ok, i had a 2 channel crossfire 140watt amp hooked up(bridged) to 1 rockford fosgate 8" sub. It had some pretty good bass. i bought a RF 1500wt 501x 4ch amp.
i hooked it up in 1 channel to my sub, and it sounds like shit.
well, actually it sounds nice but it is WWAAYY quieter than the other...