shrill treble

[NELPASTEL]

Hello. I'm running a Helix DSP Mini in my car stereo, which allows me to fine EQ my system, but I've been unable to remove a shrill treble that is present specially at high volume and with some music. It's a really annoying noise that even hurt my ears. My speakers are Focal and my amplifer is Audison, so I don't think it's a matter of quality equipment. Do you think REW can help me solve my problem ? Any suggestions ? Thanks

 

[Wayne A. Pflughaupt]

Post a frequency response graph, it may be helpful in isolating the issue. If so, it'll be easy to address via parametric EQ..

Regards,
Wayne