i ave 2 L7's 10" dual 4 ohm voice coil i am gonna be running them with kx 800.2 amp they gonna be in a sealed box. Box is .91 cu.ft my Question is how should i wire my subs parallel or series (2ohm or 8 ohm)

 

The KX 800.2 is only stable into a 4-ohm mono load, or 2-ohm stereo. You can wire each sub to be an 8-ohm driver and then wire them together in parallel to get a 4-ohm combined load. Another option is to run the amp in stereo and wire the speakers for a 2-ohm load. Both of these options will extract all of the power the amp is capable of producing.