Bookshelf speakers-double up,kef ls 50

Hi Bob,Im running class A gear.Iam a novice to subwoofers.Ideally I would like more of the good stuff for a 2 channel set up.Can you recommend me something,thanks.Do you think I may need 2 to fill the room up with sound

Since you're moving to a larger room I'd consider dual subwoofers, maybe something like the SVS SB13 that is excellent and you can get a great deal if you buy two. Integrated properly I think that combination with your KEFs could potentially leave many a jaw dropping to the ground in disbelief. The key will be integrating the subs, which can be tricky and potentially expensive depending on how far you go with it. Best of luck and let us know how it goes. I'm thinking of doing something like this myself.

Oops. Sorry, I meant SVS SB12s that go for $1149 per pair. The SB13s are over twice the price. My bad.

Good Good,Yes I have 2 pre outs on my Ar ref 5 linestage,I prefer balanced.There seems to be some well reviewed subs around,but Ive never owned one with small speakers.Thankyou for your good suggestions.I'll get in there,and see how these ls50 sound, and go from there.My other speakers, Im yet to sell,take 2 people each to lift,so im down sizing you could say.