Do not use double bass. Connect the DefTechs using only the speaker wire (i.e. do not run the "subs" as subs). Then experiment with crossover from the mains to the real subs. Try 40, 60 and 80, choose the one you like best. Lots of folks have complained about those Def Techs, trying to use their bass modules as subs. Once they started using them as just main speakers, they integrated far better with the real subs in the system. I assume that this is due to the crossover of the speaker's internals being well suited to the speaker, whereas the external crossover in the receiver being ill suited for the job. Once you remove that issue, the integration is much easier.
It's a VIRTUAL channel unless stated otherwise.
Last edited by RayGuy; 05-18-2020 at 01:40 PM.