question about amp n subs

[grnrpr68 0]

whats up guys and gals....i am installing 2 18" fully loaded btls being pushed by 2 us amps md-3d rated at 2000rms @ 1ohm dont think power rating for the question matters but oh well..anyway the question i have is how to run the subs on the amps so i can use 1 bass knob from 1 amp and not have to run both...the amps are multilinkable amps just not for sure how to wire...help out thanks alot