Old thread I know. I'm currently running 2 pairs of AR speakers(3 and 3a) both 4ohm. My amp, a McIntosh MC2300 has 2 ohm taps which is what I'm using. They sound very good this way, but since the amp also has 1 and .5 ohm taps, and since the AR's can dip below 4 ohm's each, wonder if it would be better sounding to use one of the lower ohm taps. Assuming there is no danger in doing so. Thanks.