- published: 21 Mar 2015
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The Ampeg SVT is a bass amplifier made by Ampeg. The SVT, which stands for Super Valve Technology, was designed by Bill Hughes and introduced in 1969. The SVT bass head produced 300 watts at a time when most amplifiers made less than 100. The SVT has been through many design changes over the years but is still in production today. The SVT head was initially coupled with a pair of sealed 8x10" speaker enclosures because one cabinet could not handle the power of the SVT. Later on Ampeg updated the speakers in the enclosures so that one cabinet was sufficient.
There are three types of original SVT amps. The first are the "blue line" SVTs. These are called that because of the engraved blue text and lines that surround the tone controls. Early 1969-70 "blue lines" used 6146B beam power vacuum tubes. The 6146B proved to be unstable in the high-voltage amp, and was switched to the more robust and reliable 6550 tube around mid-1970. The second version of a vintage SVT is what many call the "black line" SVT. The lines and text are black instead of blue, and like the later run "blue lines" use 6550 power tubes instead of 6146Bs. Later 70s models have the same features as the "black line" SVTs except the lines around the tone controls have rounded corners and curve into the tone controls. They also came with 3-prong power cables, and no polarity switch.
Sveriges Television AB (SVT, Swedish: [ˈsværjɛs tɛlɛvɪˈɧuːn]), Sweden's Television, is the Swedish national public TV broadcaster, funded by a television licence fee payable by all owners of television sets, and set by the Riksdag. The Swedish public broadcasting system is largely modeled after the system used in the United Kingdom, and Sveriges Television shares many traits with its British counterpart, the BBC.
SVT is a public limited company that can be described as a quasi-autonomous non-government organisation. Together with the other two public broadcasters, Sveriges Radio and Sveriges Utbildningsradio, it is owned by an independent foundation, Förvaltningsstiftelsen för Sveriges Radio AB, Sveriges Television AB och Sveriges Utbildningsradio AB, The foundation's board consists of 13 politicians, representing the political parties in the Riksdag and appointed by the Government. The foundation in turn appoints the members of the SVT board. SVTs regulatory framework is governed by Swedish law. Originally, SVT and Sveriges Radio were a joint company, but since 1979 they and Sveriges Utbildningsradio are sister companies sharing some joint services.
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The Beatles At 'Drop In'. Sveriges Television, Stockholm, Sweden (Wednesday 30th October 1963)