Johnnyb53...With automatic room equalization readily available (Behringer DEQ2496 for example) there is no such thing as a "secret" equalization curve.
As I have described in another posting I have Bose 901 speakers in my HUGE swimming pool room, where, contrary to all audiophile opinion, they sound good. I use a Behringer DEQ2496 instead of the Bose-supplied equalizer, and this makes a significant improvement. The required equalization for the 901s is extreme, and the digital DSP in the Behringer can handle it better than the analog circuit of the Bose equalizer.
As I have described in another posting I have Bose 901 speakers in my HUGE swimming pool room, where, contrary to all audiophile opinion, they sound good. I use a Behringer DEQ2496 instead of the Bose-supplied equalizer, and this makes a significant improvement. The required equalization for the 901s is extreme, and the digital DSP in the Behringer can handle it better than the analog circuit of the Bose equalizer.