What are your experience between the two? Pros and cons of each.
If I want to replace the gyrator of Gen 4 with plate choke, what is the inductance and DC current??
I guess the B+ would be much lower with plate choke.
If I want to replace the gyrator of Gen 4 with plate choke, what is the inductance and DC current??
I guess the B+ would be much lower with plate choke.
I've built this in the past, and plate chokes work fine, but since then I prefer other tubes. My favourite preamp tube is the 6C4C right now. If I was going to go through the whole process of a build, that's what I'd use. Other possibilities if you can put your hands on them would be 2a3, 10Y, 46, 47. Even 26. The 4P1L has the virtue of low Ri and it's a good tube but not a great tube. It needs at least 25mA and even up to 35mA. Sounds better with plenty of current.
Not a problem as I have the power supply built for 6H30 and its operating current is 30mA.
What is your comment about the Siberian Gen 4? Don't you think regulated power supply suitable for that?
Build it and see. It's many years back that I built it myself and it didn't stay long. I don't really remember it too well, except that I stopped using the 4P1L and moved on to other tubes.
> regulated power supply suitable for that?
The Siberian Gen 4 uses Ale's µ-follower module. This stabilizes and filters the B+ supply already, so you don't need a supply regulator for that.
With transformer-coupled Line amps, you can use a regulated supply. But the signal-current is small in a Line amplifier, and for low cost, good value: you could stabilize the supply voltage with 3 or 4 series-connected 1N53xx 5W zeners, and clean up with 1K 3W resistor and a 40µF 400V DC-Link capacitor.
either of these versions gives good sound. Choose µ-follower for standard system with short cables; or choose transformer-coupling if you have long cables into monoblock power amps, or many different source units and you want to isolate the grounds.
The Siberian Gen 4 uses Ale's µ-follower module. This stabilizes and filters the B+ supply already, so you don't need a supply regulator for that.
With transformer-coupled Line amps, you can use a regulated supply. But the signal-current is small in a Line amplifier, and for low cost, good value: you could stabilize the supply voltage with 3 or 4 series-connected 1N53xx 5W zeners, and clean up with 1K 3W resistor and a 40µF 400V DC-Link capacitor.
either of these versions gives good sound. Choose µ-follower for standard system with short cables; or choose transformer-coupling if you have long cables into monoblock power amps, or many different source units and you want to isolate the grounds.