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Dating new fender amps

Our Buyer’s guide to vintage Fender amps explains in detail how you can date your amp by looking at serial numbers, tube charts, transformer codes, speaker codes, Fender logo, etc.

Lots of different speakers were used in the blackface and silverface era Fender amps.

An alternating current in one winding creates a time-varying magnetic flux in the core, which induces a voltage in the other windings.

The distortion and speaker-damping characteristics of a tube amp with an output transformer matched to the speaker load is hard to replicate with solid-state devices.

Tube amps are particularly popular with serious musicians.

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.

This is useful in converting the voltage from a wall outlet, typically 120 or 240 volts, into a higher voltage required by tubes in tube amps .

typically 400V or more, and a lower voltage for the tube filament, typically 6.3 or 12.6V. Dating Marshall Amps In 1969 Marshall introduced a date coding system.You may compare these with your own speakers to determine what you have. For most purposes, the vacuum tube has been replaced by the much smaller and less expensive transistor, either as a discrete device or in an integrated circuit.A third element called a "control grid" can be added to the design which provides the ability to amplify a signal.Other configurations are also possible including the Pentode, a tube with 5 active elements providing an additional amplification factor.Some of the older Marshall amps have an inspection sticker on the top of the chassis which usually has the day, month and year the amp was actually made or inspected. Note, "A" Date Code ran for 18 months (July 1969 to December 1970) so the "B" date Code was never used and has been omitted. The serial number is generally located on the back of the chassis but from 79 to 80 it was on the front panel.From 1969 to 1983 the date code was after the serial number. and Canadian English) or (thermionic) valve (outside North America) is a device generally used to amplify, or otherwise modify, a signal by controlling the movement of electrons in an evacuated space.However, tubes are still used in several specialized applications such as guitar amplifiers (also called a valve amp outside the U.Many musicians prefer to play vintage Fender, Marshall and Gibson amps.Replacement tubes and transformers are readily available for these amps however there are many boutique amp manufacturers making new tube amps with a vintage sound.

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