As the proud new owner of a SVS 16-46PC I can't help but wonder if there would be any benefit at all to mixing in another smaller PC sub with it? I am enjoying the bass very much I mean VERY much! But I can't help but wonder if I was pinned to my couch by bass if my receiver crossover would send the higher signals to a smaller sub leaving the larger sub free for the lower work. I'm a relative newbie at the home theater stuff in terms of technical aspects. But this same theory is used with the Nvidia graphics cards, they have a processor on the card leaving the PC Processor free for other aspects of the games hence better performance. It seems to me this would be similar but I could very well be wrong as well.