You guys have stumbled upon the realities of speaker design. Impedance specs are usually nominal, an average. It is a mathmatical repesentation. Two things are important considerations; 1) impedance generally is lowest at low frequencies and, if too low, can suck up a huge portion of your amp's power. 2) as frequency gets higher impedance increases thus making it more difficult for your amp to drive higher frequencies. to rated output.
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System: ML:5206,5302 Serafino's Nordost Lumin U1 RM15
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