Hello
i am referring to an old post on page 53 of the former Stax Thread. May be somebody can help.
Thread an post : (Its Post 791 by audiod)
http://www.head-fi.org/t/223263/the-stax-thread-new/780#post_2785425
Member "audiod" postet a "Stax High Voltage Supply" for normal and High Bias. I copied the circuit and build it on a new neutral circuit board.
I have an Stax SRD-6/sb
http://bilder.hifi-forum.de/medium/526956/stax-srd-6-sb-schaltplan_559890.jpg
Moreover i followed the instuction of a member and removed the speakeroutput part and connected the transformers directly. Also i placed a needed extra 230V~ cable from the outside and installed a main switch to switch this 230V~.
But then problems started. My local dealer didnt know what "audiod" ment with the Z1100. He knew it is a bidirectional diode but values ?? He gave me one and i tried it but i could only measure 100V LB and 200V HB. (I know that with the inner resistance of the Measurement tool it might be a little more in real but just about +1/3. And it sounded not good (distorted, no bass)
Then i was exploring what was wrong:
- Measured parallel after "my" Zenerdiode and got 55V (which again might be a lack of measurement tool)
- Then i removed the Zener and wow - i got a klling maschine. 580V LB and 1000+ at the HB (measured at the connector)
Knowing that this again might be more i might have 880V and 1000++
I now run the maschine on the LB with 580V/880V (measured/real) which is at the edge of what my earspeakers can handle (SR-003).
I´d really appreciate to come back to the diagram with an zener but with overall correct values. So - can anybody translate this (audiod´s) circuit diagramm to 230V~ input setting and tell me which Zener to use ? May be i have to change the place where i connect the LB/HB output part to the cascade tree ?
I would like to have in the end a proper 230V and 580V probias"signal"
Thanks