"The Natural ****** "

I reverse engineered a couple of marshals. Triumph of overrunning
components and cost reduction over correct design.

The marshal 100W valve is based on an overrun Mullard 50W design,


** Nonsense.

The first Marshalls were clones of the Fender Bassman of 1959, the 5F6-A
schematic.

Subsequent models all followed a very similar pattern.


Well just look at the Mullard 50W circuit with 4xEL34 and compare and
contrast.

** No relevance to Marshall whatever.


American tube amps were all based on different valves entirely..beam
tetrodes mainly, not pentodes.


** All the early 60s Marshalls used beam tubes, 5881s and KT66s.

Marshall Majors used 4 x KT88s.

USA models used mainly 6550s.

EL34s were later substituted with a bias change and little else, as an a
economy measure.

Read the Wiki & check out the schems.

http://en.wikipedia.org/wiki/Marshall_Amplification

http://www.drtube.com/marshall.htm

You are totally WRONG.




....... Phil