Matt you are absolutely correct and there is plenty of info available on this subject. Since this test is done with a single frequency at a specified level (1 watt ) at a specific distance
(1 meter) it doesn't really reveal the speakers true identity since the impedance changes with frequency which draws more current as the impedance drops. Pulling more current than the amplifier can supply will clip the signal with varying degrees of change to the music . The only way to know if Boom's receiver will do the job is to wait and see when he gets the new speakers.

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