D: Difference between revisions

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6 bytes removed ,  1 March 2021
m
Early production not "some production"
(Remove picture of Type CA plugin misnamed as Type D.)
m (Early production not "some production")
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==Internals==
==Internals==
Some production runs used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
Early production used a pair of [[5814]] tubes at the input while late used [[12AU7]]'s.
These two tube types have different heater currents, and because the heaters are
These two tube types have different heater currents, and because the heaters are
series-wired, you cannot switch from one type to the other without circuit modification.
series-wired, you cannot switch from one type to the other without circuit modification.
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