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It had a plexi panel and two inputs in one channel, but in contrast with the 100 watt heads made by Marshall, the first series had split tone controls similar to the Sound City amps. For the second series, in late 1968, Marshall reverted to ordinary passive tone controls , and was called "Marshall Major".
Below is a list of NEMA enclosure types; these types are further defined in NEMA 250- Enclosures for Electrical Equipment. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size.
T-100 series 1968–1975 [36] A tonewheel spinet with a transistor / solid-state power amplifier TTR-100: portable T-100 produced for the European market. [37] T-200: T-100 with built in leslie and extra percussion. [citation needed] T-400: as T-200 but with Drum machine. [citation needed] T-500: as T-400 but revised case.Last tonewheel built.
Soon after the Rose-Morris deal had ended in late 1980, Marshall repackaged two MV models, the 2203 and the 2204 (at 100 and 50 watts, respectively), along with the 1959 and 1987 non-master volume Super Lead in a new box with a new panel, and called it the "JCM800" series (named after his initials and the registration plate of his car). [23]
The Ampeg SVT is a bass guitar amplifier designed by Bill Hughes and Roger Cox for Ampeg and introduced in 1969. The SVT is a stand-alone amplifier or "head" as opposed to a "combo" unit comprising amp and speaker(s) in one cabinet, and was capable of 300 watts output at a time when most amplifiers could not exceed 100 watts output, making the SVT an important amp for bands playing music ...
He made the first Trainwreck amp in his shop in New Jersey, in late 1982/early 1983. With inspiration from Atlantic Records Caspar McCloud the amp was named 'Ginger' after Caspar's wife. [ 6 ] His first amps (later named "Liverpool 30") were based on the 4 × EL84 configuration of the Vox AC30 . [ 1 ] "
Some two channel amplifiers, or stereo amplifiers, have the built in facility to operate in bridge mode by operating a switch and observing the input and output connections detailed on the back panel or in the manual. This option is most often found in high power PA equipment or amplifiers designed for car audio applications.
GD350X, GD350Y – 350 V/3...200 μA Corona voltage reference, all-glass wire-ended GD550W – 550 V, 1.5 J Discharge tube, e.g. for power relaxation oscillators , all-glass wire-ended GDT120M – 9 mA Gas-filled cold-cathode DC triode, one starter and a separate glow diode acting as an optical primer, miniature 7-pin base