Tone of Speakers
VERY often the tone of a small cone speaker can be vastly improved by using a baffle board. Obtain a square of wallboard and cut a hole in the centre slightly smaller than the diameter of the cone. Now, with three small clamps fastened by screws or bolts, the rim of the speaker can be fastened into place. It is not generally known that the moving coil speaker is no better than ones costing one-tenth the price if used without a baffle. It will then be realised that even the. cheapest speaker needs some sort of 2 baffle if any of the lower register are to be reproduced.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19290412.2.64
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Radio Record, Volume II, Issue 39, 12 April 1929, Page 29
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111Tone of Speakers Radio Record, Volume II, Issue 39, 12 April 1929, Page 29
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