Yeah, John; since the Mod 2 Orbs are formed by using two Mod 1s in parallel, the resulting impedance is about 4 ohms and is similar to the M80s in that respect. As was pointed out, the 8 ohm receiver setting is still the appropriate one, not the lower setting which reduces voltage and in turn reduces current and power to help prevent overheating.

The Orbs are very small and do distort at higher sound levels(even if a 150Hz crossover is used)which the M80s can handle cleanly.

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Enjoy the music, not the equipment.