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Buckeye Amps: 2nd Generation Purifi EIGENTAKT 1ET9040BA Amplifier

For clarity, this is not one of our customers as far as I am aware
Thanks, but isn't the protection provided by the module itself?
Is there difference in protection between yours 1ET9040BA module amps vs other amps?
Or is it that your amp won't have such problem as he mentioned?
Thanks!
 
Thanks, but isn't the protection provided by the module itself?
Is there difference in protection between yours 1ET9040BA module amps vs other amps?
Or is it that your amp won't have such problem as he mentioned?
Thanks!
The module has protection, yes.

More that I cannot comment on the problem he encountered because I don't know his exact setup (such as referencing to "his power supply")
 
What the f... their short circuit protection, overload protection did not protect this condition?
That's surprising...
Short-circuit and overload is one thing,grounding the (balanced) output of a bridged amp is another.
There has to be a specific protection about it and also stated specifically (and a bold warning also) .
 
Short-circuit and overload is one thing,grounding the (balanced) output of a bridged amp is another.
There has to be a specific protection about it and also stated specifically (and a bold warning also) .
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1ET9040BA - Data Sheet (1.10)
 
What the f... their short circuit protection, overload protection did not protect this condition?
That's surprising...
It should be protected, but my actual situation did happen, and it happened twice. Both times, the MOSFET burned out. Of course, it happened when I tested with a sine wave. Maybe the music was not a problem. My 9040 module was purchased from the official store of purifi. Due to poor insulation between my terminal post and the chassis shell, when the signal was increased, the terminal post and the chassis leaked and arced, and the cause was found only after the second damage. It has now been repaired and sold.
If I'm not mistaken, the protection threshold of the bridge amplifier is to monitor the sum of the two output currents. When only one side is connected to GND, the current on one side needs to be doubled to activate protection, which should exceed the current that MOSFET can withstand. There should be no problem with a short circuit between OUT+ and OUT-.
Those who have samples can try this operation, maybe it's just this one that has a problem. I dare not do 2OHM sine wave full power test, but those who are brave can try it.
 
It should be protected, but my actual situation did happen, and it happened twice. Both times, the MOSFET burned out. Of course, it happened when I tested with a sine wave. Maybe the music was not a problem. My 9040 module was purchased from the official store of purifi. Due to poor insulation between my terminal post and the chassis shell, when the signal was increased, the terminal post and the chassis leaked and arced, and the cause was found only after the second damage. It has now been repaired and sold.
If I'm not mistaken, the protection threshold of the bridge amplifier is to monitor the sum of the two output currents. When only one side is connected to GND, the current on one side needs to be doubled to activate protection, which should exceed the current that MOSFET can withstand. There should be no problem with a short circuit between OUT+ and OUT-.
Those who have samples can try this operation, maybe it's just this one that has a problem. I dare not do 2OHM sine wave full power test, but those who are brave can try it.
Conditions matter and matter a lot.
Here's a similar failure running NC502MP BTL at 4 Ohm to torture conditions.
Protections did kicked in but amp was destroyed:

 
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