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Which trannies for 5f2a build?

SFenn
June 28th, 2012, 05:52 PM
Since my 5e3 turned out so well, my wife wants me to build her a tweed princeton based amp.
I will be going off the original fender and the weber layouts as my starting point.
I really like the Classic Tone transformers that I got for my 5e3 and I really like the service I get from Triode Electronics.
The problem is they have a few different ones for the princeton. Which ones should I be looking at? I only need the PT for 120volts and the OT for 8ohms.
The searching I've done for 5f2a builds end up being Weber kits using Weber transformers.

Thanks

gman243
June 28th, 2012, 05:56 PM
http://triodeelectronics.com/champbundle.html
I think these are the ones you are looking for. I just recently finished up one of triode's 5e3 kits and it is awesome! good luck on the 5f2a project!

boredguy6060
June 28th, 2012, 07:33 PM
If you live in an area like I do where the line voltage can reach 118-119 the advantage of the 40-18027 is the 550vHT vs. the 630vHT.
I have used the 40-18027 because without it the B+ will always be too high, by using the red/white leads instead of the red/red I get B+ much closer to spec.
It is a little more money, but again if you live in an area like mine it is the best solution for bringing the amp closer to specs.
IMHO, too high B+ ruins the character of the amp.

I'm a big fan of Classictone and Triode, not affiliated, just a fan.

Telenut62
June 28th, 2012, 07:45 PM
+1

tubeswell
June 28th, 2012, 08:28 PM
THe weber OTs are actually quite good for the price. Its the PTs that are a bit iffy in 50Hz mains countries.

keithb7
June 28th, 2012, 08:36 PM
I recently built a 5F2A with an Allen T08C OT as it offered 4 and 8 ohm impedence.
For PT I used Heyboer HY022772 which did not fit in the Weber chassis I ordered. I had to modify the chassis. Sounds great!

hackworth1
June 28th, 2012, 09:14 PM
Here's a PT I like for the 5F1, 5F2:

http://www.tubesandmore.com/products/P-TF22772

No center tap on the heaters. But if you use the 100ohm resistor twisted pair and connect them to your power tube cathode pin 8 (to overlay 17V DC voltage on the heater circuit) it makes a quieter amp than one with the heater center tap.