Question on Project Tube Box S2 setup.

[EJC1]

I just ordered a Project Tube Box S2 phono pre-amp.
I will be using it with a Thorens TD106-C with Shure V15III.

Would anyone know the correct switch setting to use on the bottom of the S2?

 

[Mr Boochie]

I'd try this setting first. May need to experiment with the pf loading, to get to final tone you like.

Examples of typical settings Ortofon 2M Red(MM)

input capacitance 147pF, input impedance 47kohms

3 =ON

REST = OFF

https://www.project-audio.com/wp-content/uploads/2018/04/Manual_Tube-Box-S2.pdf

 

[MRL_Audio]

Why not read the manual and experiment using your ears as the guide?

 

[stratokaster]

Shure V15 Type III recommended loading: 47 kOhm resistance, 400 to 500 pF capacitance. Assuming the ideal capacitance setting is ~ 450 pF.

Your phono cables are likely to have capacitance of about 60-100 pF on their own. We need to subtract this from the "ideal" capacitance.

According to the manual, the best settings would be: switches 1 & 3 = on, the rest = off

 

[EJC1]

Why not read the manual and experiment using your ears as the guide?

I will. I have not received the preamp yet and thought I'd check from settings first.
Given its' age I did not think that the V15 would be on the Project list

 

[EJC1]

Shure V15 Type III recommended loading: 47 kOhm resistance, 400 to 500 pF capacitance. Assuming the ideal capacitance setting is ~ 450 pF.

Your phono cables are likely to have capacitance of about 60-100 pF on their own. We need to subtract this from the "ideal" capacitance.

According to the manual, the best settings would be: switches 1 & 3 = on, the rest = off

Thank you. At least I know my thinking was going in the right direction

 

[EJC1]

I'd try this setting first. May need to experiment with the pf loading, to get to final tone you like.

Examples of typical settings Ortofon 2M Red(MM)

input capacitance 147pF, input impedance 47kohms

3 =ON

REST = OFF

https://www.project-audio.com/wp-content/uploads/2018/04/Manual_Tube-Box-S2.pdf

Thanks, apprecite the help

 

[Mr Boochie]

Thank you. At least I know my thinking was going in the right direction

You prolly want to put the phono pre-amp in a place you can access. So you can easily change the DIP-switch settings.

 

[MRL_Audio]

I will. I have not received the preamp yet and thought I'd check from settings first.
Given its' age I did not think that the V15 would be on the Project list

The manual is available online in more than one place. I have it if you send me your email in a PM. No preamp manual I’ve ever owned had a list of setting based on cartridge make model. They may have used an example but not a table of them. The manuals are usually driven by the cartridge output and impedance. As I said earlier use the right settings for the output of the cartridge first and let your ears determine the other setting. Good luck.

 

[EJC1]

The manual is available online in more than one place. I have it if you send me your email in a PM. No preamp manual I’ve ever owned had a list of setting based on cartridge make model. They may have used an example but not a table of them. The manuals are usually driven by the cartridge output and impedance. As I said earlier use the right settings for the output of the cartridge first and let your ears determine the other setting. Good luck.

Thanks for the offer but I found it