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A History of Audio Connectors
by Ray A. Rayburn

Learn about the Type O (03-11); Type P (P-CG-11S, P-CG-12S, 13, and 14); Type UA (UA-3-11, UA-3-12, UA-3-13, and UA-3-14); Type X (X-11, X-12, X-13, and X-14); Type XL (XL-3-11, XL-3-12, XL-3-13, and XL-3-14); Type XLR (XLR-3-11C, XLR-3-12C, XLR-3-31, and XLR-3-32) Cannon connectors.

Download this four-page history as a PDF.