id8 is a SUBWOOFER, similar to how the elemental designs EU-700 is a SUBWOOFER, NOT a midbass.
the IDQ8 is an 8" midbass woofer with extension up to, and above 1khz and down below 50hz. they are medium sized, and to me - that was\is their only drawback, if they utilized a neo magnet, and possibly an inversed motor or somthing, they might be way more practical for more installations.
supposed to be an awesome 2-way fronstage (or 3 way for that matter)