>this< means: ....achieve
1st: the bass reproduction a 2nd and eventually (as I have it) 3rd pair of speakers only can do...and
2nd: bass reproduction in time/in line with the stereo pair
both in conjunction with the processor Denon S760H.
This 2nd bass reproduction system is mainly for music, not for HT. But you can use it as well for it. Brings in both cases the beef to the sound.
You need to manage that 2nd bass reproduction system entirely by center channel signal which needs to be send by Y-cable to two dedicated amps. The HT-amp is switched off while listening music in the 3-channel stereo mode of processor. While watching HT all is normal, signal routing as usual using the other amp.
Delay requirements of that 2nd bass reproduction system you manage by minidsp2x4HD.
Cheers