Originally Posted by mir3acles
I have noticed that I get more bass coming out of the 4k ULF from the right side rather than the front of the sub. Is that normal or a placement issue. Both right/left and front sides are open to the room with just a wall behind the sub.
Since your post hasn't been answered, I'll give it a try. I'm not sure what you mean when you say that more bass seems to be coming from the right side of the sub? Are you saying that if you get up very close to the sub, more bass seems to come from the right side of the cabinet, or are you saying that from your MLP, more bass seems to come from the side of the room where the Cap 4000 is located?
You may need to offer more information to get a definitive answer, but I'm going to assume that you are talking about hearing more bass from the right side of the room, where the sub is located. Some people seem to be more susceptible to bass localization than others, and that's really what you are describing if you hear more bass on one side of the room.
Bass localization is awareness of directionality in low-bass sounds, and/or sensations, and most people can prevent most localization with the use of 80Hz crossovers. In a perfect world, you wouldn't be able to tell exactly where the bass was coming from. It would simply supplement the bass coming from the speakers, and would seem to either come from the same direction as the higher bass frequencies (primarily played by your entire front soundstage) or it would seem to come from everywhere.
That really doesn't work for me with some low-bass content. I can identify directionality in bass below 80Hz, perhaps partly due to low-bass TR, which is one reason why I have multiple subs spaced around my room. Whether this is something that you can resolve by experimenting with a more central subwoofer placement (or lower crossovers), or whether you will need more than one subwoofer to resolve it, is a question that only you can answer.
If what you are describing is not bass localization, but a specific issue with sound coming from the side of the cabinet at close range, then you will need to contact Jeff for specific advice. I hope this helps!