Thank you for the responses and the correction on the terminology. In terms of the soundstage, the Kefs sound great. It is the fact that lower output from the sub doesnt feel as expansive as the rest of the music. If I raised the volume of the sub, though, it then sounds out of balance and you can pinpoint the location of the sub. It is a small sub (8") and that is why I thought a second sub may help the lower end sound more full.
I have space limitations, and can only accommodate a very small sub(s). I purchased the NHT to see if I would like the addition of the sub in the system and it is a convincing yes. The sound benefit is subtle, but noticeable, albeit it doesn't match the soundstage of the Kefs. Other than try the Velodyne MiniVee (plays lower & more powerful). Another option would be two Rel T-Zero subs. The spec is similar to the NHT (38) and the company is known for musical subs. The cost of 2 Rels would approximate the cost of the higher spec Velodyne. Thanks again.
I have space limitations, and can only accommodate a very small sub(s). I purchased the NHT to see if I would like the addition of the sub in the system and it is a convincing yes. The sound benefit is subtle, but noticeable, albeit it doesn't match the soundstage of the Kefs. Other than try the Velodyne MiniVee (plays lower & more powerful). Another option would be two Rel T-Zero subs. The spec is similar to the NHT (38) and the company is known for musical subs. The cost of 2 Rels would approximate the cost of the higher spec Velodyne. Thanks again.