Hi guys, I am wondering if I can full my amp (outlaw model 500) that the connected speakers are 4ohms insted of 8. I currently have polk RTI a7 with is 8 ohm speaker. The amp pumps much more power if connected to 4 ohm load. I think I saw a article or something that you can add resistor and make the load 4 insted of 8 ohms. Any ideas??