Take one of your P3'* out of the box and look at the sticker on the magnet for the model number.

If the model number is;

P3D412 = DVC 4 ohms per coil

OR

P3D212 = DVC 2 ohms per coil

Here are the links for the 2 different P3'*

Click on the woofer wiring tabs on the bottom of these links, to see wiring config.

4 ohm DVC

http://www.rockfordfosgate.com/produ...n_US&p_status=
2 ohm DVC

http://www.rockfordfosgate.com/produ...n_US&p_status=
Is this the Amp your looking at buying ?

Click on the Specification tab at the bottom of the linked page.

http://www.rockfordfosgate.com/produ...n_US&p_status=
This amp can handle 1, 2 & 4 Ohm loads

The load on the amplifer is determined by how you wire your subs.

Think of it this way the amplifer has eye'* and can only see what ever resistance you show it by way of wiring your subs.

Less resistance = more power (unless you drop the load too low then you put the amp into protection ex. 0.5 ohm load)

Ex.

750 watts x 1 at 4 ohm

2000 watts x 1 at 1 ohm

Dutch