Input Transformer Question (Bellari MP110)
I've been working on modding a Bellari MP110 to try to start learning more about how gear works, how to tweak it, etc. I have replaced the opamps as well as the pots but I wanted to change the input transformer until I noticed something. The two input wires for the transformer were removed, and soldered over and only the four output wires were actually soldered to the PCB. I bought a Jensen 115K-E to replace it, but I'm not sure how to go about wiring it as the reduction from 6 wires to 4 is confusing. The PCB is labeled colors Black Red Yellow White, which are all coming from what appears to be the output of the xformer. On the Jensen, however, the four output colors are Black, ORANGE, Yellow, White, with the Red wire coming out of the input side along with a brown wire (soldered shut on the stock xformer). If the input stage is wired shut then how is the transformer actually doing anything? Is the red wire from the input side meant to be soldered to the PCB and not the orange wire? If I do cut and seal the input wires, would I join them together, or separate their conductivity?
Hopefully someone can answer this. I've done a lot of electrical studies from a theoretical standpoint but I haven't done much hands on practical work if at all. I'm not stupid I just need a bit of guidance if someone can help. Thanks!