Samsung max-wb630

[kajaalyo]

Hy, i recived Samsung MAX-WB630 radio, with broken circuit for headphone jack and cold joint on relay (for triggering subwoofer amp on) on the amplifier circuit board. I resoldered relay joints and jumped 2 wires on headphone jack connector, so that the amp can turn on.
I connected my ectasy 300w sub and 2 Pioneer 110w 6ohm speakers.
Subwoofer sound great, but i wish i could say the same for my Pioneers.

There is ugly sound coming from my Pioneers -high tones sounds terrible, they are some sort of screaming. Like they would be slightly burned. I didnt find anything other unusual on the PCBs.
Is the problem that Sony is rated at 4ohms and speakers are 6ohms?

What else could be the problem?
Thanks

[kajaalyo]

Re: Samsung max-wb630

Hy again, i realized that on low volume -like 7 of 30(max) it plays good, but it sounds like there is too much high tone. Speech also sounds good (when watching a movie).
Just to let you know in case if this helps