Fender amplifier output transformer codes dating
However, tubes are still used in several specialized applications such as guitar amplifiers (also called a valve amp outside the U.
S.) and high power RF transmitters, as a display device in television sets and in microwave ovens.
The silverface Bandmaster Reverb is a typical ab763 amp and shares basic circuit design with the Super Reverb, Deluxe Reverb, Twin Reverb, Vibrolux Reverb, Pro Reverb and Twin Reverb.
The main differences between these amps are transformer size, filter caps size and output/speaker impedance.
The 70W model from 1978 with master volume and push/pull boost had a huge power transformer and big filter caps.
It reminds us more of a classic 80w Twin Reverb than a Bandmaster Reverb, and it shared its circuit design with the Pro Reverb and Super Reverb at that time.
Fender has used only a handful of different speaker types over the years.
This app would be better off in your email and add as a friend or someone else dating fender vt bassman cabinet to date.
You should be able to find a number stamped somewhere on the speaker’s frame.
The format may look like this: 220 637 Here the number 220 designates the speaker as a Jensen, and 637 indicates a production date of the 37th week of 1956 or 1966.
(I’ve also included a few others brands you might encounter as aftermarket installations.) This should help you identify your speaker.
You also mentioned that you’re looking for a speaker option that decreases the overall volume of your amp.