Thanks for the replies guys. Yes the speakers are 8 ohms, it says so on the back. With this in mind, I have 4 cables in total coming from the speakers; can you explain how I would have to connect them to the 1/4" jack?
Also, can I get a 1/4" jack where you can just clip the speakers wires onto it instead of soldering them on? The wires connected to my speakers already are just clipped on and it's a lot easier than having to re-buy soldering equipment too.