Ok! That really cleared some of the stuff I was asking! I will try it out, I am not sure why it would 'time out' I wouldn't of thought it would. Strange... I would of thought the amp would just work as normal but without the sub woofer. If I had it on which I normally do, it has the lowest on the bass to begin with. So I guess I wouldn't need a huge resistor (Ill just turn the bass down when its off). One last question and that should have me sorted.
I have seen a video that I gentlemen did and simply measured the resistance with any normal volt meter. Someone said that this will give you an in accurate measurement. I guess Ill do the same and the values will either be 4 ohm or 8 ohm? Then Ill put the resistors in a configuration of series and parallel to get the desired 8 ohm and just monitor it for the time being.
Thank you for your reply, and ill look forward to seeing your next reply 
Thanks
Trevor Boultwood