Hey,
Currently my amp is a Sovtek 6B4G PP Class A amp.
output stage is at around 340v (300v plate to cathode). OPTX is a 5K:8 unit.
bias is shared cathode and driver is a ECC99 with VR150 tube regulation into a 1:1/1 phase splitter tranny.
Now i want to upgrade it a bit.
What is a good bias point for Class A PP using these sovteks? I heard you can push them a little hotter....?
Should I use seperate filament supplies and seperates bias for each output tube?
Power supply is CLC with a small 3uF input cap a large 5H choke then I think over 180uF at output. Input stage is tapped from this through a dropping resistor to the VR tube...
I am looking for a bit more power and a little more musicality.. (isn't everyone).
So basically I am looking for ideas and advice on what I can do to this amplifer... I am open to changing the input tube and biasing of both input and output and changing PS... but the phase splitter tranny and OPTX stay.
Thankyou!
Currently my amp is a Sovtek 6B4G PP Class A amp.
output stage is at around 340v (300v plate to cathode). OPTX is a 5K:8 unit.
bias is shared cathode and driver is a ECC99 with VR150 tube regulation into a 1:1/1 phase splitter tranny.
Now i want to upgrade it a bit.
What is a good bias point for Class A PP using these sovteks? I heard you can push them a little hotter....?
Should I use seperate filament supplies and seperates bias for each output tube?
Power supply is CLC with a small 3uF input cap a large 5H choke then I think over 180uF at output. Input stage is tapped from this through a dropping resistor to the VR tube...
I am looking for a bit more power and a little more musicality.. (isn't everyone).
So basically I am looking for ideas and advice on what I can do to this amplifer... I am open to changing the input tube and biasing of both input and output and changing PS... but the phase splitter tranny and OPTX stay.
Thankyou!