I use also AKG K55, cheap and ugly, but they have enormous bass, and flat enough to discover problems that bother you in a difficult room acoustic.
the analyzer needs a bigger FFT window than usual in real-time, at least 8192, better 16k or 24k points. beware not to cancel the actual bass notes (e.g. the typical peak around 80 hz in traditional rock
)
I watch the rt display and listen, so I see where the particular sounds are, then do a FFT through the whole song to get an idea of the whole balance.
the analyzer can help to find serious problems, but when it looks right (does it ever?!) still the ears can find much more detail and judgement. so it is a technical tool, not a musical one.
to me a slow 30band graph is of no use at all. I like the full detail.