Why want my 12" Pioneer Subs play together?

Question

I have a 2000 Chevy Malibu.... I have a DUAL Stereo 220 Watts Max, a Pioneer AMP 760W Max Power (GM-5200T) and 2 - 12" Pioneer Subs... Whenever I hook both of the subs together from the AMP or the Crossover they want play together...However, when I unplug one of them, the other plays just fine... When they are both plug together with the audio jacks they sound really low and the sound is distorted... I was wondering what could be causing this issue? Is it the AMP, stereo, the subs, or maybe a wiring issue...

Thanks In Advance!

Answer 1

one of the subs is out of phase, positive and negative backwards inside the box, just hook one of them up backwards...outside the box...they'll sound just fine then