Chimike Posted November 8 Share Posted November 8 Hoping I can get some info on my B15 mains transformer. Connections all seem correct, and agree with circuit diag under amp. Tube rectified, non-pcb version. Amp is run from a step down transformer, and is working fine,( just need to lower the hum level a tad ) However, there appears to be two additional leads attached to the transformer , blue and blue/white , taped off, and tucked away. Can anyone throw light on why they are there ? I don't want to guess ! Thanks, Mike. Quote Link to comment Share on other sites More sharing options...
Aidan63 Posted November 9 Share Posted November 9 possibly taps for different impedance speaker connections, not required in this specific application, so not connected - the transformers maybe used in different applications not all of which need all the wires to be connected I watch a lot of Psionic Audio (US amp tech) on YT and he'd definitely be able to answer the Q; I don't know if any of the knowledgeable old school valve amp technicians in the UK are on this forum and would interact, check the recommendations in repairs and maybe contact someone who works on these Quote Link to comment Share on other sites More sharing options...
Chimike Posted November 9 Author Share Posted November 9 (edited) Thanks, but just to confirm, it's the power transformer, not the output transformer I was referring to. , although I do realise it may be a replacement, but def a proper, potted, B15 replacement, if so. I'll check out Psionic Audio JIC. Edited November 9 by Chimike spelling. 1 Quote Link to comment Share on other sites More sharing options...
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