Originally Posted by trog69
I have been contemplating trying the 505 with the PB-2000 to see if they played nice together, particularly getting the thump of the 505 without the muddy bass on either side of the hyper-freq. spike. If so, it would be a fun setup for most of the music i like to listen to.
The "problem" right now is that the PB-2000 is more than enough bass. I'm glad to hear that you got them all together successfully. If/when I do attempt to pair them, I'll report on what happens. I see that quite a few people have either the BIC or Polky before upgrading to a more serious sub, but I haven't seen too many comments on the results of pairing them.
The most common advice on these boards as noted above is to not do this, and there are both theoretical and practical problems that can result from employing two different subs. My advice is to try it; there's really nothing to lose and you might be surprised at the results.
For years I've had a first version Paradigm PDR-10 (fabrique au Canada even) that developed a rattle. I assumed it was a goner and purchased a PB-2000 which I'm extremely happy with. After a little research I realized that the PDR-10 probably just had a foam surround failure, which I found to be the case and easily repaired it, thinking I would just use it in another setup. Then I started wondering about this pairing idea and ran across this thread:
Are three inexpensive subs better than one expensive sub-Dr. Earl Geddes Approach
You can cut to the chase in that thread and just search for the gedlee posts, though as I recall there are some other interesting thoughts sprinkled throughout it. I decided to try it and immediately could tell the bass response had smoothed out considerably throughout the entire room. I started running audible frequency sweeps (from YouTube), reversed the polarity and I was frankly pretty happy. Ultimately I purchased a Umik-1, learned to use REW and discovered that not only was I on the right track with the initial impression of smoothing out the bass response, but also that setting my front speaker to full range and using the Onkyo's double-bass smoothed it out even more. Here's a post and some follow up discussion on this and some graphs:
Official SVS Owners/Support Thread.
Bottom line for me is, try it, you have nothing to lose except perhaps some time while you pursue a learning experience. The common wisdom around here is don't mix subs and don't use your front speakers full range. My experience may well be the exception but had I not tried it, I wouldn't have known. I would recommend getting a USB mic and using REW as it will prove invaluable.