I have a 2 channel pyramid, pushing 2 Rocford Subs. 200 RMS 8 ohm SVC. I had them wired in parrallel and bridged. I wasn't getting much at all, I get a lot more when I wire them in stereo. I thought by setting them up in parallel I could lower the impedence to 4 ohms, therefor being able to push more power. You can totally tell the difference in loudness..
Did you have both speaker wires from both subs hooked up to their respecive bridged channels???? thats confusing um show us a pic of how you had it set up and how you have it set up now maybe?