Bonjour de la France je vous regarde souvent et vous comprend très bien parceque vous parlez lentement et mon langage n est pas parfait bravo respect courage pour la suite Thierry
Plate voltage should be measured from plate to cathode and not to ground on cathode biased amps. It's a bit more precise for calculating plate dissipation. You are biased at about 92% which is fine for a cathode biased P-P.
I got one for ya Uncke Doug. ET AL.... I have a blackface PR AA964 that went "Pop".. and "all the bass and tone went away." It was the 1ohm 1watt cathode current indicator, that we have all been installing for a long time now. What's up with that? Never heard of it.
None of those dents and cracks are "Flaws" they are the "Character" of the instrument, remember plenty of fools buy new bashed-up instruments called "Reliced" by the marketing buffoons, keep em both, the woods they are made of are probably over 200 years old by now.
Great stuff. Show the viewers the " Ohms law Triangle" the VCR way? (Our Tutor would call it VIP triangle) makes it easy to remember and keeping electronics simple is the key to success. Thanks young Man. PS; let us hear the thing at-least, it's not everyday we get to even see a 53 Fender amp. 6L6s or 5881s?
Thanks much for this instructional video Nathan! I have an Ampeg Jet J-12-A that I am restoring, so this video helped me finally understand the whole process. That 5% that needs to get subtracted baffles me a bit ... but I think most of us just do not want to have the pwr tubes biased too cold or too hot. I'd like the amp to be somewhat biased closer to hot. But I am seriously thinking of splitting the cathodes in case the pwr tubes are not balanced. I had read that I would have to double the resistor value. Is that correct? So if 200 ohm is good for combined cathodes, I'd have to have 400 ohm resistors (plus 50uf/50V caps) per cathode. Thanks again!
Came her for the vibrolux. Left wanting to here that brownface concert in the background lol . This is the one of the sounding videos on RU-vid showcasing the vibrolux. Thank u
Dude- your vids on this Vibrolux inspired me to build a 5f11 and I have had it now for a couple years and it’s broken in and nice sounding a lot like this one. Great amps.
Great video. The proces is rather simple but often very difficult explained. This video is so simple and clear that everybody can understand this calculation bias proces. Chapeau good teacher!
Nice thing about player grade is the discount and you feel like you can take it out and play it. Sometimes this while vintage craze seems like it makes people afraid to use them or mod them.
Thanks for a nice comprehensive demo. It's nice to hear the wonderful cleans - so many focus on the hi gain sounds or mask the pure sound of the amp with pedals. Well done!
Excellent !!! I am looking forward to watching all of your videos. One question. How were you able to safely probe your amp with two hands while the power was on ?
To get power dissipation for each tube do you use plate voltage referred to ground or plate-cathode voltage both referred to ground? If you multiply plate voltage without subtracting cathode voltage aren’t you calculating power dissipation for both tube AND bias resistor?
What's the deal with them? Are they clean amps and don't really breakup like a Deluxe? I guess you would need a pedal to get them to overdrive like a Deluxe?
When you really want to record they have all of them in studios. Until then you can make all these cool sounds out of a 250$ amp and some effects, unless you really have the money to buy them all. Wich I would
