I have a 1200 max watt amp it's phoenix digital 2 channel. I have 2 pioneer 15's thier 300 RMS 600 max thier dual vioce coil in a sealed box I have a inline Rca a convertor .Question when I hook my amp to them it want come out of secure mode when i bridge it they both come on and sound like crap they vibrate,rattle and not very loud at all. when i hook up just one it is smooth has can be and hits harder than i thought it would i checked both speakers to make sure it wasen't one of those and their both fine do I need a bigger amp any idea's or advice?
P.S. my speakers say 2x4 ohm i talked to sonic sounds they said that meant thier were 8 ohm and spectrum sound said they were 4ohm help