As I understand it, subwoofers live shortest. But how short is that, really ?
I am interested in the period during which a subwoofer sounds 'as in the beginning', tonally and dynamically. However you can add any characteristics relevant to the behaviour of subwoofers in time. I am also interested in the factors that lead to subwoofer aging, other than VOLUME, like the material of the cone, the predominant frequencies (very high or very low - for a sub), time of active use or unuse - maybe a ratio of the two, box type and Who knows what else. If certain brands have different reliability records (on similar products), that is significant in choosing one.
I am especially considering common subwoofers, technically as well as 'pricewise'. However, if you have a 10000 $ subwoofer, you can talk about it.