OPINION ON TNT SOLIDPHONO

ALPUY · 09:15 PM

Friends, I am to build a RIAA phono preamp. I am currently using a circuit-based pre Rod Elliott. I ordered the parts on eBay to build a SOLIDPHONO of TNT. as they say is based on the LEHMANN BLACK CUBE.
I would like your opinions on the project. step and advise me how to connect the in put, and published in the circuit in the negative input of TNT SSM2019 is connected to ground. It is so or not is connected to ground and remains balanced input?. Greetings Jose.

ALPUY · 3rd June 2012, 09:50 PM

Post the circuit. José.

kevinkr · 3rd June 2012, 10:10 PM

With inverting input grounded it is not a balanced input. If you want to use a balanced input configuration refer to the application note for input bias current path.

ALPUY · 3rd June 2012, 11:17 PM

I appreciate your information. Do you think of this circuit with its power supply. Is apparently based or clone of the Leheman Black Cube (expensive). José.

kevinkr · 4th June 2012, 02:53 AM

I don't think the supply is particularly brilliant, I'd like to see something closer to the Sulzer/Jung super regulator..

I was not terribly impressed with the black cube when I heard one. (A/B test against a cello phono stage and one of my own)

ALPUY · 4th June 2012, 03:54 AM

OK. I will investigate phono cello. José.

kevinkr · 4th June 2012, 04:20 AM

Cello phono is all discrete and probably a bit difficult to duplicate, but IMO not impossible. The results will be worth it if you can pull it off.

vinylkid58 · 4th June 2012, 05:04 AM

Quote:

Originally Posted by kevinkr

I was not terribly impressed with the black cube when I heard one.

From what I've read, you're not the only one.

jeff

ALPUY · 4th June 2012, 05:03 PM

OK. Try to find information and CELLO circuits. The problem is that I bought on eBay and components to build the Solidphono. But in the world of DIY audio i never finished. If I can build it. Greetings and thanks for the feedback. Joseph.

kevinkr · 5th June 2012, 04:45 AM

Since you have all the parts you might as well finish it..

Some modifications to the power supply should be possible by just cutting some etches and jumpering as needed.

It can serve as a reference for determining the merit of other designs and when superseded by something better you can just loan it out.

31st May 2012, 12:25 AM	#1
ALPUY diyAudio Member Join Date: Mar 2012 Location: Montevideo, Uruguay	OPINION ON TNT SOLIDPHONO Friends, I am to build a RIAA phono preamp. I am currently using a circuit-based pre Rod Elliott. I ordered the parts on eBay to build a SOLIDPHONO of TNT. as they say is based on the LEHMANN BLACK CUBE. I would like your opinions on the project. step and advise me how to connect the in put, and published in the circuit in the negative input of TNT SSM2019 is connected to ground. It is so or not is connected to ground and remains balanced input?. Greetings Jose. Last edited by ALPUY; 3rd June 2012 at 09:15 PM.

3rd June 2012, 10:10 PM	#3
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	With inverting input grounded it is not a balanced input. If you want to use a balanced input configuration refer to the application note for input bias current path. __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan

4th June 2012, 02:53 AM	#5
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I don't think the supply is particularly brilliant, I'd like to see something closer to the Sulzer/Jung super regulator.. I was not terribly impressed with the black cube when I heard one. (A/B test against a cello phono stage and one of my own) __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan

4th June 2012, 04:20 AM	#7
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Cello phono is all discrete and probably a bit difficult to duplicate, but IMO not impossible. The results will be worth it if you can pull it off. __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan

5th June 2012, 04:45 AM	#10
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Since you have all the parts you might as well finish it.. Some modifications to the power supply should be possible by just cutting some etches and jumpering as needed. It can serve as a reference for determining the merit of other designs and when superseded by something better you can just loan it out. __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan


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3rd June 2012, 09:50 PM	#2
ALPUY diyAudio Member Join Date: Mar 2012 Location: Montevideo, Uruguay	Post the circuit. José.

3rd June 2012, 11:17 PM	#4
ALPUY diyAudio Member Join Date: Mar 2012 Location: Montevideo, Uruguay	I appreciate your information. Do you think of this circuit with its power supply. Is apparently based or clone of the Leheman Black Cube (expensive). José.

4th June 2012, 03:54 AM	#6
ALPUY diyAudio Member Join Date: Mar 2012 Location: Montevideo, Uruguay	OK. I will investigate phono cello. José.

4th June 2012, 05:03 PM	#9
ALPUY diyAudio Member Join Date: Mar 2012 Location: Montevideo, Uruguay	OK. Try to find information and CELLO circuits. The problem is that I bought on eBay and components to build the Solidphono. But in the world of DIY audio i never finished. If I can build it. Greetings and thanks for the feedback. Joseph.

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