I'm running a Denon AVR as well. You should be able to change the crossover for each set of speakers. I know there is a setting that sets all speakers to the same crossover frequency. Make sure that setting is not on. I have my front towers to large also.
Last edited by CanesFanInVA; 04/06/2106:40 PM.
LFR1100 VP180HP EP600 M3 In Ceiling x 4 M5OW M2 - Atmos rears ADA1500.5 M3 Outdoor Speakers ADA 1000.8