Sorry, I didn't mean to come off so rude. I'm just speaking from experience. You could probably throw in a cheap pair of Emi's like Jack suggested for less than $200 and give the cabs back, and never use them again. Bottom line, you blew somebody else's cabs, and you need to replace the drivers. If they were my cabs, I would demand that they be returned in the same, or better condition than they were loaned out as. If I would have known that they were going to be used for DI Bass, I never would have let you have them. I know times are hard, but you really need to use cabs in the way they were designed to be used. DJ cabs are not sound reinforcement cabs. It's that simple. Anyway, good luck with that. I'd suggest you invest in some PA mains that are designed to take the abuse of general sound reinforcement. You can pick up Yamaha Club series for fairly cheap, or even Carvin cabs, which also use Emminence drivers. Either of those would be leaps and bounds better than those DJ cabs, but still be somewhat affordable. There's always Peavey too. You get what you pay for, but you really need some general sound reinforcement PA cabs. A pair of passive 2-way with 15's would fit your bill perfectly. I'm also curious about the specs on that amp you mentioned. I'm assuming you're not bridging the outputs to mono, so why not state the true RMS output per stereo channel at an 8 ohm load? That's where you need to figure out how to match up a pair of cabs (unless you're loading one channel to 4 ohms or less for mains and using the other for monitors). I like to leave as much headroom on an amp as I can, and prefer to keep the loads at 4 ohms or higher per channel. In other words, run in stereo with one cab per channel. The amp will be less likely to clip, overheat, whatever. Not always possible for $$$ reasons to add another amp, but better for the system overall.