You will be able to shape your tone significantly with just the right speaker(s) and tubes.You’ll need schematics to implement some of these mods. We usually start with explaining a mod from a functional perspective where we relate to components in the logical schematics diagram.This speaker has been used in the Hot Rod Deluxe, Blues Deluxe, Deluxe Reverb and the Twin Reverb, among others. It doesn’t have the deepest bass, however, and the highs can sometimes be “fizzy.” When the cream board tweeds were introduced, Fender chose the Jensen reissue (made in Italy) C12N.The C12N doesn’t sound much like vintage Jensens, and it can be shrill-sounding. Some people prefer the Special Design and don’t consider it an improvement.The chassis can also be found in the weird, plastic-cased Deco-Tone and in some Custom Shop amps with exotic wood cases such as bubinga.Other cabinet coverings include blond Tolex, dark brown Tolex with a wheat-colored grille (custom for a Canadian music store chain), and the Texas Red Tolex.In general we don’t recommend the mods on this page that increase the power and clean headroom unless you are playing your amp at gigs on medium/large stages and you need more sparkling clean notes or funky rythm chords to cut through.
It will not cut through the mix as easily as the stingin tone of the Deluxe Reverb.
All green board and all cream board Blues Juniors are identical electronically, despite what the salesman told you. Below is a table of revision dates and the changes made on those dates. Fender adopted a two-letter dating code in 1990, and the code can be found on the Quality Assurance label, inside the cabinet, sometimes located on the bottom, next to the reverb tank, sometimes on the side.
The codes are usually handwritten, and the letters can occasionally be hard to decipher. There is no reliable way to date 2003-2005 amps other than to ask Fender customer support to look up the date from the serial number, although you may find a date code on the speaker.
Fender introduced the Blues Junior in 1995, and has revised and updated it periodically since then.
Blues Junior history can be divided into two major categories: the early amps with green circuit boards and the later ones with cream-colored boards.The NOS Blues Junior is a current production, lacquered tweed amp with a Jensen reissue C12N speaker. There’s nothing limited about the edition; they built a bunch and when they ran out, they built another bunch.