Tube Amp Archive

So, almost everything electronics related has been ordered and received. The pcb is ordered but still on the way. Just in time for me to realize that I made one spacing slightly too large (7.5mm instead of 5mm for a silver mica… so nothing major). I went for a Hammond 1444-1783 aluminium chassis but...

Since I definitely want to try to stick to the smallest form fact I realistically can, and that I didn't like the fact that the heatskink was hugging the side of the case and bumping potentially into the power switches I went back to the drawing board. I am not sure it is a good idea but I wanted to...

Progress made according to the feedback above. I also increased the clearance from the "first" filter cap pins that will see 450V+ to the ground plate just in case (100mil, those who see less than 250V stay at 50mil). Looks a bit more like swiss cheese but should be less prone to accidents. That may...

Change log, as much for me as to thank the advisors: What's the clearance on the power tube pcb? I would increase it especially on anode pins and everything connected to them. Changed it to 100mil around the higher voltage parts. The Heater lines in the preamp are too narrow. Most texts on PCB desig...

Another thing to pay attention to is the thermal relief gap and thermal spoke width on the ground connections to the ground plane. Make sure the gap isn't too small or the spoke width too high or it's going to be difficult to solder components to the pcb. On my planes I was using 10mil/10mil for sp...

What's the clearance on the power tube pcb? I would increase it especially on anode pins and everything connected to them. I have everything at 100mil+ on the power tube PCB except on the ground plate which is set to is 50mil (which I just realized now). I think it's fine for most lines since it wi...

Made some progress and "finished" the PCB. Also known as I am not sure what I am doing and I did the best I could given my limited knowledge. Read a few PCB design basics articles and went for it. I paid attention to crossing, width, clearance, and obviously to grounding. Had some fun with rounding ...

Hey there, first post, first build ;) Actually first "and a half" as I finished a Rosamp SLO 30 kit last year, which ended up looking good inside and awesome outside , sounding great, and all of this on the first startup. Also I didn't die so bonus points right there. I guess training soldering on p...