diyAB Amp The "Honey Badger" build thread

I think Pete's view was it's pretty much the same cost to just add another output pair as to add the full blown SOA protection. Simple over-current detection can then be used without the rude noises associated with a SOA protection system starting to activate when driven hard. I agree with him there, no need for SOA in home hifi. Pro sound is a different deal though.
 
without the SOA protection, short the speaker terminals whilst playing music and see what happens.....
my first badger build went up in smoke that way...
i suspect the the owner was so delighted with the music that he ran the amp full throttle even way beyond clipping...
it only took a few seconds to have the magic smoke come out..
 
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Valery (Vzaichenco) designed a protection / control system to start and protect a tube hybrid amp and over the past couple years we've refined it to be much easier to add to any amp. At the first sign of any trouble, over heat, over-current, DC on the output or mains power loss it instantly disconnects the speakers and shuts the power supplies down. We've come up with optional power supplies with quick shut down rails so the supply caps won't continue to discharge through the amp in case of failure too. How to build a 21st century protection board AMP CONTROL BOARDS – Virtual Zero Audio Store
 
I did some work around protection circuit ...... see post 1218 and also see later comments ...

you link brought me back to my own post? why is that?
 

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HONEY BADGER

Hello
greetings i have made 2 channels of the Honey Badger tried it out
at low volume low voltage sound is very clean is 40 0 40 AC
transformer ok for 4 ohms load i dont need much power/ch its for
indoor home use and please best method of biasing the honey badger
warm regards
Andrew;)
 

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