TOPIC:

Dear community
All four (i have two PWR-ICE 125 and two PWR-ICE 250) of my PWR´s have an output of ca. 500kHz and about 500mV measured with an oscilloscope.
I think this is the the triangle square (or saw tooth) pulse generator of the ice power class D module. But i thought there is a low pass filter before the speaker outputs ? Regardless of any Input (or no Input all) there is always this ca. 500 kHz signal.
Two questions:
This means the all speakers will be loaded at any time with this signal. Will be there any problems with magnetostatic or electrostatic tweeters ?
Is it possible to built a low pass filter to stop this signal from the speakers output?
Or all of my four PWR´s are damaged?
Thanks for helping
Thomas
P.S. in principle all four PWR working perfect.

That's perfectly normal for this type of amplifier.
You could filter the output further if you like......but I don't think it's necessary.

Dave.

how would you go about filtering this 500khz signal before the speaker but after the amp???

A small capacitor in parallel with the tweeter.
But anyway, this HF signal should not be a problem : your tweeter (or any HP) behaves itself as a lowpass filter and the membrane does not move at all with such a high frequency