Tube Amplifier Tone Stacks: Part 2 

You're quite welcome, Cory. It's great to hear that the videos are helpful and appreciated :)

His videos actually make it more possible to comprehend technical books on amps and circuits. They’re great. A library for anyone interested.

For calculation of the frequenzy it's better to use the exponential form with a base of 10.

Thanks, Royce :)

You're welcome, Johan :)

@@UncleDoug Thank u so much for taking the time to teach us the technical aspects, the formulas, and where to look for further information on a subject I can't get enough of.

@@aaronowens1627 Go to the Valve Wizard's internet site, Aaron. He is the guru.

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Johan and Doug in the same circle. Nice!

Thanks so much for your very kind comments, Kevin. Best of luck with your first (of many) amp project.

You're welcome, BSM :)

You're quite welcome, Alek. Rusty and I are glad to hear that the video is helpful. Thanks for watching and commenting :)

You're welcome, Keith. Glad you enjoy the videos.

Glad you enjoy our little productions, Dan :)

+Ogre Badogre You're welcome, OB. We will :)

Thanks so much, Stephane. Glad you enjoyed the video :)

Thanks, BT. I thought the hand acting reached it greatest heights during the back-lit computer scenes.....the stark delineation of black and white tones really added to the drama and suspense. I'm thinking Hand Emmy :))

You're welcome, JT :)

Thanks, Ken. I try to teach in a manner that makes sense to me. If it doesn't, then it won't make sense to anyone.

That's great to hear, Jeff. You're quite welcome.....thanks for watching !!!

Thanks so much, ST. I am very flattered that an EE would find my videos helpful :) Rusty and I really appreciate your interest and kind words of support.

I'm really glad to hear that, Wesley. Please watch our many other videos for similar revelations :)

You're quite welcome, CoT. Glad you enjoyed it :)

+gerrabath You're welcome, GB, and thanks for the very kind comments. Rusty and I wish you the best :)

That's great news, Mick. You're welcome.

Wow.....thanks, Chase. You're welcome :)

Thanks so much, Colin. It's great to hear that the video was understandable and helpful. I never know when I post a video whether it's going to be effective or not, but nice comments like yours always put Rusty and me back into "video production" mode. We wish you the best.........

That's great to hear, Sean. Thanks for watching :)

You're welcome, MM. Thanks for the nice comments.

That's great to hear, John. Thanks :)

You're quite welcome, John. It's great to hear that the videos are helpful and appreciated. I think you'll find the Duncan Tone Calculator to be a very useful tool. Thanks for watching :)

+Martin Burton You're welcome, Martin. Rusty and I are glad the videos are helpful and enjoyable.

Glad you liked it, Dennis. Thanks !!!

You're welcome, Bill. It's great to hear that you're putting the info in the video to good, practical use. Best of luck with your experimentation.

You're quite welcome, Rob. It's great to hear that the video was helpful :)

You're welcome, Ideal :)

You're welcome, John :)

You're welcome, Tim :)

Thanks, Mod, and welcome aboard. Like you, I got off to a late start on guitar amps, but I really think we become better students as we get older. There are fewer distractions and the information seems to have more value.

Thanks, ER. I'm glad it was helpful.

Thanks so much, Louis :) We're glad to hear that the videos were helpful and informative ^. .^

Although, your assistant seems to be doggin' the work a bit.

Rusty is just playing a role, Louis, and only appears to be lazy and indifferent while the video camera is on. Once it's off, he's a real "dynamo"......I swear ;)

You're welcome, Steven......glad you enjoyed it :)

@@UncleDoug Thanks for this very informative video Uncle Doug. Only thing missing is the effect of the imput impedance. When you change the Marshall impedance from 1.3k to the Fender's 38k the difference in gain reduces to around 2dB rather than 6dB. I changed C1 to 400pF, C2 to 200nF, R3 pot to 500k, C3 to 50nF, R4 to 10k and a small boost from the treble pot to match them. 2dB would still be a useful gain though. Thanks again!

@@frogman6641 Thanks for your analysis, JB.

You are too kind, Marcelo. Thanks so much :)

You're very welcome, Joao. Glad you enjoyed the video.

That's great to hear, Jason. Best of luck with your continued acquisition of knowledge.

Thanks, Will. We're glad the videos are helpful :)

You're welcome, Leo. Glad you survived it :)

You're welcome, Larry.....glad you enjoyed it.

You're welcome, Prof. X :)

You're welcome, ZS.

You're welcome, Rene :)

Thanks, L. I'm glad the video was clear and helpful.

Thanks, Pisola......and our 100th video will be posted today, so you're in for a viewing extravaganza :)))

Very cool ! I look forward it and I am sure I will be viewing it more than once.

Thanks so much, ReF. Best of luck with your self-education.

Thanks for your very nice comments and your knowledgeable input, FC. We really appreciate them both.

You're quite welcome, Charles. The best possible result of any instructional presentation occurs when someone actually puts it to practical use. Congratulations on your successful tone modification :)

You're welcome, Oscar :)

That's great to hear, Mark. You're quite welcome.

You're welcome, SC.......glad the videos were helpful.

It sounds like you're making some great progress, William. Keep up the good work :)

@@UncleDoug Definitely,thanx! I write down the notes you show as writing notes seem to cement info in my mind better than just having them on video or audio. I do go back to the tutorials to see how much has consolidated in my memory and what I may need to remediate. I just wish I could implement my new found knowledge more often! After a 5e3 kit (great fun but more of a paint by numbers situation than a conversion,mod,or build) I’m jumping into another organ conversion. Those are REALLY where learning occurs. And fun!

