all the post above, if combined, provide the right info for you.

Let me just sum it up for you real quick in one post.

1. Wire each sub to it's own channel. This will be the 150wRMS @ 4Ohm x 2 setup.
2. Make sure that you turn ON the LPF (Low Pass Filter). If you DON'T, then you will destroy the woofers because the the full range of audible frequencies will be sent to the woofer.