Do I need a subwoofer? Which brand and model?


I mainly listen to classical and jazz - mostly trumpets and violins, with the occasional piano, viola or bass guitar. A couple of my friends have been suggesting to me that my ensemble lacks bass and having a subwoofer will address it. My setup includes a 2 ch. NAD C365BEE integrated amp, Wharfdale EVO 50 loudspeakers (pair), and an Oppo BDP 105 Bluray player as a CD player. The setup is in the living room, with three walls, and the fourth side open to the dining room. The living room itself would have been 18' L X 12' W X 18' H = 3888 cu. ft, but the fact that it opens up to the dining room makes the entire space more like 40' L X 18' W X 12' = 8540 cu. ft. Would I benefit from a subwoofer and which one should I get? Budget $1000 or close to that.
shugho
Thank you Lloyd. I will try a more powerful amp if I can get one. Good suggestion and thanks for the detailed explanation on the physics.

Marty, I have researched the brands you suggested. My options are a pair of SVS SB1000, a single SVS SB2000, a single Hsu VTF 15H or ULS 15, or a single Rhythmik F12.

The Hsu VTF 15H or ULS 15 are the best deals at the moment - a Black Friday special.

I would rather buy a single higher end now and add one more later.

Please let me know which one you think fits my need the best - my needs are musical rather than movies.
Lloyd, When you suggest a more powerful amp, what level of power should I consider? My NAD 365BEE is 80W per channel. I could consider something like an Anthem integrated amp at 225W per channel. Should I consider other brands or wattage as well? My spend comfort is around 2K. Thanks again!
I have OPPO BDP-105 , I think you will be happy with HSU-VTF15H. I am very happy with this.
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Hi there.

1. Agree to buy quality now and 'double up' later if you wish.
2. I would think if you are able to get a powered sub, that will allow you to try to blend the 2 speakers using the crossover...or run them in parallel. I have played with Celestions and SF Guraneris and subs...and eventually found that running in parallel seemed to work for me despite its own imperfections due to the extension of the satellites.
3. If you are going to try an amp...i always like trying a brand whose sound i like...and go a bit higher up the chain just to see if the effect you are looking for is possible...and then back down into the price range. Because if the bigger models still cannot deliver what you want...then you've saved yourself a lot of time trying to audition a particular model(s) seriously. Parasound, Bryston's newer stuff, NAD make good stuff.
4. Between HSU and SVS, hard to say. I think both have good reputations. SVS is known (i think) for tremendous bass power/$. But a lot of people with music only systems stick with HSU as well. Gut tells me the ease/flexibility of setup will matter more here, and there you are going to have to investiate the speicific models in your price range and see which one allows better setup options.
5. Finally, regardless of which sub you go (or amp), if you can isolate the sub from the floor...i often find it makes a big difference (usually a good one) in terms of deliver clean bass that is not being 'echoed' by a wooden or vibrating floor.

hope that helps...keep asking if you have any other questions...