You say you've had the problem with the speakers since new. Just how new are they? I ask this because my Clearwave Duet 6 monitors took a long time to break in and had similar sounding highs to what you describe. All is well now.
What helped to break them in was playing the Ayre Irrational but Efficacaious CD Enhancement Disc. Using glide tone sweeps, pink, white and brown noise, in mono and in and out of phase, it will quickly break in components. All components. I was surprised at how different my system sounded after playing it. Hope that helps.
All the best,
Nonoise
What helped to break them in was playing the Ayre Irrational but Efficacaious CD Enhancement Disc. Using glide tone sweeps, pink, white and brown noise, in mono and in and out of phase, it will quickly break in components. All components. I was surprised at how different my system sounded after playing it. Hope that helps.
All the best,
Nonoise