Hi ric71
With such a large budget the first bit of advice to give is you must try to audition the short list you come to, I see you have the apex system which I think is the satalite system[am I right]??? if this is the case you may find that such an upgrade on the sub side could be a little overkill IMO The paradigm is an excellent sub my other choice would be the Velodyne along with BW these are known to be a high end subs, there are many others out there, but you need to try and narrow your choice only so you dont get trapped in the which one shall I choose club, I would search the web for said subs read the reviews do some research and try to narrow down which models would suit your needs, go onto velodynes and paradigm sites look at the specs then follow the links to reviews this is wide and varied so will give some guidence, most reviews will say what the subs are running with along with size of room etc, you find that most good dealers will have these subs on dem from small compact air shifters to big wholesome house movers, an important aspsect to remember is that big is not always better not the way some subs are built today, subs seem to get smaller and smaller but can still shift air in big rooms, BUT it is the quality of build that is important, amplification, sealed, ported, power, etc. With this sort of money I would really try to audition as many of the obove subs as you can But with your speaker system [I dont mean take them you] 7Oaks sound and vision are well known dealers that carry Apex and Velodyne. Depending where you live of course you may have other dealers that can help you, but you must Dem, the only concern I have as I said earlier is that if you dem an expensive sub it could the dominating factor with such small speakers, many will say that bigger and powerfull is better, but it must intergrate with the speakers its working with, is it musical [if this is important to you]Anyway I have woffled on long enough, I think you get the picture, do your home work, DEM DEM DEM, Enjoy it as well. 2500 will get you some thing very special, But so will 1500, if you are going to keep the Apexs get a sub that will work with them not overwhelm them.
Crickey that was a long answer...just dont want you to waste such a lot of money. :clap: :clap:
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