Quite awhile ago, I bought plate transformers to HV for paralleled 6DJ8, 6922, tubes at a reasonable price, (I could afford them). They are frame grid tubes, like the 8417s. I have PPP Bogen amps sitting on the shelf for some time. Do you think they would make good driver tubes? I've had 8417 amps before and liked them, and amps with 6922, or 6DJ8s, but never in the same amps. Maybe drive a paralleled tube into the cathode of another 6922, using the 2nd half of that tube as a splitter. I know, "try it and see if you like it." Good advice! However, I retired and really went to work on our rentals, and audio time I THOUGHT I'd have, vanished. I suspect I won't be soldering at 130 years of age, so I am grateful for any timesavers. Anyway, I know audio constructors have strong opinions on this preamp tube. Some say it's not designed to be an audio tube, and unsuitable. Some like like this tube, but others do not. If you wouldn't mind sharing a VERY few words from experience, I would genuinely appreciate it! Thanks in advance for your time, and good luck with your projects!
They are reasonably well suited for lower voltage circuits like linestage preamps and phono preamps. When you change gears and work on big power amps with something like 8417 finals, there's a lot more voltage available and you'd be better off with a tube like the 5670 that is a little better suited for that duty.
Thank's
Thank you for your advice! I had Webster Racine Wisc.), PP 8417s with 6AN8As. {Factory burned down and no paper work}. 🙁 Rather pleasant with mild tweaks. I appreciate your information!
Thank you for your advice! I had Webster Racine Wisc.), PP 8417s with 6AN8As. {Factory burned down and no paper work}. 🙁 Rather pleasant with mild tweaks. I appreciate your information!