I'm pretty bad at all this calculating watts/ohms stuff, so feel free to smack me for any stupid mistakes I realize this should be pretty basic stuff, but I just don't get it I'm currently using an Ashdown MAG 115 300w combo (link). This puts out 300w RMS. However, its built-in speaker only puts out about 200w, and to get to the 300w I'd have to hook up an external speaker. Minimum impedance for the speaker outputs is 4 ohms. The thing is: I can buy an Ashdown 410 Cab (link). This is rated at 450w with 8ohms, and I can't get my head around WHAT this will do for my sound. Will this turn into both speakers putting out 150w for the total 300w my combo can provide or is there some funky way to calculate total watts? And if I disconnect my 115, will this allow my 410 to put out 300w?