I had N801's and now have Signature 800's. I use a JL Audio F113 subwoofer. Word on the street is that it is much better than the B&W sub. I love it. Extremely tight bass and blends well with the mains.
In my experience an upgrade to the bigger B&W will probably not give you the increase that you are looking for. Take that with a grain of salt as I have a very large room. At the same time, I do not listen very loud (maybe 75 to 85 db at the most). After adjustment, the sub blends in nicely and adds some warmth.
In my experience an upgrade to the bigger B&W will probably not give you the increase that you are looking for. Take that with a grain of salt as I have a very large room. At the same time, I do not listen very loud (maybe 75 to 85 db at the most). After adjustment, the sub blends in nicely and adds some warmth.