+1 Jetter!
And, it seems Ralph did try to help you. Though maybe what you are asking is proprietary.
B
And, it seems Ralph did try to help you. Though maybe what you are asking is proprietary.
B
We simply don’t have schematics that look at that good for public consumption. As some of you may know, the UV-1 is based on the mods/updates we would do to a Dynaco PAS-3. So the phono stage is very similar to that of the PAS-3. The differences are as I explained to Will: 1) we don’t employ the cathode to cathode feedback resistor 2) 12AT7s are used instead of 12AX7s 3) a cathode bypass cap is employed on the 2nd stage of gain 4) only one output coupling cap is used and the feedback is connected to the output of that. A 10K resistor is then in series with the output of the circuit. So if you can find a PAS-3 circuit online and apply these changes, then you can build this circuit. |
Here is the PAS-3, all over the internet.... the v5 and v6 boards are both on this pdf http://www.curcioaudio.com/pas_mnl.pdf |
@autospec Well, For Myself, I'm a speaker guy and can follow anything that has to do with a speaker, follow direction draw schematics, make changes, repairs etc... Amps, pre's, not so much, but I can look at and follow a schematic and make changes as needed. If Ralph told me to change the cathode bypass cap.... I'd say Huh, well maybe not, I understand the cathode for tubes.... My point is or question is: Do you understand what Ralph is saying or are you more like me and need a schematic to follow along? I can tell you that after 8 or 9 years on this forum, I've never seen anyone more helpful than Ralph Karsten. |