I have a 03 4runner with jbl10 speakers system I hooked up Peripherals SVENR Premium 2-Channel LOC w/ Remote Turn-On to the right rear door speaker, and made sure the amp crossover on the Rockford is set to lp and still some stereo sound comes out of the subwoofer, I also tried with a eclipse amp and stereo comes out any ideas why there is stereo can the loc not convert the signal right or something??? thanks in advance