[superchad]

Specs need to be known for "large" or "small" large means your speakers are capable of at or very near 20HZ bass response......small for anything else. If your Denon is newer you should be able to set sub roll off from anwhere between 20, 40, 60, 80. 100, 120 HZ possibly up to 150HZ but most look to roll off at 80HZ which is "THX" standard so ofocurse you need to make sure your speakers atleast responf that low if lower you can change accordingly if you wish but 80 will probably be best for a recievers power...on the same token you can set crossover higher at say 100HZ or so if you have very small speakers.
The info below this established and set number will all go to sub-woofers save for any that are capable and correctly set to large. Should you feel the need contact me with PM and I will help anyway I can, maybe even a phone call if you wish. Cheers