High-End Regulated Buffered Inverted GC

[joensd]

Megalomania is taking over....
Guys, no offense whatsoever but...
If you have something new on your drawing board go to the patent´s office.
If you´re jealous of others selling basic circuits you should seriously consider your own business.
Regarding the PCB layout I think Brian is more than likely doing his own anyway.

[Pedja]

Anyhting you can find here hardly has anything with PATENTS. But is the result of someone's work. If it is disrespected, you will probably not see it anymore. That is the goal?

[Pedja]

Some of the best sounding circuits I tried so far are completely trivial and there is no chance to be patented. But there is a chance to be copied/abused. That is why you can not find them online. Get better idea about value of that what you do can find.

[carlosfm]

Guys, I'm sorry (Pedja too), but what has put me off was that Peter is provoking me on the Pass forum.
I don't sell anything, I have no commercial interest, I still didn't figure out why he said that.
Stupid joke.

Back on topic, forget it.

[Pedja]

The circuits I am posting, I am posting because they sound good. I am rarely posting the circuits that I did not try at all and if I do that, you can find clear notice about that.

Without smallest problem, I could post 10 or 100 times more circuits of the same technical relevance but without idea about their sonic achievements.

To find if the circuits do or don’t do, it needs time, concentration, taste, experience, knowledge, some money… it takes you.

And I yet often make that experience available. Why? To see someone selling it? To listen something about my megalomania and jealousy?

Pedja

PS: Nick, will be interesting to see what buffer... tube, jfet, opamp... whose work is it the result of...?

[Nuuk]

Pedja's quite right. It is stupid to kill the goose that lays the golden eggs!

Everybody take a deep breath, concentrate on your feedback resistor and let's make love (ly regulated GC's) not war!

[carlosfm]

Originally posted by Pedja
The circuits I am posting, I am posting because they sound good. I am rarely posting the circuits that I did not try at all and if I do that, you can find clear notice about that.

The same with me, Pedja.
I have opened very few threads here, just when I find out something that really sounds good and it's worth the efford to build.
BTW, I know that anything coming from you has to be good.

[arniel]

Originally posted by jackinnj


as the OPA627 has "offset null" you can insert a trimmer resistor on the appropriate pins and null out any DC --

Zobel or 0.22R -- depends upon your application, the load and cables you are using.

I understand about being able to adjust for DC generated by the buffer/power amp, but I really want to know about using a servo to remove any DC component coming from the source as well.

Also, what criteria (calculations) can I use to determine whether to build a zobel or a resistor, or is a case of building both and listening to the result...

Cheers,

Arnie

[carlosfm]

Originally posted by Franz G
Regulation must be the way! Maybe not for the famous first watt, but I will try it soon.

What regulators to use, with no separate secondaries, with a single center tap?

Franz, in my experience, when an amp is not driving a pair of speakers properly, you notice that even at low volumes (the "famous" first watt).
When music gets more complex and all the instruments come in at once, you stop following the music, it's a mess.
And bass is not tight, even at low volumes.

Sometime ago I searched and didn't find a decent negative variable regulator for this...
But you can easily transform a trafo from CT to independent secondaries.

[KT]

Just so you know, some of us on the board aren't designers or engineers, but just love to listen to good music, build our own equipment, and learn a thing or two about how stuff works.

I would hate to see this dry up - I've learned so much more on this board than I could have on my own. So I implore you guys not to abandon this community. A lot more people than you know appreciate your insights and experiences. It allows those of us who don't have extensive design knowledge to partake in the fun and satisfaction of DIY audio.

I understand that some people are upset that their ideas are being used by others for financial gain without just compensation. I would be upset, too, and I don't know what the answer to this is.

All I can say, however, is that you guys have built a great community with great discussion which results in a great synthesis ideas. So many people are benefiting from this and, in 99.9% of cases, not in a financial way.

I hope you guys stay.

Best,
KT