till said:I´m not very experienced and i built ZEN variation 2 and bride of ZEN handwired.
build SOZ handwired! you won´t need much more that the Mosfets , some wire, and a very very big heatsink to mount everything on it.
Erik Johansson said:Also, how powerful must the transformer be for 2x10W or 2x15W output and what voltage should it be for those outputs?
Minimum Safe Ratings are as follows
Assuming standard transformer --> bridge --> caps bank type power supply.
2x10W = 900VA @ 2 x 22V
2x15W = 1.3kVa @ 2 x 27V
Erik Johansson said:
900VA for 10W? Oh I said 2x10W... does that mean you meant a single transformer for both channels? Or is it THAT power hungry? I think I saw someone in the gallery having built a 2x5W SOZ using a single 250VA 2x12V transformer and he was planning on building a 2x15W version using dual 600VA 2x25V transformers.
What kind of power can I get using a 600VA transformer? That´s the largest ones I can source locally and they come in 2x12V, 2x18V and 2x24V versions.
for 600VA you can get about 13.5W mono using 2 x 24V.
AudioFreak said:To calculate the transformer rating, look at the total power draw of the circuit then divide by 0.62 to get minimum total VA rating. Those caps should be fine I think but you'll need more than 10 of them for a stereo pair.
swede said:I'm currently building an Aleph30, which will do good for me. I also buy my stuff mainly in Gothenburg.
I usually buy my stuff at Tema Elektronik, but they are closed for the next couple of weeks (the guy owning the store is on vacation). He has reasonable prices for most of the stuff you need; transformers, caps and rectifiers. Usually he has all transistors as well.
Where in Gothenburg do you usually buy your stuff? Elfa (=expensive but good)?