apart from needing to connect the primaries and secondaries in series, is this the same for 230volts?
Same guide for 230V, except connect the red and black wires in series.
also, where it says to connect the wires together, is that just twisting them and soldering to the same point? then with a heatsink slipped over the twisted wires?
Twist them both, solder, tape with electrical tape, then apply heatSHRINK if you have any.
what do i do about the ground? solder a wire to a bolt, which is then drilled into the chasis?
Solder the wire to a terminal (lug nut terminal I think they're called), then put the terminal in between the case and bolt.
similarly what do i do about a ground for the XLR? leave that pin? the cable only has two wires
What cable? The two inner conductors in the cable goes to pins 2 and 3. The shield (or ground wire) goes to pin 1.
with two channels, do i connect the outs of pre one to the outs of pre two and then run the outs of pre two to the power supply, with two sets of wires connected to the solder points on pre two?
Please restate question. I do not follow.
also, what is RGA and RGB (i think?) for? they are empty right now
You can safely ignore them. They're meant if you want to use a reverse log potentiometer instead of the 12-step selector switch.
sorry for all the questions, i tried to get them all in one go as im wiring it myself now
Hey no problem. Good questions..