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The Duet Sixteen preset kit was manufactured by the Electro Tone Corporation in the 1960s as an after-market add-on for Hammond M-2 and M-3 spinet organs. The Duet Sixteen was not suitable for Hammond M organs, but could be fitted to M-100 series and L-100 series, even though these models already had Hammond factory presets. For Hammond M organs, Electro Tone Corporation manufactured the Electro Tone Mark II preset kit, as well as manufacturing the Electro Tone OrganMate reverb kit for any Hammond organ requiring reverb and the Electro Tone PER 200 percussion kit.

Cable Identification on the Electro Tone Duet Sixteen Rotary Switch

Cable #1 (Upper Drawbars)

Cable #2 (Lower Drawbars)

Cable #3 (Upper Drawbar Wires)

Cable #4 (Lower Drawbar Wires)

Cable #5 (Right Side Input (Matching) Transformer)

Cable #6 (Left Side Input (Matching) Transformer)

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