10/30/2022 0 Comments Old gibson ampsIt’s doubtful whoever was designing Gibson’s amps at the time would have chosen such a circuit for a high-fidelity amplifier (anybody have one of these black-covered models?).Īlso like the first E-150 amps, the first 100s got their juice from an 80 rectifier, came fitted with two parallel inputs and had no controls in the circuit. Twin 42 power pentodes operating in push/pull were probably fed by a transformer phase inverter, although there are other, less-than-ideal (but cheaper) ways to achieve this function. Like the early E-150 model, only two stages of amplification were employed, with a 6N7 twin-triode (amplification factor 35) handling the gain department (again, run in parallel for Class A operation, as specified by the RCA tube manual). Embossed lines framed the perimeter of the cabinet, with metal corner protectors on the bottom. Dressed in “Strong imitation black leather covering” with a white Gibson logo stenciled on the lower right corner of the face, the box housed a 10″ field-coil speaker and a bottom-mounted, rear-facing chassis. Offered on its own at $50, the first EH-100 amps were promoted as the mate to the new EH-100 Hawaiian guitars. Covered here on a year-to-year basis, it’s evident Gibson not only changed the EH-100 amplifier’s look annually (think automobile manufacturing), but the engineering department was continually upgrading the circuitry. OLD GIBSON AMPS FULLDespite their relatively late start, the company would quickly go on to dominate the pre-WWII electric market, with a full line of high-end instruments, such as mandolins, banjos, doubleneck Hawaiians, an early pedal steel, experimental violins and basses, etc.Ĭomplementing these at the lower end of the market were the small line of 100 (and later 125) instruments and their matching amplifiers. It should be noted Gibson did not offer a Spanish-neck electric guitar to go with the original 100 amp, as they were just releasing their first magnetic-pickup electric Spanish, the ES-150 (which wouldn’t be shipped to dealers until ’37). Like these early 150 amps, the four-tube 100 amp lacked both volume and tone controls. Like the competition, the earliest EH-100 guitar lacked the Alvino Rey-designed tone control, but it wasn’t long before Gibson added one to its lower-priced instrument, making the 100 set comparable in performance to the four-tube 150 sets from earlier in the year. offered early electric sets for under $100, they didn’t say Gibson. While National-Dobro had already released its lower-priced Supro line and mail-order catalogs like Montgomery Ward, Speigel, etc. So introduced in Gibson’s Catalog X of very late 1936, the EH-100 Hawaiian set cost a third less than the company’s EH-150 set, which by this point had the updated six-tube chassis and “Echo” extension speaker. OLD GIBSON AMPS PROFESSIONAL“No longer is the electric Hawaiian Guitar restricted to professional players – here is a genuine Gibson instrument that costs only $100, complete with instrument, case, amplifier with slip cover, and cord.”
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