HI, yep tried the cone check with the finger and get nothing. With the gain do you mean Volume? Ive turned up the volume to 3/4 and turned up the frequency on the sub to 150, thats as far as it goes.
The cable is brand spanking new, so shouldnt be an issue, but will try my old red white cable that worked before just to make sure. ill be back in touch soon. cheers for responding.