Fender amplifier output transformer codes dating Free no registration pantyhose chat

04-Jan-2018 04:50

The next time you get into a Fender Bassman discussion you should narrow down exact which era, model and circuit you’re discussing. The tube charts are not very useful for determining the circuit model.

A lof of blackface Bassman amps with AA864 tube charts are actually AA165’s, and a lot of AA165 charts are glued into AB165 amps.

Fender amps can be dated by a rubber stamp on the Tube chart. What you are looking for is 2 letters which indicate the month and the year that the amp was manufactured.

Early Fender amps up to the 60's had "Blue-Cap" Jenson Speakers.

We will further focus mostly on the AB165 vs AA864.

Some things have not changed since the beginning; The Bassman never had reverb or tremolo.

1) Combining the AB165 and AA864 The schematics for this amp is explained below.

The red circles in the schematic below illustrates these changes.

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It was introduced in 1951, primarily targeted for bass guitar players and promoted as a bass amp for the Fender Precision Bass guitar, the first mass-produced electric bass guitar ever.During the different eras the Bassman amp came in many different shapes and configurations.Few other models experienced so many changes in terms of looks and tone.Remove the 0.1u F cap and 47KOhm resistor in the feedback loop and replace with a 820 ohm resistor (which you can make switchable by using the ground switch).

Personally we have experienced good results with a 1.5K which reduces the negative feedback and increases distortion and treble.

From right to left: – Switch the polarity of the two wires coming from the output transformer going to the speaker terminals.