Sorry to not make my point clear, clearer, more clear (pick one). Is there anything inherently wrong with PEQ'ing a system to match hearing loss? Phase shifts come to mind, but is that a fair trade? I think so. As you can tell, I'm not taking this avenue lightly. Almost everyone with a stereo system is in the same boat if I am right. I'm sure most are over 30 and all have some dimished hearing. And those that do a frequency sweep and testify that he can hear to only 15K says nothing about the losses below that frequency. It will be on a decreasing slope. I heard someone on a forum say he can detect less than 1dB change in his system, yet his hearing could be 5dB or more down. Same guy might try to get his system flat to +- 1.5dB. Who is he or manufacturers making the speaker for, a 20 year old? Makes no sense. Zene