First, thanks to everyone for all of there suggestions and help.

I received the DC filter from Outlaw just 30 minutes ago. As you all probably know it was very easy to install. I did not waste a minute. I plugged the DC filter into the same outlet as the 7700 and plugged the 7700 into the filter. Held my breath before I turned everything on and there it was.....silence.

I am a happy camper.
I cannot say enough about Outlaws customer service and the help and support I received from Scott Jackson.
Thanks Jennifer for expediting the Filter so quickly.