Back in the last century, when everybody used phonographs and stereo
speakers, I was able to test and calibrate my equipment with a record that
played sweep tones across many small areas of the audio spectrum, and let me
compare it to a mid-range reference frequency. I used a stereo graphic
equalizer to keep response relatively flat for most of my music. . .tweaking
when in the mood.

In today's world of Dolby 7.1 DVDs and CDs is there a similar DVD or CD
known to anyone in this group that would let me calibrate my system in a
similar way?

What's available in multi-channel equalizers?

Thanks,
Ed