Tom, sure that's what Axiom and most other sub manufacturers do. It isn't that they don't believe in filtering out the lows to satellites, but the precise way to do this is with variable crossovers present in modern multi-channel receivers. The relatively crude fixed frequency high- pass filter that was present on a fair amount of subs in the past and a very few currently, is certainly better than forcing full-range signals into the mains, but should never be used when a receiver with proper bass management is available.
