1n914
thank you for the information.. are you using 1n914 diodes? It looks very nice
I don't think replacing the zener will change anything. The zener is just a voltage reference and the darlington transistor configuration draws a very small amount of base current.
The MJE15034 is responsible for delivering enough current, and must have a sufficient heatsink.
I think this regulator has enough current capabilities to supply an additional DOA33.
Try it, and just feel the MJE15034 not heating too much. I don't think it will.
thank you for the information.. are you using 1n914 diodes? It looks very nice
DOA33
Thank you! I think the diodes are 1N4148...
If I replace the 33v 1w zener diode in 4b with a 3w 33v zener diode
thank you for the information.. are you using 1n914 diodes? It looks very nice
Thank you! I think the diodes are 1N4148...
Attachments
pcb's arrived
Attachments
@ EVERYONE
This is a very exiciting prospect, getting the Bryston 4BSST sound at a fraction of the price, and getting to build it yourself!
So what's the update from those who have built them already. Are you happy with it? Any pitfalls that new builders should keep in mind? Anything you would have done differently? Is it recommended to buy the prepopulated boards or best to populate it yourself?
This is a very exiciting prospect, getting the Bryston 4BSST sound at a fraction of the price, and getting to build it yourself!
So what's the update from those who have built them already. Are you happy with it? Any pitfalls that new builders should keep in mind? Anything you would have done differently? Is it recommended to buy the prepopulated boards or best to populate it yourself?
Another Bryston 4B SST board
There appears to be another board on aliexpress called "Refer to Bryston 4B SST", but this board does not look like the ones that people in this thread are building.
Anyone have comments/insights onto this board?
There appears to be another board on aliexpress called "Refer to Bryston 4B SST", but this board does not look like the ones that people in this thread are building.
Anyone have comments/insights onto this board?
Pairs of MJL21193/MJL21194 are impossible to obtain. Also other similar MJL211.. alternatives are non-existent at the moment.Hi master of Diy. Can i use 2sc5200/2sa1943 pair like power amp for the 4B?
Has anyone tried 2sc5200/2sa1943,MJL4281A/MJL4302A or MJL3281A/MJL1302A? Are there problems due to the higher fT?
Any other alternatives?
Discussion about exhaust transistors.
https://www.diyaudio.com/community/...tion-current-sharing-and-output-stage.306789/
https://www.diyaudio.com/community/...tion-current-sharing-and-output-stage.306789/
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