Hey there. I don't know the most about amplifiers as I've always used combo amps for simplicity. I'm still researching amp heads and speaker cabs before I make the jump away from combos. In the mean time I was curious about powered cabs. I know a combo cannot power a passive cab without a Speaker Out...which my combo doesn't have. I have a line out though. Would lining out into a powered cab though give me a weak sound ? Would using the line out from my 2x7" 100w combo into a 1x12" 300w powered cab work well? Would I get full use of the powered cab? And lastly, would I have to worry about ohms or anything else? Thanks for your help.