I know a lot about HiFi except I have not much experience with subs. I got a second hand KEF that I need help with. How can I best integrate a KEF PSW2000 sub with my Mission 77 speakers? My 773e's frequency range is 50Hz-20kHz, yet the crossover on the KEF has a range of 80Hz-120Hz (it goes down to 35Hz). Am I right in assuming the best crossover point is 80Hz to make the integration as seamless as possible? Because my fronts go down to 50Hz should I set the bass management on my decoder to have the fronts as 'small' as ideally I am thinking that the fronts should cut off at 80Hz, the crossover of the sub? Help please.