The Phillips FM Tuner was designed for the European format. I believe they used about 16kHz as the top end for the highs on FM. In North America it is I think about 14 kHz, but we also use a FM stereo indicator light, European’s did not. Better sound over fancy features. Stereo indicator light is I believe at a carry wave of 32 kHz, the half wave frequency is 16 kHz. The tuner did not have a filter to deal with this so it played this signal as distortion. Tuner’s designed for North America will not have this problem.

I always heard a very quiet hissing sound on the high when listening to FM radio. Most people said it was in my head as they did not hear it. As this was poor distortion it damaged the Mylar tweeters. Although the hissing sound was fairly quiet it is pure distortion to the tweeters. Being pure distortions the wires that went through the Mylar front got to warm and melted the plastic.

Went through a couple of tweeters figuring this out. Tested integrated amplifier, speakers, tape deck, until someone realized that it was the tuner. Bought a new tuner and never had a problem again. Tweeters do not like distortion! After this the speakers play loud and clear for many years, in fact still have the tweeter just do not know to do with. Maybe I will build some speaker for HT to use them.

I do not believe that this will be a problem.

Have A Great Day, enjoy the music