runeight
Headphone CouncilJoined: Mar. 8, 2002
Locale: Austin, Texas
Total Posts: 1879 |  posted 11-15-2006 10:33 AM CST (US)   |  | 
Here's another important mod to the CKIII. AMB and I have been chatting about this amp and have realized that the input BJTs can be replaced by JFETs with just a few resistor changes. The JFETs will drop right into the BJT pads with the same package orientation. The PCB won't change at all.This substitution has no real downside to it. The upside is that it gives the amp a very high input impedance. And so we are going to make this the standard configuration. Schematics are attached. Edit: there was an error on the voltages for C3, C4, C12, C13. I've replaced the schematics with ones showing the correct voltages. [Edited by runeight on 11-16-2006 at 12:52 AM.]
Attachment: C2297.gif,C2298.gif |
