To lessen the directional qualities of a single speaker on each side, a total of 3 RCAs per side were used. The surrounds are mostly meant to add fill and give the sound a natural "fullness". Adding more speakers to "spread out" the sound helps to obtain the desirable "phantom" effect. After consulting with several professionals it was determined that the SAE power amps would not be able to handle the low ohms of the 3 speakers per channel. So it was off to the amplifier store and a new QSC amp was substitued