illustrated, 30 / = WELLINGTON. IIILIEIIII
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https://paperspast.natlib.govt.nz/periodicals/RADREC19300919.2.33.1
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Radio Record, Volume IV, Issue 10, 19 September 1930, Page 21
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55Page 21 Advertisement 1 Radio Record, Volume IV, Issue 10, 19 September 1930, Page 21
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