HSU VTF-3HO AM radio hum

[mshantz]

I recently bought a HSU VTF-3HO subwoofer and I love it. However, it causes a high pitched hum on AM radio. The hum goes away only when the HSU is unplugged, turning it off is not sufficient. Any ideas on how to avoid this?

 

[Stripes]

Get shielded cable to prevent hum, it seems your cable or speaker wire you are using to connect the sub is getting frequency interference from the am signal, is there a station close to you?

 

[EJ1]

Might want to look into a ground loop isolator.

 

[sparky77]

If you only hear the hum/whining noise when listening to AM radio, try something like one of these on the power cords for your subwoofer and receiver. Most any electronics store should carry something similar.