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The Fender Bassman was a bass amplifier introduced by Fender in 1952. Although it was originally designed for bass guitars, it was frequently used for normal electric guitar in rock and roll, blues, and country bands.
History
The Bassman was designed for the first mass-production electric bass, the Fender Precision Bass. It was introduced in 1952 and discontinued in 1983. Up to until 1954, the Bassman amps had only 1 speaker (circuit 5B6), but it was the four 10" speaker combination (officially introduced in 1955 as model 5D6-A) that came to be the greatest and most sought after amplifiers in history. The first 4x10 Bassman amplifiers started with a batch of prototypes in November and December 1954, model 5D6. No schematic for the 5D6 circuit have ever been found, and only 5 of these early examples are known to have survived. The earliest serial number known to still exist is 0013 (owned by Frank Roy), but 0035 (owned by Albert Tally), 0075, 0077 (Perry Tate), and 0780 are also known to exist. These rare few are known to sound better than the revered 1959 5F6-A circuit, and are fetching prices in excess of $15000 USD.
In 1990 Fender began producing a reissue of the 1959 Bassman model 5F6A, known as the '59 Bassman. The newest version of this reissue is the '59 Bassman LTD. The LTD version has a lacquered tweed covering and 4x10 inch Jensen speakers instead of the Eminence speakers used in the earlier '59 Bassman reissue series.
In 2009, Fender introduced the latest reincarnation of the original late '50s tweed Bassman amp, the Bassman TV series, which includes 4 sub-models such as the TV 10, TV Duo 10, TV 12 and TV 15. Each of these 4 amplifiers came with 10" or 12" speakers, 150 or 350W RMS (depending the model). Other features include an XLR output, Master Volume, Gain and a 3-band EQ with Treble, Middle, Bass, as well as "deep" and "bright" switches which boost the low and high frequencies.
The evolution of the Bassman amplifier followed that of the Fender amplification line. The Bassman amps of the 1950s were covered in tweed and had a more raw sound than later models. The combo tweeds were followed by the Blonde, Blackface, and Silverface "piggyback head" (except the Bassman 10 and 20, which were also combo amplifiers) versions of the 1960s, 1970s, and early 1980s with cleaner sound and more headroom.
A unique aspect of the Tweed Bassman circuit is the use of a cathode follower, which provides a slight compression of the sound while also allowing an increase in current, and thus more signal is sent to the power amp. It also had the secondary consequence of increasing the amp's dynamic.
Despite the fact that it was originally designed for bass guitars, it was more famous for its use with normal electric guitar and thus, when Fender recently reissued the 59 (5F6A) edition, it was categorized under guitar amplification instead.
Many famous amplifier manufacturers, including Marshall and Traynor, based their first batch of amplifiers upon the 5F6A Bassman, in examples such as Marshall's JTM45 (a clone of Bassman, using British-equivalent parts), and Traynor's YBA-1 (Head form of Bassman).
Other models
- Bassman 10 (1972-1982) - Silverface combo - four 10" speakers, 100 Watts/RMS (models produced after 1978 came with a 3-band EQ on the Bass channel and 135 Watts/RMS).
- Bassman 20 (1982-1983) - Blackface combo - one 15" speaker
- Bassman 50 (1972-1977) - Silverface piggyback head - two 15" speakers, 50 Watts/RMS - Same specs as the original silverface Bassman heads produced between 1968 and 1972, except for the addition of a tailless amp decal and an AC568 circuit.
- Bassman 70 (1977-1983) - Silverface piggyback head - Same as the Bassman 50, with 70 Watts/RMS and a master volume control.
- Bassman 100 (1972-1977) - Silverface piggyback head - four 12" speakers, 100 Watts/RMS, became the Bassman 135 in 1978.
- Bassman 135 (1978-1983) - Silverface piggyback head - Same as the Bassman 100, with 135 Watts/RMS and a 3-band EQ on the Bass channel.
- Super Bassman (1969-1971) - one speaker cabinet
- Super Bassman II (1969-1972) - two speaker cabinets
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