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I have stared at that schematic for a long time and thought about building it. It is essentially a 5F2-A Princeton, but with a pair of power tubes in single-ended format, rather than just one as in the actual Princeton (and Champ), and a paralleled pair of 5Y3 rectifier tubes for the added current requirement. Is the real increment to wattage, by adding the second power tube, enough to yield an audible boost in output level? I'll let you tell us, Alan. ;) Looking forward to your report.
 

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Discussion Starter · #4 ·
I have stared at that schematic for a long time and thought about building it. It is essentially a 5F2-A Princeton, but with a pair of power tubes in single-ended format, rather than just one as in the actual Princeton (and Champ), and a paralleled pair of 5Y3 rectifier tubes for the added current requirement. Is the real increment to wattage, by adding the second power tube, enough to yield an audible boost in output level? I'll let you tell us, Alan. ;) Looking forward to your report.
Certainly I will report; I expect a stouter foundation than a champ or princeton and perhaps a noticable increase in headroom and volume(20% possibly if that can actually be described accurately) .
Mostly this is for my mind absorbing hobby desire...and it will look neat to nerds
 

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1965 Fender Mustang, Ampegs, anything to test an amp.
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I have stared at that schematic for a long time and thought about building it. It is essentially a 5F2-A Princeton, but with a pair of power tubes in single-ended format, rather than just one as in the actual Princeton (and Champ), and a paralleled pair of 5Y3 rectifier tubes for the added current requirement. Is the real increment to wattage, by adding the second power tube, enough to yield an audible boost in output level? I'll let you tell us, Alan. ;) Looking forward to your report.
or a Gibson GA-8 with dual rectifiers:
Rectangle Slope Font Line Parallel
 

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I built one of these 12 years ago. I think your Power transformer is too small with only 2A of 6.3VAC filament power. Steve Ahola from Angela wrote all the instructions etc and he recommended a Fender Deluxe size transformer so I ordered a Weber with dual secondaries.
 

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Discussion Starter · #17 · (Edited)
I built one of these 12 years ago. I think your Power transformer is too small with only 2A of 6.3VAC filament power. Steve Ahola from Angela wrote all the instructions etc and he recommended a Fender Deluxe size transformer so I ordered a Weber with dual secondaries.
You may be right...i have a 269EX also and it has 2.5 amps

.3 amps x 1(12ax7) = .3
.45 amps x 2(6V6) = .9

2 amps should cover it ...will see how it goes....making do with what we have is part and parcel of hobbyists and army personnel in the trenches back in the day and maybe folks in fly in communities
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Receipt Font Material property Magenta Electric blue

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