This is the second of two videos depicting the restoration of a 1937 Gibson EH-150 amplifier. All repairs are discussed, as well as the very unusual nature of the circuit and the skillful modifications, probably done in the late 1930's, to create a second, high gain (and tone), channel. It should be noted that no existing schematics come close to describing the unique circuit in this amplifier, even before the early modifications were performed. Therefore, it may well be either an interim design or a one-of-a-kind unit, possibly custom built for the musician whose name is hand-lettered on the front of the cabinet.
Of the hundreds of amplifiers I have owned and worked on, this one is, by far, the most interesting and unique.
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6 сен 2024