Many thanks for your question and welcome to the community.
Is the Bass Module still connected to power whilst this "hum" noise is being produced?
Potentially this could be due to feedback, have you disconnect the Bass Module from the unit to see if the issue persists?
Leon_C - Community Support
Thank you for getting back to us Wagaman317.
If we were to unplug the cable going to the main console and just have the sub plugged into power, nothing else connected to it, do we still have the humming sound? This would let us know if it is a power issue in the bass module itself or caused by the connection the rest of the system. Also I'm guessing when the whole system is disconnected from the power we no longer experience the humming.
It is possible that it could be related to the power supply or a transformer, hopefully this troubleshooting will help us determine whether that is the case.
Let us know how you get on.
All the best.
Keith_L - Community Support -
Many thanks for testing this out for us.I would have to agree with you, it appears to be either the transformer causing the low hum. I'm afraid to fix this particular issue, the system would need to be taken apart and repaired. As you mentioned this will have a cost due to the age of the system, however if you do wish to continue with this, you can contact our Customer Support Team for further assistance.
If you select this link - Contact Us, you can select your region. Scroll to the bottom and select contact us which will provide you with their contact number.