26421 …Brand New Production of original Altec 26421 Diaphragm. This is a Higher Power version of the 34647 used in the Altec 909-16a, Altec 802, Altec 806, Altec M400, Altec 604-16G, Altec 604-16H, Altec 604-16K, Altec Model 19, Altec 416, Altec 9872-8F
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