I have some 7189A pulls from an old timer and i decided its time to put them into good use. Along with those are 5R4WGB rectifier from a friend and some 6922s and 6N1Ps from my tube stash. So i told myself, what am i waiting for? Build some SE!
The design was based on the decware zen amp which uses SV83/EL84 tubes. See here:
http://www.decware.com/newsite/mainmenu.htmSimple. Easy to build. Putting out 2W of power according to decware.
Here is my version. I modded heavily on the PSU starting with a large PTX and adding a choke and splitting the driver supply pseudo mono style. I have used whatever parts I have in my bin..The big filter cap is a Marcon 225uf 475V i bought from a surplus shop for 200 pesos. Testing the amp yesterday night:
The innards. The OPT is under the chasi. Notice that left and right OPTs near the speaker binding posts. Actually I tried to make an OPT from a 3/4 leg Z11 core, trying to see how smaller i can get away with and see if it will work..It does..
This is still a test bed and will need some tweaking. Sounds good right now but can sound better. I will need to exert some more effort. I have some vitaminQ oil caps lying around and yes, I will finish that wooden plinth..
