Please pardon the stupid newbie question. I just bought a beginner bass & amp package and would like to get a bit more volume than my 15 watt practice amp offers. I also have a large Pioneer stereo speaker cabinet with speakers I am no longer using, rated at 150 watts @ 8 ohms, with a 14" woofer. Is it feasible to buy a head and use the former stereo speaker as the cab, or is this the sort of thing that only someone who knows absolutely nothing about amplifiers would ever consider? To be clear, I am considering just buying a bass head and plugging it straight into the Pioneer speaker if I can find an appropriate adaptor. Thanks for your indulgence.