What is a recommended software/technique combination to do spectral analysis of an electric bass guitar?

If these basses indeed have little fundamental content as theorized elsewhere, cutting a 31-band EQ below 82 Hz should have little audible effect on the produced sound. Mine don't work this way, and cutting this EQ range cuts the bottom off the sound.

I'd like to determine how much fundamental vs secondary harmonic content is present in different bass and string combinations.

The results will determine if I need response down to 41 Hz or only 82 Hz in a live performance bass cab/horn.

I own some high quality Burr-Brown mic preamps (Rane) as well as a Mackie 24.4 VLZ Pro console, to use for inputs. I suspect the Rane is much higher clarity.

I'm more concerned about software required to do an accurate comparison of various basses. I have TrueRTA, but have only dinked with it once or twice. Unfortunately, I have no access to an o-scope.

All I want to see, is the level of fundamental vs 2nd, 3rd, 4th harmonics when plucking a given note.

It will show both a waveform, which is not that useful, and a bargraph showing the relative level of each overtone.

As a saxophonist I was surprised to find that the saxophone's second overtone was nearly as strong, sometimes stronger than the fundamental, yet we still identify the fundamental by ear as "the pitch." We don't confuse it with the the second overtone an octave higher.

This software is to be marketed for the analysis of timber, or tone quality... to identify the actual differences in the tones of various instruments, mouthpieces, reeds and players.

Feel free to contact me at tenorman1952@yahoo.com