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I got few inspirations recently that made me to dedicate today for building another DH MF for second amp. It is end of the day and the conversion of the second amp is done, including the PS, marking and drilling the holes, driver stage and the DH stage – everything. In fact the amp was working perfectly fine right after assembly and each voltage and current was right spot on.

I will keep it for another day or two open and I am experimenting with removing the voltage divider from input filter and then the saga with Melquiades 2009 modification will be over. The final decision about the output transformer I made is that the transformer I need 25:1. No taps, no re-mapable coils, no loading change. The strait coils 25:1 and it will be it. Perhaps there is a way to do it without loosing anything but I am not in business to write the audio theory and make more experiments. The 25:1 will be it. It might be a bit rough for 2A3 (remember, I load to 16R) but I can shunt my LPAD with extra résistance and it shall not have any negative effect, not like shunting the S2 driver…

The friends of mine who observe this project advised me a kinky techniques how to make my Nickel core transformer to sound much “expedited” then it is, so the VERY ideal 25:1 with additional “expediting” will be plenty to suck all HF out of my DHT.

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