Occurred again today, this time as I was leaving at lunchtime, temp 25.
I decided to root around a little more. At first the high pitch sounds like it is coming from all speakers, and the static from right rear, but it's just acoustics. Moving around and playing with the fade, the problem is actually only with the rears. The front speakers work fine. Both rears are producing the high pitched tone and both are making the staticy scratching noises.
Turning the volume up slightly you will also hear clicks when changing things such as sound mode etc, you are picking up interference from the headunit sending commands to the amp. If you change modes while it is making its grumbling static, it does change the tone of the static along with the soundfield. So the source is before the soundmode DSP. Still not sure if it is the HK amp or headunit.
Sadly after searching and lack of response it seems I'm the only one with this issue. |