drpat said:
The newer pio caps that I tried (audionote, jensen, etc.) all sounded faster and more detailed than the older ones. Sometimes you'll want that, and sometimes you won't. I've done a lot of experimenting with those old Russian PIO caps, and wouldn't hesitate to use them on the Pultec circuit that you're planning to build. Especially the green ones on the low boost bands.
Thank you, Dr Pat.
I have been fishing for just such an informed opinion!
After spending much of yesterday researching the subject,
I have concluded that CCCP PIO caps are (more than likely)
If you want check different caps in a low boost circuit, go here:
http://www.groupdiy.com/index.php?topic=11342
It's not the exact pultec low boost circuit but the principle is roughly the same. It takes about 5 minutes to throw together on a board and makes A/B testing quick, clear, and easy. You could go one step further and build just the pultec low boost section though it takes more time. Either way they're both peaking curves that will give you the info you need.(and it's a lot more fun than wading through a maze of literature and specs)
a great deal and will be very welcome in my Pultecs.