does this sound right to you guys?
PS I also have 2 PB 3000 subs they said set at 120 hz an LFE + main in the settings
Theoretically, what he told you would be correct. In theory, the def techs are "full-range" but in practice they're not, they merely have active woofers (they're not really "subwoofers" in terms of extension, linearity, or dynamic range) that pale in comparison to your highly capable subs. So, in practice you should set the speakers to small and implement bass management.
That makes for a gain matching mess, as you not only have to dial in your sub's gain level, but also the gain level of the powered woofers on the def techs, but that's not an insurmountable hurdle. I would address the speaker's gain first (Omnimic, REW, or even just an spl meter can assist with this, but don't sweat it too much if you have to use your ears and Victor Wooten tracks), and only after you do that, then work on integrating the subs (for which you can run Audyssey or whatever your AVR offers). Route lfe to the subs, not the def techs.
