Thinking of adding a sub---maybe not?


Looking for some advice. I'm thinking of adding a sub to my system and the one I'm considering is the REL T7. I've had subs (Canton) in the past with my older systems but it's been many years since then. My system today consists of a Luxman 505UXii integrated amp, a Marantz ND 8006 CDP/streamer, Dynaudio S40s and a pair of Tekton Lore Reference--I alternate the S40s and Lores through speaker A/B on the Luxman. My room is about 16 x 25. I love my system but after having subs in the past and getting the bass 'punch' from the subs, I'm debating whether I should go that route again. I've tried the loudness button on the Luxman but it just doesn't give the same results as a sub would IMO. Thanks in advance. 
bluorion
+1 @ricred1 . Subs offer a lot more than just deep bass. I am a Rel fan because they are so easy to integrate plus they use the same signal as the amp sends to the main speakers
Soix rcommended what I would have, two SVS SB-1000 Pros. I own two different REL subs and both are great but more subs is better if they are good quality. Read up on distributed bass array and I'll say, it works.
I now have two SB-2000s and one SB-3000 (all sealed SVS) at 50Hz and 40Hz, and those three are much better than my single, very good REL sub was. I want a fourth...    Good luck!
And, I should have mentioned that these three subs are positioned asymmetrically all over the listening room (behind, sides), not stereo. That is what makes it work smoothly and non-directionally. All my deep bass seems loudspeaker driven; you cannot 'hear' any sub in the room.
Thanks for  the suggestions---I'm going to definitely check out the SVS subs! I had a passive Canton sub back in the day with 2 tiny satellite speakers with my Denon PMA 757 amp. I could shake the dishes in the kitchen in my old house. Fun times! LOL

SVS subs are good at best,stay with Rel especially with 2 channel audio.better sub,better resale...cheers