Casey, keep in mind the additive nature of having more speakers playing(not necessarily the same sounds)simultaneously. For example, if one speaker is playing at 80dB ans a second one is added at 80dB, the net is 83dB, and if two more are added at 80dB, the net is 86dB. Likewise, if the level of each of the four speakers was reduced to 74dB, the end result would be the original 80dB level from the one speaker.

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Enjoy the music, not the equipment.