Am I reading the wiring diagram right for this HU, It says NOT to connect more than 1 spkr. to one set of spkr leads. Does this mean I can't wire 2 spkrs in paralell for the front, and the same for the rear? I'm using an amp anyway, but will this HU allow me to connect 4 4ohm spkrs (1pr front and 1pr rear)from the amp? The HU only has 1-rear RCA jack, and 1-front RCA jack. I'll be using a 2 channel 800watt amplifier, with 100rms x 4 @4ohms?