NoPants
1000+ Head-Fier
- Joined
- Aug 14, 2006
- Posts
- 1,003
- Likes
- 98
Yeah DC coupling still has the bypass caps, but I guess I rationalize it by telling myself that putting boutiques there actually hurts the performance so it's "better" because of the lack of dependency. I think I would also use the russian parts if I were to do this again.
I have had the most mileage from the input tubes so I think we're in agreement. I swapped out half the RFT octet for that very reason. I have to go fetch my toshibas just to double check. On that note an interesting variant of the Megatron might be to use tube CCS's everywhere instead of solid-state parts. I was thinking the ac-coupling also allows me to use other interesting input tubes like c3m/c3g (what I happen to have on hand). BTW it's been a while since I looked at the schematic but I think the feedback is local, on the output stage only. It's consistent if the input stage makes the most difference.
I think you would do good justice to the Megatron if you did a point to point version Frank. Depending on what parts I have left over I might attempt to make a simpler version with a BHSE supply and russian caps. I'm not sure how sensitive the output stage is to temperature drift though.
Kevin also said his direct-drive DHT amplifier is going to be structured like the megatron, pretty curious as to how that's going to look...I can't really picture the schematic at the moment.
I have had the most mileage from the input tubes so I think we're in agreement. I swapped out half the RFT octet for that very reason. I have to go fetch my toshibas just to double check. On that note an interesting variant of the Megatron might be to use tube CCS's everywhere instead of solid-state parts. I was thinking the ac-coupling also allows me to use other interesting input tubes like c3m/c3g (what I happen to have on hand). BTW it's been a while since I looked at the schematic but I think the feedback is local, on the output stage only. It's consistent if the input stage makes the most difference.
I think you would do good justice to the Megatron if you did a point to point version Frank. Depending on what parts I have left over I might attempt to make a simpler version with a BHSE supply and russian caps. I'm not sure how sensitive the output stage is to temperature drift though.
Kevin also said his direct-drive DHT amplifier is going to be structured like the megatron, pretty curious as to how that's going to look...I can't really picture the schematic at the moment.