nice one tony! better start your own tony's DIY thread... 
and i am looking to start a transformer thread, to help people out there to make simple chokes and traffo..
so back to the thread topic, i wonder what alex is cooking up right now.
i know he has few projects going on.
mind to post update alex?
Hi Edrel.
So far I have done these:
1. Built an SE EL84, 12at7 input/driver, sounds great! This is the best bang for the buck tubed amp I have ever built.
2. I have prototyped several 2a3 SE amp, using the following for input/driver: triode strapped EL84, 5842 (cap coupled and interstage coupled, the interstage version sounds excellent, but the Lundahl 1660s will break the bank), 6n1p input-12b4 driver (this sounds ok, but a bit confused), 6n1p input-6s4a driver (sounds similar to the 6n1p-12b4), 12at7 and 5687/7119. I did the 12at7 first using plate resistor, after all my iterations I went back to the 12at7 using plate chokes and I think for price/performance, this is the best combo, next is the 5687/7119 input/driver.
3. I have prototyped the following aikido circuits: 12au7 input/12au7 output, 6n1p input/12au7 output, 6cg7 input/5687 output, 6cg7 input/7119 output. Best combination I got is United 6cg7/Sylvania JAN 5687 and United 6cg7/Amperex 7119 (very close) and second best is 12au7/12au7.
4. I have prototyped a 5842 preamp using a transformer output (sounds too HiFi to me, hehehehe...)
5. I am currently working on a TV tube for output tube on an SE amp (tube will remain nameless until am done)
6. Next project might be an Octal aikido phonostage (I already built a nine pin aikido phonostage which is better than most commercial phonostage).
Am too busy. I have accepted to do an SE KT88 for Romy Martinez a couple of years ago, and I have just cut the aluminum chassis (previous, Edrel is out of tranny cores). I will do my best to finish this ASAP.
Am also doing a 2a3 SE amp for Bey, I just finished the prototype a couple of weeks ago (12at7-2a3 SE), time to order irons from Edrel.
Tony,
sali ako dun sa transformer thread.....
parang busy si alex sa software presentation sang-ayon sa facebook nya....
I am in the middle of a software project for our company (a comprehensive software system to manage all aspect of our operation). So there are a lot of presentation from our vendor which I need to look at, scrutinize, approve/disapprove, manage budget, etc. This is taking a toll on my tube projects.
Anyway, I hope to finish this project within the year (we started early last year). This project is the first in the country to use an open source ERP for a company our size!
