Axiom Home Page Forums General Discussion Stereo HK3480

The 3480 has no built in crossover as far as I know, so you would use the crossover built into the subwoofer. If you want the main speakers to cover the full range you can use the sub out jacks on the 3480... but if your sub has "line out" jacks as well as "line in" you can wire from pre-out on the receiver to line in on the subwoofer, then line out on the sub to power amp in, and the subwoofer's crossover will filter out some of the bass from the signal going to the mains (via the power amp).

Note that the subs which do offer a built in high pass filter and line out jacks normally have a fixed frequency for that filter, so it's important to understand what your sub crossover does before you go any further.