They also have hand-wired tube sockets and other parts for added strength.
Tonal Characteristics: Bright, scooped midrange that is known as the "Blackface" sound, pronounced "Wine Glass" highs from the Jensen speakers and a slightly more polite power amp for crystal cleans that can also be cranked for great overdriven tones.
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This 45W, all-tube combo with 4 x 10" Jensen speakers, tube reverb, and vibrato has long been considered one of the best amps to "crank up" for unmiked club gigs or on the concert stage. They do have PCBs (Printed Curcuit Boards), as opposed to the original's "hand-wired" circuitry, but the components (capacitors and resistors) are the same values as amps from that period.
The main focus of this article will be speakers found in Fender amps, but before we get into that topic let’s go over a few other areas first.
Early silver face amps: Part 2 went into this topic in some detail, but since that article was printed, I have been asked a of questions about this subject.
The 6 digit code indicates what manufacturer made the speaker and when it was made. Here is a list of some of the speaker manufacturers and their EIA codes: So, the speaker in the image above would have been made by Jensen (220) during the 27th week of 1951 or 1961.
The year is confusing because it is only a single digit.