Not satellite speakers ala little cubes or anything, the discrete satellite channels in a surround mix, ie front left, front right, center, surround left, surround right, as opposed to the subwoofer channel. As per the chart on the Audyssey website, base 2EQ does nothing with the subwoofer output, but applies correction to the satellite channels with "X" amount of resolution (I believe it's on the order of a couple dozen FIR filters per channel, but could be mistaken). MultEQ applies filters with twice the resolution of 2EQ to the satellite channels, and filters with 128X the resolution to the subwoofer. Bumping up to XT you get 16X resolution on the satellite channels, and the same resolution as MultEQ on the subwoofer channel. Then there is XT32 which applies 512X filters on the satellite channels and the subwoofer channel.