nordost heimdall speaker cable

If the Heimdalls are brand new, then maybe a little bit more break-in is required. But I own the Heimdall Series 1 interconnects and speaker cables with ARC amplification and Thiel 2.4 speakers (which to some people are bright but with proper amplification they are not) and I have very natural sounding treble performance. So my guess is more break-in required.

What speaker cables did you switch from? It could be that your prior cables may have produced slightly rolled off highs and now you are readjusting to more HF info coming through but again it should not be edgy or cause any strain, it should sound very natural through the Heimdalls. Have you tried tweaking speaker placement and adjusting speaker toe-in?

I agree with Cmalak, I'm also running Nordost Heimdall Series 1 with no edginess. So it may just require a longer break in, or the cables you replaced them with were warmer sounding.

Well I had Nordost Red Dawn the first version and the soundstage was also bigger so I think I will have to plsy the cables a little longer. I had the red dawn for about 11 years.

When I hear a little edge to the highs with my Frey SC I give them a wipe down with Eco3. Any antistatic spray should also work.

It has been my experience that the highs are the last to settle in when changing cables. I would give them a few more days with dynamic music playing 24/7.

Do you have them on supports or near any source of stray EMI/RFI, crossing powercords etc?