- Mar 1, 2016
- Albany Western Australia
Yes you are correct. However a tweeters impedance rises with frequency. An 8 Ohm tweeter at 1kHz may well be 60 ohms at 450KHz. I did do an example calculation with real tweeter somewhere here, I will try and find it. Then you have the crossover in front of the tweeter that will increase this impedance further.I get that tweeters - as far as I am aware - have no response at that frequency, but isn’t there energy there that must be dissipated somewhere, like in the tweeter? Would this cause some heating of the voicecoil or some component in the system?
The residual of the switching signal in hypex designs about 350mV, so what current that ends up flowing in the tweeter and therefore power dissipated is totally insignificant. You are talking about a few mW. I think @SIY measured 1mW recently.
The tweeter frying class d amp is a myth.