andrew Ivimey wrote:I told the butler to take that one to the jumble sale!
Thats funny, I bought it from the back of Ivimey Manor a few years back. Swithers was loading up a Transit with some light bulbs too. i saw this painting of one of Pauls rellies and thought 'I'll have that, gotta be worf a punt innit'.
E55L has a gm of 45 but the grid is so close to the cathode that a lot of them have a manufacturing defect and don"t pass the tests. Maybe KT 33C is a more realistic option with its gm of 10 and more rugged looking construction. It also looks like a proper valve while E55L has a distinctly effeminate appearance.
With regard to the step up transformer, I have used a 3:1 step up on a regular basis but with surprisingly weedy results I have been informed that in order to double the volume one has to increase the power 10x, yet another illustration of Sod"s law, as if any were needed. Steptoe.
Oops. I don"t know how the above comment got here. It is completely out of context and should be ignored. However,while I'm here perhaps I could add some thoughts as to why we collect valves. It is not a question of whether, but of when, the Earth will be struck by a massive solar storm,resulting in the destruction of all electronic equipment that relies on solid state technology. Yea verily, the doubters and mockers shall then weep and wail and run about like headless chickens while we, the chosen few, continue to enjoy listening to our music like nothing has happened, while our vast stores of old valves will suddenly be worth their weight in gold. Steptoe.