[jazbo8]

Yup, it is very hard to read r.a.t. at times because of the incessant bickering between the regulars there - those wars have been going on for years - that's way they like it... Out of the mountain of verbiage, there are nuggets of great information and insight, particularly from Mssr. Patrick Turner and John Stewart, they are real engineers with decades of actual design and build experience, too bad they don't frequent other forums at all. Oh well, you just take what you can from r.a.t. and move on... I admire you for taking your DIY hobby and making it into a business, which is no doubt both challenging and rewarding, hope to hear from you on the new designs whenever you get a chance to post.

[TerryG]

Jaz,

That exchange on that forum was informative, although the exchange resembled bickering siblings.  I still vacillate between theories on what is actually happening in the circuit with regard to some things, I understand that some symptoms would indicate some things, but on the other hand it just seems so strange how it all goes down.  It would have been better to have an accurate description of what is actually happening rather that dogmatic statements with obscure proofs.  I purchased a distortion meter in a first attempt to figure some things out, but I really need a spectrum analyzer to get to the bottom of things.    My experience with that forum with Mr. Turner and the rest was they have have a lot of experience and know what they are doing, but getting what you want from them is not easy, they would much rather say your too stupid to understand and defend why than just help you out.

My entire goal is to fully understand in order to repeat by calculation rather than trial and error (which takes days or weeks with each power tube).  Every tube behaves differently, and rightfully so as they all have different specifications, but I have gotten much faster at figuring each tube out.  Vacuum tubes made for audio really do perform better no matter how popular or not they may be.   I can't wait to get my hands on some KT-170's in spite of how ugly they are.  The KT-120's have not disappointed me they are nice sounding, or should I say you can make them sound nice.  As with any tube it all depends on the supporting circuitry.

Don't be too impressed with my making a business out of this, as my largest obstacle has been the website.  I have plenty of photos but I can't figure out how to get them on the site.  I have to figure out a way to share all this with more people.  If I can't figure out how to make a legitimate business of it soon, I will just have to make what I have figured out public domain information for everyone to have.  The problem with that is that this is all so delicate you can really mess it up and end up with nothing much better than the norm if you don't know what your doing.  There are some things that won't mess it up too bad like the coupling capacitor between stages, I have used even the worse caps and things don't get too bad.  But if you don't have a nice final cap in the power supply the power tube won't perform its magic.  Odd because you would expect it to be the other way around. 

Odd I found this thread by accident the other day, I have thought about it often but never could find it again. I'll keep and eye on it for a few days.

Terry

[jazbo8]

I have to figure out a way to share all this with more people.  If I can't figure out how to make a legitimate business of it soon, I will just have to make what I have figured out public domain information for everyone to have. 
Terry

You need a webmaster or an un-paid high school intern... The kids are so smart these days, they can probably figure it out in no time... Yes, the webpage is very important marketing tool, you got to get that sorted out asap, even if you have to hire someone to do it, otherwise, no word gets out.

[TerryG]

I really didn't think starting a new thread was needed, and probably the only people interested in an update were the ones that read this thread. 

Anyway I updated (finally) my website, been making amps at a good rate lately so I am stepping up all this.  I will be adding more photos soon.

www.ladolceaudio.com

Terry

[kentajalli]

I also believe there is no such thing as "Triode is better than Pentode" or anything as such.
If the comparison was clear-cut and accepted, then everybody would be using triodes and abandon pentodes, wouldn't they!
I find triodes a little bland and compressed, but not always.
say in my OTL amp (circlotron) which is technically a pushpull triode, I love the sound.
But with my EL84 amp, in triode mode (with manual bias) it will go slow and flat, in pentode it gets up and boogies!
Horses for courses I'd say.

[mresseguie]

Terry,

I only just now noticed this thread. It seems you have some magic in your fingers, no? 

I have a suggestion for your website. There doesn't appear to be any contact info - be it telephone or email address. Don't you think including contact info might be helpful?

Michael

P.S. I know folks can contact you here or, perhaps, another forum, but there are many folks who will stumble onto your website without knowledge of this thread.

[jostber]

These amplifiers seems like a very interesting concept.

Some more tips for the web site:

- A detailed contact list
- A price list for all products
- An easy way to order (with indication of lead time if there is one)
- More pictures