This results in not being able to observe the sub through the crossover, which is something you really want to see. The crossover affects the level of the sub as the frequency increases. Peaks near or above can be greatly reduced (and perhaps ignored) as a result. You need to see this. Run REW through the receiver with the mains off.I ran a cord direct from my htpc to sub
A lot more than a peak at 25Hz would be affecting the music. There is very little content at 25Hz in music.My main concern is the boominess/muddiness in music. Do you think the 60Hz peak is what's doing that?