Adrian, that would depend on how much efficiency in the use of available amplifier power was gained by removing or bypassing the internal speaker crossovers and instead applying external electronic crossovers before the amplifiers. It's possible that the 75 watt amplifiers would be able to supply the speakers with more maximum power than would the 125 watt amplifier, and if this additional power was actually needed at a particular instant, the peak would be played more cleanly.

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Enjoy the music, not the equipment.