do subs match amp?

I have 2 mtx road thunder 4000 10" subs in a ported box, they have a peek of 400 watts and 200 RMS matched with a pioneer gm-x860 760 watt peak power 2 channel amp which I believe runs at 125x2 RMS or 380x1RMS.

1)Is this a descent match?

2)Does anyone have any setup recomendations?

Any reply would be helpful TNX!!!

A gain is designed to be turned down, not up. If once you have your system tuned and playing and you find that you want it louder, get yourself a bigger amp. One of the worst things to do to a sub is to underpower them, this causes the amp to clip (distort from running out of power - similar to running your engine above redline). The speaker will do it's job and reproduce the distortion. Stephen is correct with the smaller enclosure solution, the subs will take more than their rated power, the tradeoff however can be heard in the response of the sub, generally speaking only, the sub will become tighter, hitting harder, but lacking in depth. Conversly a bigger box will cause the power handling to go down on the same sub to the "normal" sustaained capabilities of the sub while increasing depth but sometimes lacking the "impact" that you desire. This impact with the larger box can be gained by using a larger amplifier that is a close match to the subs. If you miss on matching together the sub - box - amplifier, get ready for box experimentation. The box is the final factor in how that sub is going to sound.

A simple way to set your gains is as follows.

(1) turn gain all the way down - set bass / treble on cd player to normal (or eq to defeat)

(2) find yourself a particularily bass heavy track and use this track over and over again when testing.

(3) depending on your cd player, you should be able to turn it up to about 85% of it's volume capability. One thing to watch here is for distortion out of the smaller speakers. If the smaller speakers are distorting, turn the volume down until the speakers are playing nice and clean. This is your maximum volume level for this type of music. You may be able to play up a little bit depending on the cd.

(4) adjust gain upwards on the amp until it is either drowning out the speakers or until distortion is heard from the sub. When you hit this level, back the volume down. Adjust the crossover (if applicable) on the amp to suit the music you are playing and the vehicle. You will find that as you adjust the crossover you can adjust the gain as well.

(5) If it not loud enough, get a bigger amp for the subs, add another sub, amplify the front / rear speakers and enjoy.