The 5D6 was a major departure from the earlier 5B6 Fender Bassman model.Designed by Freddie Tavares, longtime R&D man at Fender, Instead of the single 15" speaker, four 10" Jensen Alnico P10R speakers were used.Read More Not bound to any particular year or design era, reverently irreverent Custom Shop Postmodern guitars represent six decades of “Fender firsts” based simply on our own subjective view of what works best in a single instrument.Player friendly with enhanced sonic and ergonomic features, the Postmoderns open the door to an even wider range of individual musical expression and creativity, with elegantly crafted Stratocaster® and Telecaster® models, and a special combination Precision/Jazz Bass® model.These date codes will contain two letters of the alphabet which refer to the year and month of production, and may be interpreted as follows: In the absence of the rubber-stamped date codes, EIA numbers taken from the transformers may allow you to determine the date of production of your amp.
On most tubes, the leads are designed to plug into a tube socket for easy replacement.
Fender ceased production of 5B6 Bassman amplifiers during the spring of 1954.
During November 1954, Fender introduced the newly designed 5D6 Bassman amplifier offering four ten inch speakers and was designed utilizing two rectifier tubes.
5B6 Bassman amplifiers had two 6SC7 or 6SL7GT pre-amp tubes, two 5881 power tubes and a single 5U4G rectifier tube.
It was designed to generate 26 watts at an 8 ohm impedance load, and offered a cathode-based bias.