I just bought the H/K AVR 525 and although I am happy with the sound overall the Triple Crossover doesn't seem to work as advertised to me... There are settings for the mains, center, surrounds and sub frequencies. I set the mains to 60 HZ and the center and surrounds to 80Hz. There is no mention of the sub setting in the manual, but I found an insert on the H/K web page saying to set the sub setting at least as high as the speakers highest setting (in this case 80 HZ) or else there will be a gap for that speaker set. To me, I read this as set the sub setting to the highest frequency the sub can go. I set the sub frequency to 120Hz. Now on all channels the bass begins at 120Hz and is doubled until the crossover setting for that speaker! If I set the crossover setting to 80Hz, there is no double bass on the center and surrounds, but the mains have double bass from 60 to 80Hz! If I set the sub to 60 Hz, the center and mains have a gap from 60 to 80Hz! Is this the way the triple crossover is supposed to work!!! Please reply, so I know if my receiver is broken or not! Thanks!