golnie wrote:Hi, this is my first post. I have built the ST35 and now the eiclone. I am very happy with both. My question is how to wire the eiclone board for triode operation. I have wired a Dynaco ST70 for triode and it made a huge difference. I am using KT88's in my eiclone and I think triode would be a benefit. Any advise would be appreciated.
WES - What Ed said.
BTW, the Ike's are full of undocumented features. R25 and R26 are footprints for triode strapping resistors if you choose a more permanent solution. Even if just for a temporary test you can disconnect the UL taps, insulate them somehow, and 'surface mount' your 1K resistor on R25 & R26. 'Course it's probably just easier to 'surface mount' on the socket pads 3 & 4. Easily reversible if you miss the power.
Also, R44 and R45 are jumpered screen resistors. To use these, cut the trace shorting them and drop in a screen resistor - once again, a 1K, 2W one would probably work well. That said, I've yet to do any tests with screen resistors. It would be interesting to see if any stability or performance is gained at high output. My guess is better stability and worse distortion. I hate to tinker with ultralinear.
Shannon