Disclaimer: I'm not a (real) bassist. My bassist has been using my Acoustic 220 amp & 406 cab at my basement studio for practices and has managed to blow the bottom speaker, as he is known to do. I'm looking for a decent but inexpensive replacement. Maybe something with more wattage so he doesn't blow them? I'm thinking an Eminence Delta 15a? So I took the offending speaker out to measure the ohmage, it's an Eminence Beta 15. Someone wrote "350 watts, 8 ohms" on it in magic marker. When I measured the ohms with my DMM it read around 4. Is that because the wires are still hooked up to the other speaker? The ohm reading for the speaker cable coming out of the jack is about 14 ohms so I am confused. It should be two 8 ohm speakers in series for 16 ohms, I guess. I thought the cab was supposed to be 8 ohms. Which ohm rating should I get for the new speaker?