Doing business as…Uhm...just being nosy. But what does DBA stand for?
Yes, most amps have some kind of DC sense that kicks in. My A21 opens a relay.Looking for a class D amp that goes down to DC or thereabouts....
I don't think you are going to find one. The protection circuitry is so good they protect at that from what I am aware of.
I'm of the mind I think 2 Ohm or near is the limit and that's why Purifi is rated 2 Ohm and no more. Zero is just crazy anyway.Yes, most amps have some kind of DC sense that kicks in. My A21 opens a relay.
There are tons of class d amps that are DC coupled.This is for DBA purposes. Are most class D's bandwidth limited to 20?
I'm aware of Purifi at 2 Ohms and no more. Can you elaborate or is this touchy territory? The class D stuff is so new that many people have no knowledge of a DC rating.There are tons of class d amps that are DC coupled.
Or if it will ever exist.. car amps have been doing well with low impedance. Whether that is DC rated I don't know.Just like in the other thread, we don't know if DC coupling is desired, or actual DC output.
Since DC simply means your voice coils are about to melt for no good reason, I have to think most high power amps prevent that.Or if it will ever exist.. car amps have been doing well with low impedance. Whether that is DC rated I don't know.
I would think that is preferable for sure. Plus there is the smoothing of the power supply can it operate with DC and for how long? That requires some grunt.Since DC simply means your voice coils are about to melt for no good reason, I have to think most high power amps prevent that.
The supply won't care, up to the rated power. It outputs DC anyways.I would think that is preferable for sure. Plus there is the smoothing of the power supply can it operate with DC and for how long? That requires some grunt.
Till it drains. It would be fun to make a load for PWM switching power supplies and drain them.The supply won't care, up to the rated power. It outputs DC anyways.
How do you mean, drain them? They don't have real huge output caps, since the switching frequency is high.Till it drains. It would be fun to make a load for PWM switching power supplies and drain them.
Of course. The caps still get drained between charging pulses. Otherwise how would they get loaded down?How do you mean, drain them? They don't have real huge output caps, since the switching frequency is high.
DC coupling means DC in, DC out.I'm aware of Purifi at 2 Ohms and no more. Can you elaborate or is this touchy territory? The class D stuff is so new that many people have no knowledge of a DC rating.
Any examples as it was asked?DC coupling means DC in, DC out.
Short circuit to ground detection is not done based on voltage but on current (too much = SC).
DC is also measured at the output of these amps, not for speaker protection but to diagnose a failure of the output stage where the supply rail would directly go to the speaker. It is considered as a catastrophic failure. So the threshold is quite high (10V if memory serves) to avoid triggering the fail safe protection because these is a bit of DC at the input.