Benson, welcome. No, neither Cerwin-Vegas nor any other speakers will run better at a lower impedance setting on the amp unless it keeps shutting off at the 8 ohm setting. Using a switch or menu setting to set a lower impedance reduces the maximum voltage(the key element in supplying power)which is available to the amps and therefore the maximum current and power(Ohm's law). So, the setting should be kept at 8 ohms except as a last resort if the amp protective circuit would keep shutting it off.


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Enjoy the music, not the equipment.