Whenever i turn my car on I hear 2 big Boom's then my sub doesn't work after that.
I checked all the cables at the back and they seem to be plugged in Ok.
Does anyone have any idea what the issue could be?

I also noticed that the light on the AMP is red rather then blue (pretty sure it was blue before)

Picture:
https://dl.dropboxusercontent.com/u/47731225/sub.gif

Thanks in advance for any help!