number of amps?

currently i have two amps hooked up to my system, i have a 1600 watt 4 channel on my voice (front and rear)and a 1800 watt monoblock on my L7 (bass), my voice isnt as loud as i would like it to be, and i wanted to know if its better to get a stronger amp for my voice (front and rear), or should i switch the 1600 watt amp to my rear speakers (2 pairs of 6x9's), and get a 500 watt amp for my component set in front?

system details:

two pairs of pioneer 6x9's - Ts-A6993R with a peak of 920 per pair and rms 120

pioneer component set - TS-D1720C with a peak of 520 per set and rms 120

soundstorm f4400 4 ch amp - with a power rating of 160 rms per ch at 4 ohm and 400 max at 2 ohm

Kenwood KAC-9103D with a power rating at 900 rms at 2 ohm

i'm using 0 gauge main wire with a distribution block to 4 gauge

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Mastermindz

Have you tried turning the gain down on the bass amp?

I have the gain on my bass amp zeroed out, I have a clarion eqs746, could it be the eq not putting out enough to my voice amp? I feel as if the bass is overpowering my voice, but at the same time I don't want to sacrifice bass, so do I improve my amps or speakers? I'm pretty happy with the speakers i have right now, but not sure if I'm getting the max outta them?

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Mastermindz

Turn your woofers off, turn it up and notice if you can reach your desired listaning level without distortion?  If you can not, a bigger amp may be in order.