Dating fender bassman silverface
Later on, production was moved to Ensenada, Baja California, and the model name was altered to "59 Bassman LTD".
The LTD came equipped with the original 5AR4 rectifier tube, and four Jensen P10R reissue alnico speakers, which was period correct for the original amp.
Initially intended to amplify bass guitars, the 5B6 Bassman was used by musicians for other instrument amplification, including the electric guitar, harmonica, and pedal steel guitars.
Besides being a popular and important amplifier in its own right, the Bassman also became the foundation on which Marshall and other companies built their high-gain tube amplifiers.
Several Bassman models were progressively influenced by the 5D6 through the last Fender Tweed 5F6-A Bassman's circuit design.
The 5F6-A Bassman's design was directly copied by Marshall Amplifiers within their JTM-45 amplifier during the early 1960s. The first series of the reissue were made at the Corona, California facility, and came equipped with four Eminence-made 10" blue frame Al Ni Co speakers, and a solid state rectifier unit.
The P10Q Jensen speakers are more able to manage stronger electrical input power and generate better "clean" output sounds than previous installed P10R Jensen speakers.
During early 1960, Fender began producing the 5F6-A Bassman with Jensen P10Q speakers.The 6G6 model was covered in rough Blonde colored Tolex material with Oxblood colored grill cloth.It had a single GZ34 rectifier, two 5881/6L6GC power tubes and four 12AX7 preamp tubes.In late 1960, Fender introduced a completely redesigned model 6G6 Bassman Amp, using the "piggy-back" design, in which the amplifier chassis is housed in a small cabinet, attached by metal clips to a larger separate speaker enclosure.
The early models were called "Brownface" because of the dark brown color used on the control panel.Many professional music industry analysts have heralded the 1950s Fender 4×10 Bassman amps as the greatest guitar amp ever.