I think you are right about them being 1 ohm, from what I've read so far in searching. A lot of people are saying 2 ohm, but I don't think that's right. Also, some have stated that Bose speakers have VARIABLE impedance. Hmmm. It may be that they are rated 1.5 but the variable moves it around. Just doing a cold test I tested one at .7 ohm...but who knows...maybe the multimeter or maybe it's partially shorted. Que se yo.