Subwoofers won't work and they are brand new

It should tell you on the back of the sub ,The continus watts it will handle, If not phone the place you got it from, Or some place that sells them,

This site well be helpful for you to configure the connections
http://www.the12volt.com/caraudio/boxes.asp

I would hook up the subs in parallel set up. Lower the resistance causes the amp to create more power to the amp. Your amp can handle 2 ohm load so from my stand point it is best to set up this way. Here is the link that displays how to set up subs:

http://www.crutchfield.com/S-cgSECUmngLm/learn/learningcenter/car/subwoofers_wiring.html

Usually a power rating is a power rating, 1000watt rating is a thousand watt rating. The amp will put out 900 watts at 2 ohms.

You cant bridge it to the MONO AMP . You can only bridge subs & speakers to 2 CH & 4 CH AMPS that are bridgeable. Because if it appears that there is 2 channels on a Mono amp its so its convenient for you to hook up 2 4ohm subs to it easily But both channels are actually connect internally together in parallel inside the amp unlike a 2 channel they are separate.

So just connect your mtx 9500 to a plus and a minus and doesnt matter which since all the + terminals of are connected together and - are connected together already.

Whats important is on the side of the sub/box it reads 2 ohms. The lower the ohms the more power the Mono amp will put out. Mono amps are designed to handle 2ohm loads.

If it reads 4ohms The MONO amp is the wrong amp to use cause the power will be weaker. So if you have a 1000 Watt Mono amp at 4ohms the sub will only get 500 WATTS Max while a 2 ohm will get the full 1000 Watts.

If it reads 4 ohms connect it to a 2CHANNEL AMP and BRIDGE IT (connect + of the sub to 1st channels positive of the amp then connect - of the sub to 2nd channels negative of the amp) . The power will be doubled when you bridge it on a 2 channel amp. NOW if it was a 2 ohm sub and you bridged it to the 2 channel amp it will fry the subs and ruin the amp. 2 CHANNELS CANT TAKE A 2OHM LOAD BRIDGED OK.

Is there a option on the chanels that say ''Bridged''? If so, you can hook the subs up in parellel or series to get different ohm loads. Usually the lower ohms, the more power amp puts out. Those subs can handle 225 watts RMS whitch means the power it can handle constantly. If the amp gives more than 225 watts RMs, you could be at risk of blowing the sub. If you could give me the model # of the amp, I can be of more help.

first of all you should check the minimal impedance your amp handles , if is class d it should handle between 1-2 ohms total impedance in a mono conection , meaning whatever quantity of subs you have hooked to your amplifier,their total impedance should the minimum the amp handles that way all the power from your amplifier will be used.

They probally would, but i just found that sub for 51.00 im sure it would cost that and more to have.it fixed

This is a dual 4 ohm sub. By wiring the terminals in series (one set of + to - from one side to the other) you will have an 8 ohm sub (most folks probably don't want this). By wiring in parallel (+ to + and - to - and connect the - wire to the - terminal on your amp and the + wire to the + terminal on your amp you'll have a 2 ohm sub.

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_aad3edb7dfa380b9

yes you could go with a 2 channel. You could alwayse bridge it.