This was a carefully designed test, and you've successfully passed and not passed at the same time. 
Ok, not really...
This particular schematic is correct, however the lower devices are mis-labeled. Look at the MOSFET symbols, and you can see they are drawn as P-channel. The labels all say 240, but they should be 9240's
Ok, not really...
This particular schematic is correct, however the lower devices are mis-labeled. Look at the MOSFET symbols, and you can see they are drawn as P-channel. The labels all say 240, but they should be 9240's
Hello 6L6
Did you ever built a Ba3 with a no feedback gain stage(the one from this build guide)with a single ended output stage? (the one from here) and if so there is anything else needed to be done differently from this guide (like different size transformer or matched IRPF240's or anything else i can not thing of)?
Did you ever built a Ba3 with a no feedback gain stage(the one from this build guide)with a single ended output stage? (the one from here) and if so there is anything else needed to be done differently from this guide (like different size transformer or matched IRPF240's or anything else i can not thing of)?
Just use the bias boards and point to point the outputs. Or do mono blocks, BBA3 is what I have in mind......A single case might not handle that many without reduced bias? Not sure about that but I will go mono block BBA3 when I do it, already have parts, and the two of the standard Deluxe 5 will do, which I do not have yet. $$$$.
Russellc
Russellc
Yes Jim. You are correct. Running 3 pairs at 500mA bias each will be better than running 6 pairs at 250mA bias each. Would be nice though to have the current for one day when I get my Maggies. But to run 6 pairs at 500mA bias each will require beeeeg heatsinks. But right now my speakers don't require that welder type current.