You're welcome, SG. We're glad the video was informative.

Thanks, Jordan. The knowledge can be used in many ways.....all up to you :)

Thanks, Tom. I'm glad the videos are helpful :)

You're welcome, James.

Thanks so much, Travis. It's great to hear that the videos are effective......and appreciated :)

Thanks so much, Sarah. We appreciate your kind comments.

You're welcome, Stefan, and you bring up a good point. Why must so many topics be cloaked in confusing language? This has always been a concern of mine, too, and in any field of interest that I become involved, I try to boil all the jibberish down to easy assimilated facts. This was my SOP for teaching math and science to school students.....and also for our YT channel. Thanks for acknowledging that our efforts have not gone unappreciated.

Thank you, Doug for your most thoughtful reply on my comment. I´m always impressed by guys like you and my dad. My dad he started out in the early fifties with no particular skills in math or foreign languages, yet did he managed to figure out for instans all of the topics in your videos( I recognize all of the parts in the schematics) and when I grew up during the 70´s our home in the south of Sweden was ful of technical magazines from USA, Great Britain and Germany along with a never ending stream of ongoing amplifier and speaker projects. His university was trial and error, technical magazines and listening to the AM radio served as education in foreign languages. I think to my self , If he could do it with that minimum background in education then I could do it too. The differens is he was twelve when he started out and I´m nearly fifty now so I don´t have the same amount of time to conquer these skills (if I ever will). When he died a couple of years ago I took care of his workshop and all of the literature because I thought that this is a whole era of knowledge that is worth preserving and I did n´t want all of the equipment end up in the dumpster. I have always shared this interest of sound and music in both reproduction(hifi) and production (guitar amplifiers for instance) though I´ve mostly been on musician and listening side. I´m crazy about all of the old vintage stuff, (radio- gramophones , all of the early radios to the big radio consoles all the way to early hifi and the invention of stereo ). They are from an era when home entertainment equipment was ment to be part of a beautiful home. And they are built in such quality that make me cry when I see what´s on the market today, affordable for the common man. My goal is to be able to maintain and restore equipment like this and maybe even build some for my own use. But because I don´t have that much time and I don´t want to blow up dads workshop into smoke (I tried to fix a turntable a year ago that just ended up in a lot of hum-so I said to myself- well, maybe I should get a grip about this in reading some electronics) , I´m thinking that the key of a good starting point for me is to get the knowledge first, about how it all works to have better control, and in the meantime practice soldering on things that doesn´t do any harm involving the fire brigade and damaging priceless vintage gear. All of this is again one of the reasons why I find these videos priceless.. stefan

Thanks so much, Murray. I completely agree with your final statements :)

Thanks for sharing this great story with us, t1. Based on their one big hit, which I loved, I always hoped for more from this talented bunch. Having attended a few ear-damaging concerts in my day, I now wish that many early bands focused more on their musical skills than their volume knobs.....especially when the singing and lyrics were as good as they were with this group.

You're welcome, K40.....we're glad the video was helpful :)

You're welcome, Robert. Glad you liked it :)

Thanks, Stefan. I'm glad the video was helpful :)

Thanks, D.

Thanks, Marstyn. Rusty and I are glad to hear that the video was helpful :)

You're welcome, Gear, and thanks for the very kind words. You are quite perceptive about Rusty. His screen persona is one of feigned indifference, but in reality, he is the creative force behind all the videos. I am but his humble assistant.....his "Igor", if you will :)

: )

You're welcome, BH. I'm glad the video was helpful :)

You're welcome, Brad. It's good to hear that the videos were helpful. I taught math for many years and just know that some people, probably due to bad experiences (and teachers) in school, have a mental block when it comes to math. I never want to discourage, bore, or alienate my viewers.....so I get a little apprehensive when presenting complex topics and math formulas. Thanks for the reassurance.

Thanks, HGO.

You're welcome, Marco. Likewise :)

You're welcome, Bio. It's my pleasure :)

Glad you enjoy the videos, Brian.

You're welcome, Charris. The TSC is a wonderful tool. I think you will really come to appreciate its utility. Good luck !!

That's good to hear, Tim.

You're welcome, Mike :)

Thanks so much for your support, Ian. I agree that posting a negative opinion should be accompanied by an explanation. Who knows? They may have a valid criticism that could result in overall improvement of the videos. But, without this, I must consider the naysayers to be a bunch of mentally deficient adolescents who get off desecrating the work of adults.

You're welcome, Mitchell :)

Thanks, Larry. Glad the video was helpful :)

You're welcome, CD. We're glad you liked the video :) ^. .^

Thanks, Bill.

Thanks, BE. Yes, it is :)

You're welcome, Shane. Thanks !!

You're welcome, Dave. Thanks for your nice comments :)

Jon Mulrine Thanks, Jon. Glad you liked it :)

You're welcome, SS. I'm glad the video will be helpful. I'm sorry to say that Rusty passed away over a year ago. He is greatly missed.

Oh no. I'm so sorry. I lost my best friend, my German Shepherd of 17 years last year. I miss him every day.

We're crazy to get so attached to our pets......but it's the type of crazy that I embrace.

That makes sense, MM. Coupling caps have a significant effect on tone. We're glad to have been of assistance.

Wow......very complex. I'll keep your suggestion in mind, E. Thanks.

Thanks so much, Diego :)

That's great news, J. Glad to hear it.

You're welcome, RAD. Thanks for your very nice comments. I really am a vintage tube amp purist, but will definitely keep your request in mind. I enjoy learning about new topics and op amps may be it.

Thanks, Jon :)

Thanks, Jon.....glad you liked it :)