Topologie sounds!..all those years building and i could understand that

[destroyer X]

Do you think i am rigth or wrong?

But explain your point of view.... it is open to you to open your mind and explain your thoughts...do you like to help?... do you have knowledge to use to help people?

Then come on!.... say what you think.

The hidden gênius..the shy ones..have now a subject to talk about.

I found that Techno, by Bora, is one of the best ones into focus and resolution...you can listen instruments other amplifiers just erase, delete them...just disappear....but Techno can reproduce... using a single speaker and comparing we see that Techno is better than several others.

You see.... the attached AD chip is also considered very good..observe the topologie is almost the same you have into Techno.... you have just to install CCS to the Techno Drivers.

Watch and search for similarities....for things alike.

regards,

Carlos

[destroyer X]

If that chip sounds the best!...and the topologie is the same as Techno, this explains why it sounds so good..and may be the best ...because this simple direct logics.

Observe with care...take a good look.... see, despite some auxiliary parts..the basic schematic, the frame, the basic extructure, the topologie..is almost the same.

regards,

Carlos

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Of course is not my intention to say Bora has copied the chip internal schematic....for sure he do not need to do those things...but WE CAN DO... WE CAN!... we can search for good sounding chips and copy the internal schematic and produce it discrete... if we do not know what makes good sound we can search for good sound ones and use the same frame, the same extruture, the topologie.

[darkfenriz]

Carlos, look carefully, these are two different topologies

[darian]

Totally different topologies... At the very least because of the folded cascodes and the diamond follower at the output...

Look again Carlos!

Regards

[destroyer X]

The second stage is not differential...i have watched with carefull and i could see i was wrong.

But we can explore that AD chip topologie...may sound good too doing it discrete.

thank you folks.

regards,

Carlos

.................................................. .................................................. ....

LET THE THREAD DIE...it is non sense..i could see that.

thank you all.

[destroyer X]

very interesting:


http://www.youtube.com/watch?v=s3PyVeUCIBk

[Bigun]

I always understood that the chip designers have different constraints than 'us' DIYers because of this they may end up with a topology that is different than would be the case if you started with the idea to make a discrete amp. Perhaps if we know what these different constraints are we would understand the chip design better when looking for inspiration for new discrete options ?

[destroyer X]

Darlington style, two stages differential.... current sink and CCS to feed.... VAS using two stages.... driver having low current and output in quasi complementary

Observe the regulator to the VAS.

This seems to be the topologie..so...if we build something like that may sound so nice as the TDA2050 chip.

Maybe a little better, as we have not the protections, that use to disturb a little... compresses... reduces dinamics...limits power, and sometimes distort clipping when the AGC cannot hold extremelly high transients.

It is alike the HRII...but uses a CCS to the differential and a composed diferential (4 transistors)...also uses quasi complementary..and have the advantage the internal transistors are matched when we cannot have them preciselly matched that way.

HRII has more treble because the lag compensation..smaller capacitors..also the phase advance system developed by Sansui..that capacitor in parallel with the driver stop resistance.

If we want TDA2050 sonics..and it is very good...we have just to build this way.

regards,

Carlos

[stinius]

Carlos
I have never looked closely at your amps “DX” or what ever you like to name them, is “Turbo Extreme” the newest “design”? I must say that after seeing this thread and also seeing that you think that the new”amp” by stee is a good amp, it really makes me wonder.

Have fun make “pizza”

[destroyer X]

and listening...there's no other way...can be excelent.... or the opposite...seems good...but no one can be sure just watching..or sniffing.

DHR Turbo was my last amplifier made..... also the Trust...but trust was something very old...just to be playing with..nothing really serious.

This one you told the name i do not know..maybe other guy have made something with name turbo.

regards,

Carlos