I put WW Silver Electra 5^2 power cords on my JL Audio F113's and did not discern an improvement, BUT (1) my home already has fairly clean power and (2) more importantly, both subs are plugged into non-dedicated 15 amp circuits. I strongly suspect that if the subs were plugged into 20 amp circuits I would hear more of their true potential and that the power cord upgrade might really make itself felt under higher amperage.
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