Rozenblit Grounded Grid Cascode Pho Preamp Project

[contax]

Hello,

I want to build the GG Phono Preamp project from the Bruce Rozenblit Audio Reality book. I have designed the PCB, but my experience is poor.

Bruce suggest to use a PCB in order to decouple the tubes from chassis vibration and reduce microphonic effects.

Here you can view the layout. I would be very grateful if you could give some advice.

http://www.flickr.com/photos/25900193@N02/2943671975/in/set-72157608056891191?edited=1

http://www.flickr.com/photos/25900193@N02/2943671683/in/set-72157608056891191/

The top copper layer has been used only for ground tracks and heaters supply. The tubes are 4*6922 and 1*12AU7A.

Thanks for your help.

Best regards🙂

 

[dia thien thai]

Can you sent for me cricui plesa!

Can you sent for me cricui plesa! i very neet it! thank

 

[dia thien thai]

Schematic i Wanted

Can you sent for me the parlist about the thi phono! I like it!!
Thank you very much!
my e-mail: quanghao168@yahoo.com.vn

 

[contax]

Bruce Rozenblit book

Hello,

You can find the schematic and parts list in the Bruce Rozenblit book:

http://www.transcendentsound.com/audioreality.htm

Best regards🙂

 

[dia thien thai]

Thank

I foun it ! But i live in Viet nam I cant pay money for him !
You can sent fof mee the parlist! thank!

 

[Merlinb]

Re: Schematic i Wanted

Can you sent for me the parlist about the thi phono! I like it!!
Thank you very much!
my e-mail: quanghao168@yahoo.com.vn

You can view some of the book (and parts list) through google: http://books.google.com/books?id=Bl1XE-ki0WwC&printsec=frontcover&dq=audio+realtiy#PPA105,M1
The schematic page is hidden. But some of the other designs can be viewed.

 

[dia thien thai]

yes

Here you can view the layout. I would be very grateful if you could give some information please!

But the parlit not the the samle this link:

http://www.flickr.com/photos/259001...891191?edited=1

http://www.flickr.com/photos/259001...57608056891191/

Help me! please!

 

[revintage]

Use Paypal

Paypal is not dependant on the country you live in, as long as you have a MC or VISA.

You will the get the book downloadable as PDF.

 

[contax]

Sorry, I cannot give you the parts list or the schematic. This is not the purpose of this post.

 

[revintage]

Contax,
In order to get even better insulation when using PCB i use M3 bolted tube sockets with rubbergrommets.Check the upper tubeholders in the pic.

 

[dia thien thai]

parlist

You see the layout is not the sample thi parlist!
You can show me please! thank you! I need it

 

[SY]

Then buy it and let the author/designer get the royalty that is due him.

 

[revintage]

In addition to my photo I also use rubbergrommets in the boltholes at the corners of the PCB.

Dia..... give up and buy the book as we others did!!!!! It´s not that big an investment. It´s easy to do online. Then remember the circuits are not for commercial use if you plan to sell kists/PCBs.

 

[dady]

vamos amigo si se trata de mejorar no de copiar, aquí nadie quiere ello y esta página está claramente dispuesta para ese fin, podemos compartir esa información todos y con el fin de intercambiar información. No seas desconfiado que en algún momento te hará falta algún dato o circuito y seguramente que lo solicitarás a la web.

 

[contax]

Hola Dady. Abandoné el proyecto. El previo que comercializan es otro un nuevo diseño que mejoraba el que que aparece en el libro Transcendent Sound Phono Preamp
Te sigue interesando el del libro?

 

[SY]

English please. Forum rules.

 

[doorman]

Then buy it and let the author/designer get the royalty that is due him.

Totally agree. Support those who make this hobby (more) accessible!
Don

 

[dady]

I so sorry partners, there is a spanish speaker and i sent a message in spanish. I thank is not trascendent but if somebody needs to know i can (or the automatic web translator of babefish) give.
Best Regards and happy new year.