Shot in the dark here - but I've read some people on here mentioning that they have experience with some Arthur Loesch 300B designs.
I've got an opportunity to buy a pair of amps, however the owner doesn't have the schematic or ID for the output transformer... I tried rooting around the web to see if I could find the design based on tubes/power transformer, but no luck yet. I thought I might post here in the (off?) chance someone might be able to shine a light on it, or sound out any ideas. I am aware giving a priori statements on an amp and its performance without any schematic is tricky to impossible. In any case, I might try to track the schematic down through the original owner/seller (from a hifi store/dealer, not DIY I believe).
Tubes are:
2 x 6J5GT
5AR4
300B
Power transformer is Hammond 274BX. No markings on Output transformer. Any pertinent questions I could ask the owner to get an idea of what it is? 8 ohms with another unused + unidentified tap. Total weight of amp is 40 lbs plus each.
I'll be able to hear the amps before any sale, but as a first time amp buyer I am a little wary. Especially curious and want to go down the no feedback route, but don't have the knowledge to confirm if this amp falls into that category.
I've got an opportunity to buy a pair of amps, however the owner doesn't have the schematic or ID for the output transformer... I tried rooting around the web to see if I could find the design based on tubes/power transformer, but no luck yet. I thought I might post here in the (off?) chance someone might be able to shine a light on it, or sound out any ideas. I am aware giving a priori statements on an amp and its performance without any schematic is tricky to impossible. In any case, I might try to track the schematic down through the original owner/seller (from a hifi store/dealer, not DIY I believe).
Tubes are:
2 x 6J5GT
5AR4
300B
Power transformer is Hammond 274BX. No markings on Output transformer. Any pertinent questions I could ask the owner to get an idea of what it is? 8 ohms with another unused + unidentified tap. Total weight of amp is 40 lbs plus each.
I'll be able to hear the amps before any sale, but as a first time amp buyer I am a little wary. Especially curious and want to go down the no feedback route, but don't have the knowledge to confirm if this amp falls into that category.