A year ago I bought a very old but good sounding Trace Elliot 4 x 10' combo, GP7 amp, don't know how many watts. Think I blew up 2 or 3 speakers the last performance (playing with a lot of gain and low). I hear strange "mechanical" noises in 1 speaker at somewhat higher volume and loss of power, and at least 1 speaker isn't moving at all. 2 ideas I ask your comment about: 1/ Putting 4 "heavier" 10' speakers in the combo to prevent blowing up again at high gain and lot of low. (Can you give me an advice about a 10' speaker that handles low without blowing up to easy (4-string Jazz Bass)?) or 2/ New, but identical speakers, but also the assistence of a 200W 15' Trace Elliot cabinet that I can buy from a friend for 200 euro (about the same in US dollars). Will this prevent the 10's to break again, helping the combo with the lows? Is 200W for such a cabinet enough if the combo appears to be 300W? Thanks a lot!