No bass from STRDB1070

[Sienna]

Hi everyone, I am having trouble with the bass from my sub that is connected to my Sony STRDB1070. Bascially it's non existant!!
I have checked the set up and all speakers are set to "small" but I have to have the sub dial to almost max to get any sort of impact and even then it's not great... Is there any advice from 1070 owners out there!!! Am I missing something???
Thanks

Sienna

 

[Bristol Pete]

You have not told the amp there is a sub. In the same options menu where you set speaker sizes, scroll right and it will ask for sub woofer, tab yes or no. Also, have you connected it in the correct socket at the rear ??