You are right. All you need to do is to remove the jumper on the speaker and connect one amp to the highs (presumably the tube one) and one amp for the lows. You will need to "Y" the output of the processor to the input of the two amps. Remember, you may (probably will) have to balance the output of the two amps, but this can be done by ear, especially if you are fimiliar with the way the speakers should sound. Good Luck!