Hi, I have a Focal Solid 4 AMP, JBL GTO 938 100w RMS rear speakers and Pioneer TS-WX301 800W - 150 W RMS sub. The radio is radio PIONEER DEH-2300UB The Amp is 4 channel. I connected the sub in bridge mode (rear 3-4 channel), the rear speakers on the 1-2 channel (front). The problem is that the sub is working great, but the speakers aren't. I have no clue, i tried to connect the speakers on the 3-4 channel, but they still aren't working. Actually I hear some music but i think they are acting like a sub not like speakers...... Could anyone help??