...okay, so I picked up a new-to-me Yamaha 2x10 cab. I think it's a BBT210S? Anyway, 2 tens (obviously), a tweeter, an L-pad, front ports, and GREAT TONE. Cost me 225 (listed at 275, but the manager stepped in to give me a deal), rated at 250w at 4 ohms. One problem... the thing is pretty heavy. And, honestly, I wouldn't mind a couple more watts, although I'm fairly happy with the whole 4-ohm thing. So here's my question - can I drop in a pair of new tens (probably high-wattage neos) without worrying too much about the tone or functionality of the cab? (The problems inherent in cab design have been drilled into me in other threads - I guess I'm basically asking if drivers are usually similar enough for me to not have to worry about it.) Also, if I wire two 4-ohm drivers in parallel, the cab will show 4-ohms total impedance, right? And I realize that cabs are probably all different, but in general, how should I be planning to wire the tweeter in? (Or should I pork the sucker right out, seeing as I'm a big fan of the P-bass-with-flats-and-tone-rolled-completely-off tone anyway?) I haven't opened up the cab yet, and don't plan to until the money for the drivers comes free, but when I get around to it, I'll be sure to post pictures so that detailed and specific advice can be given (thanks in advance!). However, in the meantime, what do you say?