I just bought rgardipee's Kicker 08ZX700.5 5-channel amp (thanks for the great deal!) and I have a JL Audio M6600 6-channel coming. My plan is to run the six cabin speakers from the 6-channel JL and the four tower speakers and the sub from the 5 channel Kicker. My HU has two pairs of full range pre-outs plus one pair of sub preouts. So getting a signal to the sub is no problem. But how to I feed signal to the two multi-channel amps from just two sets of preouts? The JL will combine the signals from channels 1&2 and 3&4 for channel 5&6 so I just need two sets of pre-outs for it. And I will need two sets for channels 1 thru 4 on the Kicker.

Do I just use RCA "Y" splitters to split the signal? Does the signal voltage get split in half then? Although my pre-out signal is pretty decent at 4V, I don't like the thought of splitting them in half.

Short of buying two Clarion EQS746 EQ's, what are my options?