Your intended use makes my simple stereo high/low pass look a little pedestrian! I don't know if there is any other product that could do what the ICBM is going to do for you in that set up. Maybe something on the pro audio product... When you get it all hooked up you will certainly be able to rock (pun intended) your whole house! Let me know how it turns out.
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AvFan
Outlaw 976 | ATI 2005 | M&K 850s Left, Center & Right, Surround-55s, MX-70B Sub | Harmony 950 remote | Panamax 5100 | OPPO UDP-203 | LG OLED55B7