Ok, so I got myself 2 of these EDEN 210XST cabs rated at 500 watts each at 4 ohms... I borrowed an EDEN WT-550 to use with the cabs this weekend and was SORELY DISAPPOINTED Firstly, with one cab running at 4 ohms, the eden head which is supposed to put out 500+ watts (seems about right 4 one of the 500 watt cabs right?) - running the preamp so that the light just flashes with the hardest playing, the power amp would clip as only half its volume!!! nothing I could do would stop this? Secondly, the 500 watts that the WT-550 head put out seemed hardly enough to even get the cab out of bed (my Fender Rumble 100 wal louder)!? how much power do these cabs need before they get excited? I've gotta power 2 of theses babies!