yes they are single 4 ohm coils. Right now they are on 2 ohm.What kind of subs are those? I'm assuming they are single 4 ohm coils. If so, you CAN'T wire them to 4 ohm. You can only run 2 or 8 ohm loads.
See^^^^^^^^^^^^^^^^how much is it at 4 ohms? The pioneers are only single voice coil and it will be on 4 ohms unless i wire them together