Proposed Transfomer/Valve Layout

[BL21DE3]

Hi Folks,

This is my first post here having lurked around the forum for a while now. I'm in the process of building a valve phono stage. The circuit/electronics are all sorted, so now plans have shifted to the case. I've attached a schematic of the proposed layout for the valves and transformer, with the valves being numbered in accordance with their position within the circuit (i.e 1 is the first valve etc.). My query is can any of the more experienced DIYer's spot anything inherently wrong with this layout or suggest a more sensible layout? Any advice would be appreciated.

Cheers,
BL21DE3

 

[Zen Mod]

just go for it.

 

[Eli Duttman]

The physical arrangement makes sense.

Did you allow for DC heating of the 6SL7S?

 

[BL21DE3]

Thanks for the positive replies guys 🙂.

The 6SL7s are going to be AC heated for the moment, though there is enough room to implement a DC heater circuit.

 

[fdegrove]

Hi,

The 6SL7s are going to be AC heated for the moment, though there is enough room to implement a DC heater circuit.

It's not just real estate but you'd need the proper xformer too...
Either way, phonostages and AC heaters don't really wed too well...

Cheers,😉

 

[Eli Duttman]

Either way, phonostages and AC heaters don't real wed too well...

Frank is RIGHT. Energizing heaters with DC in phono stages is MANDATORY.

It's just possible that a RCA circuit built around genuine 7025s or Sovtek 12AX7LPSes would have tolerable residual hum levels. Without the spiral wound hum bucking heater, there isn't a ghost of a chance.