I have two Vandersteen 2Wq subs with a pair of Duntech Princess speakers with the subs positioned behind the main speakers. They are 10 inches from the side wall and 21 inches out from the back wall and the sound is great. If I disconnect one of the subs, the impact and fullness of the sound collapses to some degree. CDs have base in both channels whereas vinyl usually sums the bass from 30-40hz down.I would definitely go with two.
Two Subs Vs. One
Trying to augment the sound from a pair of Totem Hawks in a large room (rest of system is an Olive Musica server, Eastern Electric Minimax Pre, Classe CAP-150 Amp). I am doing some in-home auditions of affordable single subs (mostly REL) and really like what they do for the sound. So far, I am leaning toward two smaller subs, one behind each speaker (ie. REL Q108E's - I like the sound better in that position and it looks better - wife factor) versus one larger one in the corner (ie. REL R-205). Can't find two demo units of the same sub to audition the two-sub option and was wondering if anyone had experience with this comparison.