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File:Ampeg Portaflex B-15N (1967-1968).jpg

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Description

Ampeg Portaflex B-15N series   (B-15NC (1964-1965, 3-input) according to Premier Guitar, or possibly B-15N (1967-1968) ???)

The headamp's layout resembles B-15N series (B-15N in 1961, B-15NB with blue check cover in 1962-1963, B-15NC in 1964-1965, B-15NF in 1965-1967?) seen on articles on Premier Guitar,
however, cabinet's vessel thickness resembles B-15R (1997-2006), Heritage B-15 (2011), etc.

Reference

  • Zachary Fjestad (2010-08-17). Ampeg B-15N Portaflex. Premier Guitar. "Much like all of Ampeg’s amps, the B-15 underwent constant change, and the B-15 was replaced by the B-15N in 1961. In 1962, Ampeg updated the B-15N with a solid-state rectifier called the B-15NB and introduced their famous “blue check” vinyl covering to their entire amp line. Ampeg went back to a tube rectifier and changed to a printed circuit board in 1964 (B-15NC). This model lasted until mid 1965, when they introduced the B-15NF with fixed bias tubes and a single-baffle cabinet. ... Ampeg went through numerous ownership changes over the next two decades with Unimusic taking over in 1967, Magnavox in 1971, and MTI in 1980. / St. Louis Music bought Ampeg in 1985 and finally returned some stability and respect to the brand. The company also reissued the B-15N Portaflex with blue check covering in 1995. Ampeg was purchased by LOUD Technologies in 2005, and in 2010, they introduced the new Heritage Series that is produced in the US." (see Ampeg B-15-N image)
  • Jeff Bober (2009-08-19). "New Speaker Plug for an Ampeg B-15-N". Premier Guitar. (see Ampeg B-15 (S/N 0137XX, c.1965) image)
  • "Search Results: 27 results for '"AMPEG B-15"'". Premier Guitar. Retrieved on 2014-08-29.
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