![]() ![]() The photos below depict each of these variants as mounted in a C-250 and then in an array together, with the long play at top, standard in the middle, and Edisonic at the bottom. I understand that the dance model buys its much increased volume at the expense of similarly increased distortion, and my impression is that the Edisonic does not entirely escape that tradeoff either. The dance model has further spring loading for more volume yet, and it is visually distinctive because it has a flange on top of the diaphragm housing rather than flowing smoothly into the neck of the output tube. The Edisonic has a very large, heavy weight, and the stylus bar is spring loaded for even greater volume. It also has a much finer stylus to play the 450 track per inch long play Edison discs (standard discs were 150 tpi). The long play, which has the word "long" stamped into the diaphragm housing, uses a purely gravity floating weight, but it is much lighter than that of the standard type. Its floating weight relies entirely on gravity and is intermediate in size between those of the long play and new standard models. Briefly, the standard reproducer is the most common (as you might expect), and overall probably the most successful. ![]() I can't show you a dance, as I don't own one, but I do have examples of the other three. Diamond disc reproducers came in four broad classes: ![]()
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