those 2 arent the exact same sub, so how can the cadence be the same as 2 different subs?the zrs1000 series are basically the same sub as a dd3500
their daytona series are the same exact sub as hdc3 and 9500
the zrs800 is the dd2500 or aq 2.5 their all from same buildhouse.
same build house its all a name stamped on, get over it, same thing with crescendo and sundown 3k ampsHDC3 does not = DD9500.
HDC3 = cheaper wanna be copy of DD9500.
Cadence = Copied Konaki/AQ, who copied DD.