Re: And the next one! a GEC BT2147
"There's a bashed up example of the 12" version of the BT2147 upstairs." Hi John, It's a BT5144.
Hi D. Cassidy, A wreck project? Just check out that chassis metalwork.
The B36 is not a good valve and as suggested the American 12SN7GT is an excellent replacement. This valve is essentially two 6J5 low impedance triodes in the same bulb.
The characteristics of the 12AU7/ECC82 are very similar. Has 6.3volt 0.3amp heater Needs B9A valveholder. OK to use but a 21ohm resistor should be inserted in the heater chain.
DFWB.
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