I need help urgently, I just picked up one of these Trace Elliot Commando Combos pretty cheap and the speaker is starting to rattle at higher volumes, Im using a passive J bass. Well I want to get a replacement speaker but I am not sure of the ohms on this combo. Does anyone know the ohms for this combo? I tried the site and writing to the company to no avail. I did see on the site though that the model below this one (the 10", 60 watt model) is 8 ohms, But I am still not sure about this particular model. PLEASE HELP!!!!! Thanks in advance for the help!