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Interesting that the filaments for V1, V2, V3 and V4 are taken off the 52 volt DC bias supply!

Oops!    Should read anode voltage lower with big transformer

Hi Bought myself the Little Bear P5 line amp.  Also found the supplied transformer totally underrated.  Below are some measured voltages, with the supplied transformer and with a higher rated transformer. Have also replaced the supplied Chinese 6J1 tubes with Mullard 6ak5 valves' Personally I...

Great speakers.  Transmission line enclosures that came out in the 70's.  The TSL80 was considered by many to be the best speaker available at the time.  I have a pair of custom build enclosures dimensioned exactly as the TSL80.  As you say, unreal base, if it is there, and quite happily powered...