jbrew73 wrote:did you ground the 5v center tap? it should not be grounded, just leave it floating.
macm75 wrote:You learned a lesson - don't crimp, always solder
I built the Z28 a couple months ago and I see the driver circuit is close. FWIW, my B+ for the EF86 is 285V, anode voltage is 75V, cathode voltage is 1.75V. B+ for the 12AX7 is 290V, anode voltages are 235/230V, cathode voltage common to the triode pair is 59V.
bkeck wrote: It sounds pretty good, but if i turn it above '3', the bottom end gets a very loud ugly distortion. i will be looking at the coupling caps or even try a different Ef86... any other ideas...or possible variations from the layout on found in this thread?
shicky wrote:Hi, I am trying to build mini z for my first tube amp project.
I have a few questions.
1. It was impossible for me to get 40uF 450V and 20uF 450V capacitors used in Rectifier (Bridge?) section.
I was able to get 47uF 450V and 22uF 450V.
Values didn't really make a huge difference in PSU Designer graph but I would like to make sure if I can use those.
2. What should I use for Rectifier Diodes, 1N4001?
3. What would be the fuse size? is 1A sufficient?
I would really appreciate your help.
- shicky -
G5120fx wrote:Is a Turret layout for the Mini Z out there?
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