I was given a rockford fosgate 500x 4 channel amp and the rear 2 channels work fine but the 2 front dont when i hook up the speaker the speaker bottoms out and stays like that until i unhook the speaker can anybody help me?

Yes. Wire the two 2 Ohm speakers in series and connect them to one channel. Connect the 4 Ohm speaker into the other channel. This will give you a balanced 4 Ohm load on each channel.

Question: what starts to smoke, the speaker or the amp? I'm assuming it's the amp. It cant be a fuse because that's what fuses are for to cut the power on an overload or surge. I would have a look at you circuit board for the amp My guess is what you;ll find is a burnt spot on the board and that will tell you what component is bad and needs replacing. Good Luck

if setup 4 channel amp with low pass filter for the sub channel and other 2 channels for speakers with no filter, some amp you can use amp as 3 way if one or two subs, bridging output will give you more power for the sub. be aware that bridging 2x4ohm subs will give you 2 ohms and potentially damage the amp.

is it the proper amp it must be class D amp or bridgeable 2 or 4 channel. how do you have it hooked up?

Hello
Rockford Fosgate P500-2 is capable of delivering 125Watts to 2 channels @ of 4 Ohms speakers, and 250Watts to 2 channels @ of 2 Ohms speakers.

I would bridge down to to 2 ohm mono.

dont put it there

yes u can run a splitter with a four channel amp

Well firstly are you using a parametric crossover with your radio and how much rca cables do you have coming you head unit (car radio) if you going to bridge the front up with you rear speakers u wont be able 2 hear the rear speakers try hookinking it up 2 your head unit's front speaker output and have ur rca cable connected to your amp running on your rear output of your head unit by doing this you can use your fader on your head unit to control your front and rear speakers

Yes they are ! And that means the DC is on the speaker and will for sure damage the speaker if it already hasent