Subwoofer to match Vienna Acoustics Bach


I recently purchased a pair of Vienna Bachs. Currently I have a Harman Kardon amp/tuner..I listen to a variety of music, but also use this setup for home theatre. I am wondering what type / model subwoofer would be a good fit with the Bachs to compensate for the low frequency effects needed for many movies (in the $500-1000 price range).

Any ideas would be much appreciated.
kapa311
Try the James EMB-1000 Very musical and it's very Fast.
This Sub has rave reviews,go on the James website and check it out.
This is one sleeper Sub,I don't think they do much advertising.
Thanks for all the useful options. I ended up with the James sub, which has proven to be excellent for music and movies.