Raquel,
Here's the web page of someone that has actually tested
the tubes they're dealing with:
http://jcverdiervalvevinyl.online.fr/Kinky300/300Binfo.html
The quality of the tubes varies - which is true of
every manufactured component. However, it is especially
true of hand-assembled devices like vacuum tubes.
However, one can see that even in the tubes labeled "perfect",
there is a degree of non-linearity. The plate characteristics
curves are not perfectly straight - and they are not
perfectly spaced.
The author is correct that they are "perfect" - but
perfection only goes so far with a hand-assembled
1935 designed electronic device.
The 300B is not bad for a tube designed in 1935.
In fact, it's a rather impressive tube for a
device that did not benefit from modern computer
modelling, and modern electronics manufacturing
techniques.
However, one can produce devices with better linearity.
Dr. Gregory Greenman
Physicist
Here's the web page of someone that has actually tested
the tubes they're dealing with:
http://jcverdiervalvevinyl.online.fr/Kinky300/300Binfo.html
The quality of the tubes varies - which is true of
every manufactured component. However, it is especially
true of hand-assembled devices like vacuum tubes.
However, one can see that even in the tubes labeled "perfect",
there is a degree of non-linearity. The plate characteristics
curves are not perfectly straight - and they are not
perfectly spaced.
The author is correct that they are "perfect" - but
perfection only goes so far with a hand-assembled
1935 designed electronic device.
The 300B is not bad for a tube designed in 1935.
In fact, it's a rather impressive tube for a
device that did not benefit from modern computer
modelling, and modern electronics manufacturing
techniques.
However, one can produce devices with better linearity.
Dr. Gregory Greenman
Physicist

