To be less vague . The ICBM can also go in between a receiver and amplifier. The receiver's bass management has to be disabled or setting all channels to large and the crossover to the lowest setting.
This is how I'm configured. It works well for me.


M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM