Fender amp dating code
On most tubes, the leads are designed to plug into a tube socket for easy replacement.
The simplest vacuum tubes resemble incandescent light bulbs in that they have a filament sealed in a glass envelope which has been evacuated of all air.
You also mentioned that you’re looking for a speaker option that decreases the overall volume of your amp.
On the inside of your vintage Fender amplifier there is a paper chart with the tube locations for that particular model. On the tube chart there will be a rubber ink stamp with two letters.
You should be able to find a number stamped somewhere on the speaker’s frame.
In a BF Vibrolux Reverbs you could have either Jensen, CTS or Oxford, the BF Super Reverbs had Jensen, CTS, Oxford or sometimes JBL, the BF Pro Reverb had Jensen, Oxford or Utah, .
In the silverface era Eminence, Oxford, Utah and Rola were more often used and Jensen was phased out.
S.) and high power RF transmitters, as a display device in television sets and in microwave ovens.
Vacuum tubes, or thermionic valves, are arrangements of electrodes in a vacuum within an insulating, temperature-resistant envelope.