What am I looking for in the waterfall graph of REW?

[awdtalon21]

Is there anything I should be looking for to show signs of something being off? The waterfall of my 6.5 door looks very different than my 3in mid in the pillar.

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[ciaonzo 5,000+ posts]

Waterfall plot expresses the decay of energy across time (ms) and frequency . The quicker the decay, cleaner the driver. Any peaks that do not die off as quickly are usually a resonance of some sort, stored energy in the cone or a cavity resonance. Things like that.

 

[awdtalon21]

How bad does my door 6.5 look?

 

[ciaonzo 5,000+ posts]

This is what the plots normally look like. You can see that this particular driver has some energy storage around 600-700Hz.

Your noise floor looks high in the plot so, kinda hard to tell.